ANNEXURE-XVIII PGCIL letter da - · PDF fileList of Annexure – Minutes of 26th ... Shri...

List of Annexure – Minutes of 26th

SRPC Meeting

ANNEXURES

ANNEXURE-I List of Participants.

ANNEXURE-II TANTRANSCO letter dated 29th

November 2014.

ANNEXURE-III KSEB letter dated 08th December 2014.

ANNEXRE-IV Chairperson, SRPC letter dated 25th September 2014

addressed to Secretary (Power), GoI regarding HVDC link

between Raigarh – Pugalur.

ANNEXURE-V Minutes of the 37th

Meeting of SCPSPSR.

ANNEXURE-VI PGCIL Agenda – Evacuation system for proposed Ultra

Mega Solar Park in Andhra Pradesh.

ANNEXURE-VII MoP letter dated 10th November 2014 – 50MW unallocated

power of second unit of KKNPP to Telangana.

ANNEXURE-VIII Chairperson, SRPC letter dated 01st August 2014 addressed

to Secretary (Power), GoI regarding Coal Stock Position

ANNEXURE-IX NTPC letter dated 25th November 2014.

ANNEXURE-X PGCIL letter dated 04th

December 2014.

ANNEXURE-XI SRPC letter dated 18th September 2014.

ANNEXURE-XII SRLDC letter dated 17th

December 2014.

ANNEXURE-XIII Updated status of visible relief.

ANNEXURE-XIV Chairperson, SRPC letter dated 07th August 2014.

List of Annexure – Minutes of 26th

SRPC Meeting

ANNEXURE-XV Status of data, voice, internet communication and pending

field input as discussed in the 101st Meeting of OCC.

ANNEXURE-XVI APTRANSCO letter dated 17th

December 2014.

ANNEXURE-XVII SRPC letter dated 26th September 2014.

ANNEXURE-XVIII PGCIL letter dated 20th

October 2014.

ANNEXURE-XIX Details of remedial measures etc. to be complied with in

accordance with the discussions in the Protection Sub-

Committee

ANNEXURE-XX KPTCL letter dated 06th

December 2014.

ANNEXURE-XXI TANTRANSCO letter dated 17th

December 2014.

ANNEXURE-XXII Caution / violation messages issued to the constituents by

SRLDC.

Annexure – I (Page 1of 3)

26TH

MEETING OF THE SOUTHERN REGIONAL POWER COMMITTEE

HELD AT VISAKHAPATNAM ON 20th

DECEMBER 2014

LIST OF PARTICIPANTS

MEMBERS

Shri G. Kumar Naik Chairperson, SRPC & MD, KPTCL, Bengaluru

Shri Mohd. Anwaruddin Director (Grid, Trans. & Mgmt. ), APTRANSCO, Hyderabad

Shri S. Sumanth Director (Transmission), KPTCL, Bengaluru

Shri G.Bhimsha Chief Engineer Electrical /SLDC, KPTCL, Bengaluru

Shri R.V.Sundararaman Managing Director, TANTRANSCO, Chennai

Shri P.Annadurai Director (Distribution), TANGEDCO, Chennai

Shri D.Prabhakar Rao CMD ,TSTRANSCO & MD, TSGENCO, Hyderabad

Shri T. Jagath Reddy Director (Trans.), TSTRANSCO, Hyderabad

Shri Subhash Muley Chief Executive Officer, NTECL, Vallur

Shri Satish Jindal Director & CEO (Trading), JSWEL, New Delhi

Shri R. P. Sasmal Director (O), PGCIL, Gurgaon, Haryana

Shri P.R.Raghuram Executive Director, POSOCO, SRLDC, Bengaluru

Shri S.R. Bhat Member Secretary, SRPC, Bengaluru

OTHERS

Andhra Pradesh Transmission Corporation Ltd.

Shri S. Subrahmanyam Director (Projects) Shri Ch. V. S. Subba Rao Superintending Engineer/PS

Andhra Pradesh Power Generation Corporation Ltd.

Shri K. Balaram Director (Thermal)

Shri M. P. Sunder Singh Chief Engineer

Shri Somasekhara Rao Divisional Engineer / Generation

Karnataka Power Transmission Corporation Ltd.

Shri D.Chetha Executive Engineer (E) Plg.

Shri M. Renu Prasad Executive Engineer (EA to Dir/Trans)

Shri J.Ramakantha Executive Engineer/SLDC

Ms. Divya Prabha H Assistant Executive Engineer / P&C

Power Company of Karnataka Ltd.

Shri M. G. Suresh Babu Additional Director (Projects)

Karnataka Power Corporation Ltd.

Shri H.A. Lakshminarsimha Chief Engineer Electrical I/c

Annexure-I (Page 2 of 3)

Kerala State Electricity Board Ltd.

Shri K. Venugopal Chief Engineer (Trans.) Ms. Vijaya Kumari P. Chief Engineer (Tr. & SO) Shri Austin D’Cruz Dy. Chief Engineer (Grid) Shri S.R. Anand Executive Engineer (LD)

Tamil Nadu Transmission Corporation Ltd.

Shri K. Rangaraj Director/Trans Projects

Shri C. Kalia Perumal Chief Engineer/Operation

Ms. J. Rexline Terese Superintending Engineer/D/P&C

Shri P.Raja Gunanidhi Executive Engineer/Coml.

Tamil Nadu Generation & Distribution Corporation Ltd.

Ms. K. Thenmozhi Exucutive Engineer/CERC

Shri R. Santhana Kumar Executive Engineer/System Studies

Telangana State Transmission Corporation Ltd.

Shri B. Vizian Kumar Chief Engineer (PS)

Shri D.R.Vishwanath Rao Superintending Engineer / Plg. & PS

Shri P.Suresh Babu DE/Plg./ SLDC

Shri H.T.Vivekananda DE/Commercial

Shri M. Seshagiri ADE/SS

Telangana State Generation Corporation Ltd.

Shri M. Sachidanandan Director (Thermal)

Telangana State Southern Distribution Company Ltd.

Shri M. Narasimhulu CGM/O&M

Shri Praveen Kumar Reddy Superintending Engineer

Electricity Department, Puducherry

Shri K. Mathivanan Superintending Engineer-I

Shri T. Chanemougam Executive Engineer/General

NTPC Limited

Shri R. Venkateswaran Regional Executive Director (SR)

Shri C. V. Anand GM (Comml), CC

Shri K. Sudarshan AGM (Comml.) I/c, SRHQ

Shri A. C. Sahoo AGM (O&M)

Shri Vinay Garg Sr. Manager (Comml.)

Neyveli Lignite Corporation Ltd.

Shri K.M. Suresh Babu Executive Director (Thermal) Shri S. Ravi Chief Manager/Plg./TPS-II

Annexure – I (Page 3 of 3)

Nuclear Power Corporation Ltd. Shri N.K. Jain Associate Director (Transmission) Shri K. P. Singh Chief Engineer

NTPC Tamilnadu Energy Company Ltd.

Shri K.M.K.Prusty AGM (Comml.)

JSW Energy Ltd.

Shri C.N.Singh Sr. V.P. & HoP

Udupi Power Corporation Ltd.

Shri Manish Tyagi Assistant Manager

Power Grid Corporation of India Ltd.

Shri V. Sekhar Executive Director, SRTS-I Shri Ravi Kumar Executive Director, SRTS-II Ms. Seema Gupta Chief Operating Officer (CTU-Plg.& CE) Shri R.N.Singh General Manager (O&M), SRTS-II Shri Kamal Sarkar General Manager (Operation)

Shri Kanilk Ram General Manager (O&M), SRTS-I

Shri Dilip Rozekar Deputy General Manager (CTU) Shri P. Ranga Rao Addl. General Manager (OS), SRTS-I

Ms. Susheela Devi Addl. General Manager (F&A), SRTS-I

Shri Thirumala Ready Asst. General Manager (O&S)

Shri P. Srinivas Chief Manager

Ms. P.Adilaksmi Manager (Law)

Power System Operation Corporation Ltd.

Shri S.P.Kumar Deputy General Manager, SRLDC Shri G. Madhukar Dy. Manager, SRLDC

GMR Energy Trading Ltd.

Shri Mohit Shinghal AVP (Trading)

Mahanadi Coalfields Ltd.

Shri Raghu Nandan General Manager (S & Mktg.)

Southern Regional Power Committee Secretariat

Shri Asit Singh Superintending Engineer Shri Meka Ramakrishna Executive Engineer Shri Anil Thomas Executive Engineer

Shri K.P.Madhu Executive Engineer

*****

Annexure-I(Page1of5)

IAnnexure-II


Annexure-II

Annexure-III(Page 1of15)

Annexure-III(Page 15of15)

Annexure-IIAnnexure-IV

Annexure –V

70 Pages (Minutes of 37th Meeting along with

Corrigendum of Standing Committee on Power System Planning of SR)

Annexure-III (Page1of64)

Annexure-V(Page 1 of 70)

Minutes of 37thMeeting of the Standing Committee on Power System Planning in Southern Region

Page��2�of�43�

3.��CEO,�POSOCO,��B�9,�Qutub�Institutional�Area,��Katwaria�Sarai,��New�Delhi�110016�

4.�The�Director�(Transmission),��Karnataka�State�Power�Trans.�Corp.Ltd.,��Cauvery�Bhawan,��Bangalore��560�009.��FAX�:��080��22228367�

5.The�Director�(Transmission),��Transmission�Corp.�of�Andhra�Pradesh�Ltd.,��(APTRANSCO)��Vidyut�Soudha,��Hyderabad�–�500�082.��FAX�:�040�66665137�

6.�The�Director��(Grid�Transmission�and�Management),��Transmission�Corp.�of�Telangana�Ltd.,��(TSTRANSCO)��Vidyut�Soudha,�Khairatabad��Hyderabad�–�500�082.��FAX�:�040�23321751�

7.�The�Member�(Transmission),��Kerala�State�Electricity�Board,��Vidyuthi�Bhawanam,�Pattom,��P.B.�No.�1028,��Thiruvananthapuram��695�004.��FAX�:�0471�2444738�

8.�Member�(Distribution),��Tamil�Nadu�electricity�Board�(TNEB),��6th�Floor,�Eastern�Wing,�800�Anna�Salai,��Chennai��600002.��FAX�:�044�28516362�

9.�The�Director�(Power),��Corporate�Office,�Block�–�I,��Neyveli�Lignite�Corp.�Ltd.,��Neyveli�,�Tamil�Nadu�–�607�801.��FAX�:�04142�252650�

10.�The�Superintending�Engineer�–I,��First�Floor,�Electricity�Department,��Gingy�Salai,��Puducherry�–�605�001.��FAX�:�0413�2334277/2331556�

11.�Director�(Projects),�National�Thermal�Power�Corp.�Ltd.�(NTPC),�NTPC�Bhawan,�Core�7,��Scope�Complex,�Lodhi�Road,��New�Delhi�110003.��FAX�011�24360912�

12.�Director�(Operations),��NPCIL,�12th�Floor,��Vikram�Sarabhai�Bhawan,��Anushakti�Nagar,��Mumbai�–�400�094.��FAX�:�022��25991258��

�

Copy�to:�

1.� The�Director�(Projects),�Power�Grid�Corp.�of�India�Ltd.�“Saudamini”,�Plot�No.2,�Sector�29,�Gurgaon�122�001,�Haryana.�FAX�:��95124�2571932�

2.� GM,�SRLDC,�29,�Race�Course�Cross�Road,�Bangalore�560�009�FAX�–�080�22268725��

�



�MINUTES�OF�MEETING�

�

Draft�Minutes�of�37th��Meeting�of�the�Standing�Committee�on�Power�System�Planning�in�

Southern�Region�(SCPSPSR)�held�on�31st�July�2014�at�NRPC,�Katwaria��Saria,�New�Delhi��

�

1. Introduction�

1.1 Member(PS)� welcomed� the� participants� and� said� that� number� of� changes� have�taken�place�since�the�last�meeting�held�in�September�2013�and�based�on�these�the�agenda� for� today’s� meeting� has� been� put� up� for� consideration� by� Standing�Committee.� He� mentioned� that� Ministry� of� Power� has� suggested� that� Standing�Committee�Meetings�should�be�called�on�quarterly�basis�to�address�various�issues�related� to�planning.�We�would�henceforth�need�to�convene�meetings�of�Standing�Committee�on�regular�basis.�He�also�informed�as�part�of�Prime�Minister’s�100�days�program,�20�year�perspective�plan�is�to�be�brought�out�by�CEA�in�association�with�CTU� and� POSOCO� Acommittee� for� developing� the� perspective� plan� for� � has� been�constituted.�and�would�bring�out�broad�transmission�corridors�for�the�country.�He�urged�participants�to�be�specific�while�presenting�their�views.�With�these�views�he�requested�Director�(SP&PA)�to�take�up�agenda�items.�

1.2 List�of�participants�is�given�at�Annex�I.�

1.3 These�Minutes�may�be�read�along�with�the�Agenda�circulated�for�this�meeting.�

�

2. Confirmation�of�the�minutes�of�36th�meeting�of�the�Standing�Committee��

2.1 Director(SP&PA),� CEA� stated� that� minutes� of� the� 36th� meeting� of� the� Standing�Committee�on�Power�System�Planning�of�Southern�Region�were�issued�vide.�CEA’s�letter� No.� 51/4/SP&PA�2013/1694�1704� dated� 27th� Sept,� 2014.� In� this� regard,�TANTRASNCO� has� given� observations� on� para� 21.0� –� “Contingency� Plan� for�evacuation� of� Power� from� ILFS”� as� per� which,� the� following� was� agreed� for�Contingency�Plan�for�evacuation�of�Power�from�ILFS�(2x600�MW):�

a) LILO� of� 2nd� circuit� of� Neyveli� –� Trichy� 400� kV� D/C� line� (LILO� of� 1st� circuit�already� under� implementation)� would� be� carried� out� at� Nagapattinum�pooling�station�as�contingency�plan,�by�CTU.��

b) Strengthening� of� Neyveli� TS�II� to� Neyveli� TS�I� expansion� link� with� higher�capacity�conductor�as�contingency�plan,�by�CTU.��

c) ILFS� would� be� allowed� to� evacuate� through� these� lines� only� if� there� are�margins�available�in�the�grid.��



2.2 TANTRANSCO� in� its� letter� stated� that� �� allowing� IL&FS� to� evacuate� the� power� by�making�LILO�of�both�lines�(i.e.,�NLC�TS2�–�Alundur�and�NLC�TS1�Exp�–�Alundur)�will�over� load�the�existing�400�kV�lines�at�Neyveli�complex.�Hence,� it� is�suggested�that�LILO�of�only�one�circuit�Neyveli�–�Trichy�400�kV�D/C�line�as�agreed�earlier�to�provide�start�up�power�to�the�plant�may�be�carried�out.�The�evacuation�system�for�the�ILFS�generation,�Nagapattinum�–�Salem�765�S/C� line�&�Salem�–�Madhugiri�765�S/c� line�may�be�speeded�up�to�evacuate�power�from�IL&FS.�

2.3 DGM(CTU)�stated�that�minutes�circulated�have�actually�recorded�what�was�agreed.�In� fact� based� on� these� decisions� POWERGRID� has� already� gone� ahead� towards�implementation� of� contingency� scheme.� Approval� of� MoP� in� this� regard� has� also�been�received.�Director,�CEA�proposed�that�observation�of�TNEB�can�be�recorded�but� without� altering� the� decision� taken� in� the� earlier� meeting� of� the� Standing�Committee,�which�was�agreed�by�TNEB�and��CTU.�

2.4 Director,� CEA� stated� that� the� minutes� of� joint� meeting� of� Standing� Committee� of�Power�System�Planning�of�Western�Region�and�Southern�Region�held�on�26th�Dec,�2013� to� discuss� –� (i)� Transmission�system� of� KPTCL� for� evacuation� of� power� from�Yermarus(2x800MW)� and� Edlapur(1x800� MW)� Thermal� Power� Generation� and� (ii)�GNA� concept� paper,� were� issued� vide� CEA’s� letter� No� 51/4/SP&PA2014/150�171�dated�21st�January,�2014.��

No�observations�were�received�on�the�circulated�minutes,�as�such�these�minutes,�as�circulated�were�confirmed.�

2.5 DGM(CTU)�further�pointed�out�a�typographical�error�in�the�point�16.3�(c)�of�issued�minutes�wherein�2x80�MVAR�switchable� line�reactors�at�Nellore�Poling�station�for�Nellore�(Pooling�station)�–�Gooty�400�kV�Quad�D/c�line�has�been�agreed�in�place�of�2x63�MVAR�switchable�line�reactors�for�controlling�high�voltages�at�Nellore.��

2.6 Accordingly,�the�minutes�of�36th�Standing�Committee�of�Power�System�Planning�of�,�as�circulated�were�confirmed�with�following�changes:�

Para�16.3�(�c�)�is�modified�as�below:�

2x63�MVAR�switchable�line�reactors�at�Nellore�Pooling�Station(PS)�for�Nellore�PS�–�Gooty�400�kV�Quad�D/c�line.�

�

Para�21.5�is�modified�as�below:�

ED(SRLDC),�POSOCO�said�that�Neyveli�–�S�P�Budur� line�always�remains�overloaded�and� allowing� ILFS� to� evacuate� the� power� would� further� increase� the� overloading.�Further�TANTRANSCO�stated�that�allowing�IL&FS�to�evacuate�the�power�by�making�



LILO�of�both�lines�(i.e.,�NLC�TS2�–�Alundur�and�NLC�TS1�Exp�–�Alundur)�will�over�load�the�existing�400�kV�lines�at�Neyveli�complex.�Hence,�it�is�suggested�that�LILO�of�only�one� circuit� Neyveli� –� Trichy� 400� kV� D/C� line� as� agreed� earlier� to� provide� start� up�power� to� the� plant� may� be� carried� out.� The� evacuation� system� for� the� ILFS�generation,�Nagapattinum�–�Salem�765kV�S/C�line�&�Salem�–�Madhugiri�765kV�S/c�line�may�be�speeded�up�to�evacuate�power�from�IL&FS.�

�

3. TANGEDCO/TANTRANSCO�proposals�

3.1 Director� (SP&�PA)�stated�that� joint�studies�were�carried�out�at�Gurgaon,�with�CEA�and�PGCIL�on�05�03�2014�to�07�03�2014�and�later�on�11�06�2014�in�Delhi,�to�finalize�the�Intra�State�transmission�system�proposed�by�TANTRASCO,�for�the�evacuation�of�4160MW�(State�sector�–�3440MW�+�OPG�Private�power�plant�–�720MW)�generation�in�Chennai�Area�and�2120�MW�generation�in�Udangudi�area.��

3.2 TANTRANSCO�stated�that�based�on�the�guidelines�given�by�CEA,�joint�studies�were�carried� out� and� following� transmission� system� has� been� evolved� to� evacuate� the�power� from� above� generation� projects� and� transmitting� to� load� centres� in� Tamil�Nadu:�

I. ATS�FOR�ETPS�EXPANSION�–�1X660MW:�

i) 400kV� DC� Quad� connectivity� from� ETPS� Expansion� switchyard� to� the�765/400kV�Pooling�station�at�North�Chennai.�(Generation�at�400kV�level)�

ii) 1X125�MVAR,420kV�Bus�Reactor�at�generation�switchyard.�

�

II. ATS�FOR�ENNORE�SEZ�(NCTPS�Stage�IV)�–�2X660MW:�

i) 400kV�DC�Quad�connectivity�from�Ennore�SEZ�switchyard�to�the�765/400kV�Pooling�station�at�North�Chennai.�(Generation�at�400kV�level)��

ii) �400kV� DC� Quad� inter� link� between� the� ETPS� Expansion� and� Ennore� SEZ�switchyard�for�reliability.�

iii) 2X125MVAR,�420kV�Bus�Reactors�at�generation�switchyard.�

�

III. ATS�FOR�NCTPS�Stage�III�–�1X800MW:��

i) 765kV� DC� line� from� NCTPS� Stage� III� switchyard� to� the� North� Chennai�Pooling�station.�(Generation�at�765kV�level)��

ii) 1X240MVAR,765kV�Bus�Reactor�at�generation�switchyard��



�

IV. ATS�FOR�ETPS�Replacement�–�1X660MW:��

i) 765kV� DC� line� from� ETPS� Replacement� switchyard� to� North� Chennai�Pooling�station.�(Generation�at�765kV�level)��

ii) 765kV�DC�inter�link�to�NCTPS�Stage�III�for�reliability.��

iii) 1X240MVAR,�765kV�Bus�Reactor�at�generation�switchyard.�

�

V. �ATS�for�M/S.OPG�Power�generation�Ltd.��2X360MW�:�(By�OPG)��

i) 400kV�DC�line�to�the�North�Chennai�Pooling�station.��

ii) 2X80�MVAR�,420kV�Bus�Reactor�at�the�generation�switchyard.��

�

3.3 Common�Transmission�system�for�above�generation�projects�in�Chennai�area:��

I. Establishment�of�765/400kV�Pooling�Station�in�North�Chennai�area:��

i) 3X1500MVA,�765/400kV�ICTs�at�North�Chennai�Pooling�station.��

ii) 765kV� DC� connectivity� from� North� Chennai� 765kV� pooling� station� to� the�proposed� Ariyalur� 765/400kV� SS� with� 240� MVAR,� 765kV� switchable� line�reactors� in�each� line�at� both�ends.�A� second�765kV�DC�connectivity� from�North�Chennai�765kV�pooling�station�to�the�proposed�Ariyalur�765/400kV�SS�may�be�reviewed�at�a�later�date�depending�upon�commissioning�of�the�projects.��

iii) 400kV� DC� line� from� North� Chennai� Pooling� station� to� the� proposed�Pulianthope�400/230kV�SS.��

iv) 500MVA,�400/400kV�Phase�Shifting�transformer(PST)�at�the�Pooling�station�to�control�the�power�flow�on�the�Pooling�station�–�Pulianthope�400KV�DC�line.��PST�to�have�the�capability�to�control�power�flow�in�both�the�direction�and�provision�to�be�made�to�bypass�PST�during�maintenance�if�required.��

�

II. Establishment�of�765/400kV�Sub�Station��in�Ariyalur�(near�Villupuram):��

i) 2X1500MVA,� 765/400kV� ICTs� with� the� following� 765kV� and� 400kV�connectivity.��



ii) 765kV� DC� connectivity� from� Ariyalur� 765/400kV� SS� to� the� Thiruvalam�PGCIL� 765/400kV� SS� with� 240� MVAR,� 765kV� switchable� line� reactors� in�each�line�at�both�ends.��

iii) LILO�of�both�the�circuits�of�Pugalur�–�Kalivantapattu�400kV�DC�Quad�line�at�Ariyalur.� (in� lieu� of� the� approved� connectivity� for� the� Singarapet�400/230kV� SS� which�has�been�approved� in� the�28th� Standing�Committee�meeting).��

iv) 2X240MVAR,� 765kV� Bus� Reactor� at� 765kV� bus� of� Ariyalur� 765/400kV� SS.�Provision� for� 420kV� bus� reactor� at� 400kV� bus� for� future� requirement� if�needed�depending�on�actual�field�condition.��

�

III. Establishment�of�765/400kV�SS�in�Coimbatore�Region��

i) 2X1500MVA,� 765/400kV� ICTs� with� the� following� 765kV� and� 400kV�connectivity.��

ii) 765kV� DC� connectivity� to� the� proposed� Ariyalur� 765/400kV� SS� with� 240�MVAR,�765kV�switchable�line�reactors�in�each�line�at�both�ends.�

iii) 400kV�DC�connectivity�to�the�sanctioned�Edayarpalayam�400/230KV�SS�

iv) 400KV�DC�connectivity�to�sanctioned�Rasipalayam�400/230KV�SS.�

v) 2X240�MVAR,�765kV�bus�Reactors�at�765kV�bus�of�Coimbatore�765/400kV�SS.�Provision�for�bus�reactor�at�400kV�bus�for�future�requirement�if�needed�depending�on�the�actual�field�condition.��

�

3.4 ATS�for�proposed�power�plants�at�Udangudi�(2x660�MW�+�1x�800MW)��

i) 400kV�DC�Quad�line�to�the�Kayathar�400kV�SS.��

ii) 400kV�DC�line�to�the�proposed�Samugarengapuram�400/230�110�kV�SS.�

iii) 400kV�Quad�DC�line�to�the�proposed�Ottapidaram�400/230�110KV�SS.��

iv) Ottapidaram� 400/230�110� KV� Substation� with� 2x� 315MVA,� 400/230kV� ICTs�and�2x200�MVA,�400/110kV�ICTs�with�the�following�400kV�connectivity.��

a. 400�KV�D/C�Quad�line�from�Udangudi�Switchyard.��

b. 400�KV�D/C�Quad�line�to�Kamuthi�400/230�110�KV�Substation.��

c. 230kV�connectivity:��

i. LILO�of�TSipcot�–�Kavanoor�230kV�SC�line�



ii. 230kV�DC�line�from�Indbharath�generation�switchyard�of�2x150�MW.��

iii. LILO�of�TSipcot�–�Savasapuram�230kV�SC�feeder.��

v) Kamuthi� 400/230�110� KV� Substation� for� Solar� Power� injection� (maximum�1000�MW)�with�3x�315MVA�400/230kV�ICTs�and�2x200�MVA,�400/110kV�ICTs�with� 400� KV� DC� Quad� line� from� Kamuthi� SS� to� the� existing� Karaikudi� 400kV�PGCIL�Substation.��This�S/S�would�have�following�230kV�connectivity:��

i. 230kV�DC�line�to�the�proposed�Muthuramalingapuram�230kV�SS.��

ii. 230kV�DC�line�to�the�existing�Kavanoor�230kV�SS.��

�

3.5 TANTRANSCO� has� proposed� to� establish� the� following� 400� KV� Substations� and�

transmission� lines� as� System� strengthening,� throughout� Tamil� Nadu� within� the�

end�of�13th�plan��

i) Samugarengapuram� 400/230�110� KV� wind� Substation� with� 2x� 315MVA,�400/230kV� ICTs�and�2x200�MVA,�400/110kV�ICTs�with�400�KV�D/C� line�from�Udangudi�Switchyard.�In�Aralvaimozhi�pass�wind�area�of�southern�part�of�TN,�the� existing� wind� capacity� is� 1800MW� and� there� is� no� 400kV� substation�available.� To� avoid� the� existing� congestion� and� to� accommodate� the� future�wind� addition� (maximum� 300� MW)� and� for� load� drawal� during� non� wind�season� Samugarengapuram� 400/230�110kV� SS� is� proposed.� The� following�230kV�connectivity�is�proposed:��

i. LILO�of�Kudankulam�–�SRPudur�230kV�SC�line��

ii. LILO�of�Udayathur�–�Sankaneri�230kV�SC�line��

iii.230kV�DC�line�to�proposed�Muppandal�230kV�SS.��

�

ii) Pudukottai� 400/230�110� KV� Substation� for� load� drawal� with� 2x� 315MVA,�400/230kV� ICTs� and� 2x200� MVA,� 400/110kV� ICTs� with� LILO� of� both� 400� KV�Karaikudi� –� Pugalur� TANTRANSCO� � DC� Quad� line.� The� following� 230kV�connectivity�is�proposed:�

i. 230kV�SC�line�to�Karambium�230kV�SS.��

ii. 230kV�SC�line�to�Pudukottai�230kV�SS.��

iii.230kV�SC�line�to�proposed�Tuvakudi�(BHEL)�230kV�SS.��

�



iii) Turaiyur�400/230�KV�Substation�for�load�drawal�with�2x�315MVA,�400/230kV�ICTs�with�LILO�of�one�of�the�NLC�–�Pugalur�400�KV�PGCIL�line,�and�400�KV�D/C�line�to�the�proposed�Mangalapuram�400�KV�Substation.�The�following�230kV�connectivity�is�proposed:��

i. 230kV�SC�line�to�Perambalur�230kV�SS.��

ii. 230kV�SC�line�to�Samayapuram�230kV�SS.��

iii.230kV�SC�line�to�sanctioned�Jambunathapuram�230kV�SS��

iv.230kV�SC�line�to�the�sanctioned�Poyyur�230kV�SS��

�

iv) Kolapalur��400/230�110�KV�Substation�with�2x�315MVA�400/230kV�ICTs�and�2x200�MVA,�400/110kV�ICTs�with�LILO�of�one�of�the�400�KV�MTPS�Stage�III��–�Karamadai�TANTRANSCO�line,�and�400�KV�D/C�line�from�Rasipalayam�400�KV�Substation.�The�following�230kV�connectivity�is�proposed:�

i. 230kV�SC�line�to�Thingalur�230kV�SS�

ii. 230kV�SC�line�to�Anthiyur�230kV�SS��

iii.230kV�SC�line�to�Shenbagapudur�230kV�SS� �

iv.LILO�of�Gobi�–�Pallakapalayam�230kV�feeder��

v. LILO�of�Karamadai�–�Ingur�230kV�line��

�

v) Mangalapuram� 400/230� KV� Substation� with� 2x� 315MVA,� 400/230kV� ICTs�with�LILO�of�both�the�Ariyalur�–�Pugalur�400�KV�D/C�Quad�line.�The�following�230kV�connectivity�is�proposed:�

i. LILO�of�Salem�–�Singapuram�

ii. LILO�of�Deviakurichi�–�Valayapatty�230kV�feeder.��

iii.230kV�SC�line�to�the�proposed�Thammampatty�230kV�SS�

iv.230kV�SC�line�to�the�proposed�Udayapatty�230kV�SS.��

�

vi) Sholingur�400/230�110�KV�Substation�with�2x�315MVA,�400/230kV�ICTs�and�2x200� MVA,� 400/110kV� ICTs� with� LILO� of� Sriperumbudur�� Tiruvalam� �� Kolar�400� KV� S/C� PGCIL� line.� (In� between� Sriperumbudur� and� Tiruvalam� 400� KV�Substation).�The�following�230kV�connectivity�is�proposed:��

i. LILO�of�Thiruvalam�–�Mosur�230kV�feeder��



ii. LILO�of�SVChatram�–�Arni�230kV�feeder��

iii.230kV�DC�line�to�the�proposed�Pattaraiperumbudur�230kV�SS.��

�

vii) Pulianthope� 400/230� KV� Substation� with� 3x� 315MVA,� 400/230kV� ICTs� with�400kV� DC� Quad� line� from� the� proposed� North� Chennai� Pooling� Station� and�400�kV�DC�line�from�Manali�400/230�110�KV�Substation.�The�following�230kV�connectivity�is�proposed:�

i. 230kv� SC� cable� link� to� Tondiarpet,� Basinbridge� and� sanctioned�Vysarpadi� &� CMRL� Central� 230kV� substations� which� are� under�execution.��

viii) Mylapore�400/230�KV�Substation�with�2x�315MVA,�400/230kV�ICTs�with�400�KV�SC�cable�from�proposed�Pulianthope�400/230�KV�Substation�and�400�KV�SC�cable� to� Guindy� 400� KV� Substation.� (Upgradation� of� existing� Mylapore�230/110kV�SS).��

ix) Palavadi� 400/230�110KV� Substation:� For� the� already� sanctioned� Singarapet�400KV� Substation,� the� land� has� now� been� identified� at� Palavadi� near� Salem�765/400�KV�PGCIL�Substation�with�400�KV�DC�quad� line�from�MTPS�Stage�III�and� 400KV� DC� quad� line� from� Tiruvalam� 400� KV� Substation� and� 400� quad�2XDC� line� from� Rasipalayam� 400� KV� Substation� (One� DC� line� via� Salem�765/400�KV�Substation).��The�following�230kV�connectivity�is�proposed:�

i. LILO�of�Karimangalam��MALCO�230kV�SC�line��

ii. 230kV�link�line�to�the�sanctioned�Gurubarahally�230kV�SS.��

iii. 230kV�DC�link�line�to�the�sanctioned�Udanapally�230kV�substation.��

x) Kayathar�–�Koilpatty�(Tuticorin�Pooling�point)�400kV�DC�Quad�line:��

i. Kayathar� –� Koilpatty� (Tuticorin� Pooling� point)� 400kV� DC� Quad� line� for�additional�connectivity�with�ISTS�and�increased�reliability�purpose��

xi) Pavoorchatram�400kV�SS�(Tennampatty�400kV�SS):��

For�the�Thenampatty�400/230�110kV�SS�which�has�been�approved�in�the�34th�Standing� committee� meeting,� now� the� land� has� been� identified� near�Pavoorchatram.� The� 400kV� connectivity� is� as� decided� in� the� 34th� Standing�committee� meeting� i.e.� 400kV� DC� line� to� Kayathar� 400kV� SS.� The� following�230kV�connectivity�is�proposed:�



i. LILO� of� Kodikurichi� –� Veeranam� 230kV� line� in� addition� to� the�connectivity�to�new�wind�substations.�

3.6 SRLDC� stated� that� there� is� need� to� clarify� that� system� strengthening� required� for�evacuation� of� power� from� generating� stations� is� necessarily� a� part� of�ATS(Associated� Transmission� System)� and� should� be� in� place� before� the�commissioning� of� generation� units.� In� the� absence� of� commissioning� of� entire�transmission�system�required�for�evacuation�of�power�from�generating�station�and�feeding�into�load�centres,�the�generation�leans�on�ISTS�and�leads�to�congestion�in�the�network.�He�also�emphasized�the�need�of�commissioning�of�associated�220kV�

lines� in� the� time� frame� of� 400kV� network� as� the� mismatch� in� commissioning� of�

these� elements� would� lead� to� congestion� and� TNEB� would� need� to� back� down�

their�generation�to�contain�loading.�These�provisions�were�agreed�by�TNEB.�

3.7 DGM(CTU)� agreed� with� SRLDC� view� and� stated� that� in� the� absence� of�commissioning� of� the� proposed� transmission� system,� generators� for� which�transmission�system�has�not�commissioned� � should�be�backed�down� first�and�the�access�of�other�generators�including�ISGS�generators�should�not�be�affected.�These�

provisions�were�also�agreed�by�TNEB.�

3.8 TNEB� stated� that� for� the� Udangudi� projects,� they� are� proposing� to� build� an�Udangudi� Pooling� Station� where� both� the� Stage�I� and� Stage�II� would� be� pooled�with�following�connectivity�lines:�

� �Connectivity�for�Udangudi�Power�Project�Stage�I�(2x660MW):�

i) 400kV�DC�Quad�line�to�the�Udangudi�Pooling�station.�

�� Connectivity�for�Udangudi�Power�Project�Stage�II�(1x800MW):�

i) 400kV�DC�Quad�line�to�the�Udangudi�Pooling�station.�ii) 400kV�DC�Quad�line�to�the�Udangudi�Power�Project�Stage��1��2x660MW�

� These� lines� and� the� Udangudi� Pooling� Station� would� be� in� addition� to� the� earlier�planned� system.� This� system� for� Udangudi� projects� was� agreed� provided� the�

Udangudi� Pooling� Station� is� commissioned� along� with� the� generation� project�

commissioned�first.�

�

3.9 Members�agreed�to�the�proposal�of�TANGEDCO�with�the�above�modifications�and�

the�provisions�as�mentioned�earlier.��

�

4. Constraints�in�400kV�bays�extensions�at�400kV�Vemagiri�S/S.��



4.1 �Director,�CEA�stated�that,�as�informed�by�APTRANSCO,�there�is�space�constraint�at�APTRANSCO’s�Vemagiri�400�kV�substation�and� it�would�be�difficult� to�provide�bay�extension�for�bringing�the�KV�Kota��Vemagiri�400�kV�DC�line�at�Vemagiri.�This� line�was� agreed� in� the� 36th� meeting� of� the� Standing� Committee,� as� part� of� the�transmission�system�for�evacuation�of�power�from�1040�MW�M/s�Hinduja�(HNPCL)�Power� Project.� APTRANSCO� had� proposed� to� remove� LILO� at� 400� kV� Vemagiri�Substation� and� make� through� one� circuit� of� 400� kV� Simhadri�II� –� Nunna� DC� line�(PGCIL)�LILOed�at�400kV�Vemagiri�SS.��

4.2 �He� said� that,� the� matter� was� discussed� with� APTRANSCO� and� PGCIL� and�accordingly,�a�rearrangement�of�Gazuwaka��Vijzywada/Nunna�was�proposed�in�the�Agenda,�as�depicted�below:��

�

�

4.3 �After�deliberation�following�was�agreed:�

i) LILO� of� both� circuits� of� Gazuwaka/Simhadri�II� –� Vemagiri(AP)� 400kV� D/C�line�at�Vemagiri�II.��

ii) Straighten�Nunna��Gazuwaka�400kV�D/C�line�(by�disconnecting�the�LILO�at��Vemagiri�I)�so�as�to�make�Nunna�–�Vemagriri�II�400�D/C�link��

iii) Use� one� LILO�D/C� portion� (of� Gazuwaka�Nunna� at� Vemagiri�I)� to� connect�� with� K.V.� Kota.� APTARNSCO� is� implementing� � KVKota�Vemagiri� 400� kV�� DC�line�agreed�36th�meeting.��

iv) Second�LILO�D/C�portion�to�be�extended�to�Vemagiri�II�(by�PGCIL)��

4.4 �APTRANSCO�informed�that�the�transmission�system�associated�with�evacuation�of�Hinduja�Power�Project�shall�be�completed�in�a�year.�SRLDC�stated�that�since�there�are�no�loads�at�Narsaraopeta,�the�combined�power�from�gas�generation�in�Vemagiri�area� and� Hinduja� units� may� be� reduced� so� as� to� limit� loading� on� Vizag� ��Narsaroapeta� transmission� lines� to� about� 700� MW.� This� is� necessary� to� allow�the�import�of�power�from�Gazuwaka�HVDC�b�t�b�to�allow�import�of�power�from�ER�to�



SR� through� the� Gazuwaka� HVDC� b�to�b� APTRANSCO� agreed� towards� limiting� the�generation�in�Vemagiri�and�Vizag�area�to�the�said�limits.�APTRANSCO�informed�that�as� a� new� capital� of� Andhra� Pradesh� is� being� envisaged� to� be� built� in� the�Narsaraopeta/�Vijayawada�area,�the�load�in�the�area�is�likely�to�increase.�

4.5 �KPTCL� asked� that� why� import� from� Gazuwaka� HVDC� b�t�b� is� being� curtailed� to�about�700�MW�instead�of�its�capacity�of�1000MW.�In�this�regard,�DGM(CTU)�stated�that� the� restriction� is� in� the� Eastern� Region� due� to� non�availability� of� Talcher�Behrampur�Gazuwaka�400�kV�lines�which�were�to�be�built�by�Reliance.�

4.6 �After�discussion�Members�agreed�to�the�proposal�of�rearrangement�for�Vemagiri�as�stated�above.�

�

5. System�for�increasing�capacity�of�Inter�State�Transmission�system�for�import� ��of�

power�into�SR�up�to�2018�19.��

5.1 Director,�CEA�stated�that�Southern�Region�is�facing�power�deficit�which�has�arisen�mainly� due� to� –� (i)� delay/deferment� of� anticipated� generation� projects,� for�example,� Krishnapattam� UMPP� (4000� MW),� Cheyyur� UMPP(4000� MW),� Udangudi�TPS,� IPP� projects� in� Nagapatanam/� Cuddalore� area� (3000� to� 4000� MW),�Kundankulam� APP� (2000� MW),� Kalpakkam� PFPR� (500� MW),� East� coast� project� in�Srikakulam�(1320�MW),�Gas�based�projects�in�Vemagiri�(about�3000�MW)�etc.�and�(ii)�also�due�to�non�availability�of�gas�for�existing�gas�projects�in�Southern�Region.�

�Some�of�the�constraints�in�import�of�power�into�Southern�Region�and�delivering�up�to� Kerala� and� Tamil� Nadu� has� also� been� due� to� long� delay� in� commissioning� of�important� 400� kV� transmission� lines,� for� example,� Mysore� �� Kozikode� 400� kV� D/C�line� (delayed� by� more� than� 7� years),� Tirunelveli�Edamon�Cochin� 400� kV� D/c� line�(delayed�by�about�4�years)�and�Narendera�Kolhapur�inter�regional�765�kV�D/C�line.�Some�constraints�have�also�been�caused�due�to�delay�in�the�transmission�systems�of� states,� for� example,� the� system� associated� with� Narsaropeta,� Vijaywada,�Hyderabad�&�Kakatiya�TPS�in�Andhra�Pradesh,�system�associated�with�Yermarus�TPS�and� non�finalisation� of� land� for� New� Narendera� in� Karnataka� and� transmission�system�for�wind�projects�and�North�Chennai�TPS�in�Tamil�Nadu.�

5.2 He�further� stated� that� joint� studies�were�carried�out�by�CTU�and�CEA�to� facilitate�import� of� 16000� MW� power� to� Southern� region� by� 2018�19� based� on� the�pessimistic� scenario� of� non�availability� /� delay� in� commissioning� of� some� of� the�generation� projects� in� Southern� region.� The� system� was� tested� for� contingencies�including�total�outage�of�an�entire�inter�regional�link�and�other�critical�regional�lines�for�reliability.�



5.3 Accordingly,�the�following�transmission�schemes�were�put�up�for�discussion�in�the�meeting:�

A. Scheme�I:�Additional� inter�Regional�AC� link� for� import� into�Southern�Region�

i.e.�Warora�Warangal��Hyderabad��Kurnool�765kV�link��

(i) ��Establishment�of�765/400kV�substations�at�Warangal�(New)�with�2x1500�MVA�transformer�and�2x240�MVAR�bus�reactors.��

(ii) Warora� Pool� �Warangal� (New)� 765� kV� D/c� line� with� 240� MVAR�switchable�line�reactor�at�both�ends.��

(iii) Warangal�(New)�–Hyderabad765�kV�D/c�line�with�330�MVAR�switchable�line�reactor�at�Warangal�end.��

(iv) Warangal�(New)�–�Warangal�(existing)�400�kV�(quad)�D/c�line.��

(v) Hyderabad–� Kurnool� 765� kV� D/c� line� with� 240� MVAR� switchable� line�reactor�at�Kurnool�end.��

(vi) Warangal� (New)� –� Chilakaluripeta� 765kV� D/c� line� with� 240� MVAR�switchable�line�reactor�at�both�ends.��

(vii) LILO�of�Kurnool�Thiruvelam�765�kV�D/c�at�Cuddapah�

(viii) Cuddapah��Hoodi�400kV�(quad)�D/c�line�with�63�MVAR�switchable�line�reactor�at�both�ends.��

�

B. Scheme�II:� HVDC� Bipole� link� between� Western� region� (Chhattisgarh)� and�

Southern�region��(Tamil�Nadu)��

(i) ��Raigarh(HVDC�Stn)�–�Pugalur�(HVDC�Stn)�6000�MW�HVDC�bipole�

(ii) Establishment� of� Raigarh� HVDC� Stn� and� Pugalur� HVDC� Stn� with� 6000�MW�HVDC�terminals�(with�alternate�of�having�3000�MW�in�first�phase)��

(iii) Raigarh�HVDC�Station� –�Raigarh(Existing)�400kV� (quad)�2xD/c� lines� (or�with�bay�extension)��

(iv) Pugalur�HVDC�Station�–�Pugalur�(Existing)�400kV�(quad)�D/c�line.��

(v) Pugalur� HVDC� Station� –� Arasur� 400kV� (quad)� D/c� line� with� 80� MVAR�switchable�line�reactor�at�Arasur�end.��

(vi) Pugalur� HVDC� Station� –� Thiruvalam� 400kV� (quad)� D/c� line� with� 80�MVAR�switchable�line�reactor�at�both�ends.��

(vii) Pugalur�HVDC�Station�–�Edayarpalayam�400�kV�(quad)�D/c�line�with�63�MVAR�switchable�line�reactor�at�Edayarpalayam�end.��



(viii) Edayarpalayam�–�Udumulpeta�400�kV�(quad)�D/c�line.��

(ix) Establishment�of�400/220kV�substation�with� 2x500�MVA�transformers�at�Edayarpalayam�and�2x125�MVAR�bus�reactors.��

�

C. Scheme�III:�Strengthening�of�transmission�system�beyond�Vemagiri�

(i) ��Vemagiri�II�–�Chilakaluripeta�765kV�D/c� line�with�240�MVAR�switchable�line�reactor�at�both�ends.��

(ii) Chilakaluripeta�–�Cuddapah�765kV�D/c�line�with�240�MVAR�switchable�line�reactor�at�both�ends.��

(iii) Chilakaluripeta�–�Podli�400kV�(quad)�D/c�line��

(iv) Chilakaluripeta�–�Narsaraopeta�400kV�(quad)�D/c�line��

(v) Cuddapah�–�Madhugiri�400kV�(quad)�D/c�line�with�80�MVAR�switchable�line�reactor�at�both�ends.��

(vi) Cuddapah�Hindupur� 400kV� (quad)� D/c� line� with� 80� MVAR� switchable�line�reactor�at�Hindupur�end.��

(vii) Srikaukulam�Pooling�Station�–�Garividi�400�kV� (Quad)�D/c� line�with�80�MVAR�switchable�line�reactor�at�Garividi�end.��

(viii) Establishment� of� 765/400kV� substations� at� Chilakaluripeta� and�Cuddapah� with� 2x1500� MVA� transformers� and� 2x240� MVAR� bus�reactors�each.��

(ix) Establishment� of� 400/220kV� substations� at� Podli� with� 2x315� MVA�transformers�and�2x125�MVAR�bus�reactors.��

�

5.4 APTRANSCO� informed� that� in� the� 36th� meeting� of� Standing� Committee� Podli�400/220�kV�substation�along�with�400�kV�D/c�line�between�Podli�and�Narsaraopeta�has� been� approved� as� APTRANSCO� scheme� therefore� this� substation� should� be�excluded� from� the� transmission� system� proposed� under� Scheme�III.� DGM(CTU)�stated� that� Podli� substation� and� Chilakaluripeta�Podli� and� Chilakaluripeta�Narsaraopeta� is� nothing� but� re�routing� of� earlier� proposed� Podli�Narsaraopeta.�These�elements�have�been�covered�under�Scheme�III�above�to�make�the�scheme�in�a� complete� manner� as� any� mismatch� in� construction� of� Chilakaluripeta�Podli� and�Chilakaluripeta�Narsaraopeta� shall� render� Vemagiri�Cuddapah� section� too� long�without� anchoring.� These� schemes� are� meant� for� delivery� of� power� in�Chilakaluripeta� area� as� APTRANSCO� is� facing� huge� deficit� of� power.� APTRANSCO�stated� that� they� have� already� acquired� land� in� Podli� area� and� extensive� work� is�



being�done�towards�construction�of�400/220�kV�substation� in�Podli.�Hence,� it�was�decided�that�item�no.�(iii)�and�(ix)�of�the�Scheme�III�shall�be�deleted�from�its�scope,�and� following� system� will� be� implemented� by� APTRANSCO,� as� decided� in� the� last�meeting.� �

5.5 System�strengthening�agreed�to�be�implemented�by�APTRANSCO�

1. Establishment�of�400/220kV�substations�at�Podli�with�2x315�MVA�transformers�and�2x125�MVAR�bus�reactors�

2. Narsaraopeta�–�Podili�400kV�D/c�line.�

5.6 TSTRANSCO� and� TANGEDCO� suggested� that� the� Raigarh�Pugalur� HVDC� may� be�implemented�by�POWERGRID�due�to�urgent�need�of�power�transfer�to�SR.�

5.7 Director,�CEA�opined�that�the�proposed�HVDC�may�be�planned�in�phases�with�3000�MW�in�the�first�phase�and�later�on�to�be�upgraded�by�another�3000�MW�module.�This�way�we�can�defer�Rs4000�5000�crores�of�investment.��

5.8 DGM�(CTU)�stated�that�the�experience�of� implementation�of�Champa�Kurukshetra�HVDC� line� in� two� phases� suggests� that� phase� wise� implementation� may� involve�number�of�issues�such�as�contractual�and�complexity�in�integration�of�two�modules�especially�when� these�are� supplied�by�different�manufacturers.�Further,� since� the�power� shortage� in� Southern� region� is� very� high� which� is� likely� to� remain� so� for� a�long�time�and�as�such�the�requirement�of�second�phase�may�be�envisaged�within�a�very� short� span�of� time,� it�may�be� implemented�as�6000�MW�capacity�HVDC� in�a�single�phase.��

5.9 In� this� regard,� KSEB� suggested� that� the� drawl� of� power� from� the� proposed� 6000�MW� HVDC� may� be� divided� with� 4000� MW� terminal� at� Pugalur� and� balance� 2000�MW�may�be�extended�to�Kerala�as�the�state�is�facing�acute�power�shortage.�

5.10 DGM(CTU),�PGCIL�said�that�this�shall�require�substantial�land�in�Kerala�area�where�land�acquisition�is�difficult.�Further�the�HVDC�for�such�a�small�distance�of�about�250�km� is� too� short� for� making� the� scheme� economically� viable.� He� suggested� that�looking� into� RoW� problems� in� Kerala� area� provision� of� VSC� based� underground�cables�can�be�explored.�

5.11 Director,�KSEB�explained�that�out�of�the�estimated�hydro�electric�potential�of�about�6000�MW�in�the�state,�Kerala�could�harness�only�about�2040�MW�so�far.�Further,�no�hydro� projects� with� storage� sufficient� to� provide� peak� support� during� summer� is�not�possible�due�to�environmental�concerns.�Hence,�to�meet�the�demand,�the�only�option� for� the� State� is� to� import� power� from� outside.� It� is� estimated� that� an�additional� import� capability� of� around� 2000� MW� by� year� 2018� and� 4000� MW� by�year�2022�will�become�quite�essential�for�meeting�the�forecasted�demand�of�about�



5000� MW� and� 6100� MW� respectively� (as� per� 18th� EPS)� for� the� time� frame� under�consideration.��

Regarding,� ROW� problem,� he� explained� that� the� possibility� of� getting� multiple�

corridors� across� the� Western� Ghats� is� also� rare� and� has� to� be� factored� in.�

Considering�these,�a�HVDC�line�can�be�an�ideal�technology�for�extending�the�ISTS�to�

Kerala.�He�proposed�that�2000�MW�can�be� located�at�Kerala�by�maintaining�4000�

MW�at�Pugalur�itself�as�planned�initially.�Accordingly,�the�same�+800�kV�HVDC�link�

can� be� extended� to� Kerala� with� one� Inverter� stations� of� 4000� MW� capacity� at�

Pugalur�and�second�of�2000�MW�capacity�at�Madakkathara,�Kerala.�This�would�also�

avoid� need� for� providing� ac� –� dc� conversion� twice.� Also,� this� arrangement� would�

reduce�the�requirement�of�765�kV�and�400�kV�AC�corridors�from�Pugalur�for�further�

dispersal�of�power�received�at�the�HVDC�Station.��

He� further� explained� that� for� the� evacuation� of� 2000� MW� power� minimum� of� 5�

number� of� 400� kV� lines� may� be� required� (Considering� the� N�1� condition).� 400� kV�

substation,� Madakkathara� (Trichur� North)� is� connected� to� Palakkad� (Udumalpet)�

and�Kochi�through�400�kV�D/c�corridors.�A�400�kV�D/c�line�is�also�planned�towards�

Areakode� and� is� expected� to� be� taken� up� using� the� RoW� of� the� Madakkathara� –�

Areakode� 220� kV� S/c� as� soon� as� the� 400� kV� Mysore� –� Areakode� D/c� line� is�

commissioned.�The� link� is�already�approved� in�the�Standing�Committee� for�Power�

System� Planning� of� Southern� Region.� Thus,� the� following� six� 400� kV� lines� will� be�

available�at�400�kV�S/s�Madakkathara�S/S:�

� Madakkathara�–�Palakkad�D/c�–�Existing�� Madakkathara�–�Cochin�D/c�–�Existing�� Madakkathara� –� Areakode� –� Mylatty� –� Uduppi� D/c� –� Planned� for�

evacuation.�Accordingly,� the� additional� works� required� for� evacuation� of� 2000� MW� is� thus�

minimal�at�Madakkathara.�

The� land� requirement� is� expected� to� be� around� 80� acres� since� the� 400� kV� yard�

already� exists� and� only�extension� is� required.� The� land� is� available� for�acquisition�

and�may�be�possible�without�much�difficulty.�The� line�construction� in�the�eastern�

part� of� Madakkathara� up� to� Kerala� border� is� also� possible� with� minimum� RoW�

issues.��

5.12 Based�on�the�above�discussions,�it�was�agreed�to�have�a�6000�MW�HVDC�link�from�Raigarh,� Chhatisgarh� to� Southern� Region.� Regarding� building� this� link� as� a� multi�terminal� HVDC,� with� one� Inverter� station� of� 4000� MW� at� Pugalur� and� another�



Inverter� station� of� 2000� MW� capacity� at� Madakkathara� in� Kerala,� it� was� decided�that�the�same�would�be�explored�and�finalized�in�next��meeting�of�SCPSP.��

5.13 POSOCO�enquired�about�the�need�of�PST�to�increase�the�flow�on�Sholapur��Raichur�line�in�the�light�of�the�fact�that�the�Aurangabad��Sholapur�line�has�been�planned�for�the�same�purpose�very�recently.�CTU�stated�that�the�flow�on�the�Raichur��Sholapur�line� is� only� 565� MW� without� Phase� shifting� transformer� and� to� achieve� some�control�of�power�on�the�AC�network�Phase�Shifting�Transformer�(PST)�of�3000�MVA�(2x1500� MVA)� at� Sholapur� is� proposed.� He� stated� that� the� loading� on� Raichur�Sholapur�line�improves�considerably�with�the�provision�of�PST.�

5.14 After�discussions,�the�following�transmission�system�was�agreed�for�the�three�ISTS�schemes:�

A) Scheme�I:� Additional� inter�Regional� AC� link� for� import� into� Southern�

Region�i.e.�Warora�–�Warangal�and�Chilakaluripeta��Hyderabad��

Kurnool�765kV�link��

(i) Establishment� of� 765/400kV� substations� at� Warangal� (New)� with�2x1500�MVA�transformer�and�2x240�MVAR�bus�reactors.��

(ii) Warora� Pool� �Warangal� (New)� 765� kV� D/c� line� with� 240� MVAR�switchable�line�reactor�at�both�ends.��

(iii) Warangal� (New)� –� Hyderabad765� kV� D/c� line� with� 330� MVAR�switchable�line�reactor�at�Warangal�end.��

(iv) Warangal�(New)�–�Warangal�(existing)�400�kV�(quad)�D/c�line.��

(v) Hyderabad–� Kurnool� 765� kV� D/c� line� with� 240� MVAR� switchable� line�reactor�at�Kurnool�end.��

(vi) Warangal� (New)� –� Chilakaluripeta� 765kV� D/c� line� with� 240� MVAR�switchable�line�reactor�at�both�ends.��

(vii) LILO�of�Kurnool�Thiruvalam�765�kV�D/c�at�Cuddapah�

(viii) Cuddapah��Hoodi�400kV�(quad)�D/c�line�with�63�MVAR�switchable�line�reactor�at�both�ends.��

�

B) Scheme�II:� HVDC� Bipole� link� between� Western� region� (Raigarh,�

Chhattisgarh)�and�Southern�region��(Pugalur,�Tamil�Nadu)��

(i) Raigarh(HVDC�Stn)�–�Pugalur�(HVDC�Stn)�6000�MW�HVDC�bipole�

(ii) Establishment�of�Raigarh�HVDC�Stn�with�6000�MW�HVDC�terminals��



(iii) Establishment� of� Pugalur� HVDC� Stn� with� 6000� MW� HVDC� terminals��(or�Alternatively:� (i)�with�Pugalur�HVDC�Stn�with�4000�MW�terminal,�and�(ii)�Madakkathara,�in�Kerala�HVDC�Stn�with�2000�MW�terminal�and�inter�connection�with�existing�400kV�AC�S/S�at�Madakkathara)��

(iv) Raigarh�HVDC�Station�–�Raigarh(Existing)�400kV�(quad)�2xD/c�lines�(or�with�bay�extension)��

(v) Pugalur�HVDC�Station�–�Pugalur�(Existing)�400kV�(quad)�D/c�line.��

(vi) Pugalur� HVDC� Station� –� Arasur� 400kV� (quad)� D/c� line� with� 80� MVAR�switchable�line�reactor�at�Arasur�end.��

(vii) Pugalur� HVDC� Station� –� Thiruvalam� 400kV� (quad)� D/c� line� with� 80�MVAR�switchable�line�reactor�at�both�ends.��

(viii) Pugalur�HVDC�Station�–�Edayarpalayam�400�kV�(quad)�D/c�line�with�63�MVAR�switchable�line�reactor�at�Edayarpalayam�end.��

(ix) Edayarpalayam�–�Udumalpet�400�kV�(quad)�D/c�line.��

(x) Establishment�of�400/220kV�substation�with�2x500�MVA�transformers�at�Edayarpalayam�and�2x125�MVAR�bus�reactors.��

�

C) Scheme�III:� Strengthening�of�transmission�system�in�Southern�region�beyond�

Vemagiri�

(i) Vemagiri�II�–�Chilakaluripeta�765kV�D/c�line�with�240�MVAR�switchable�line�reactor�at�both�ends.��

(ii) Chilakaluripeta�–�Cuddapah�765kV�D/c�line�with�240�MVAR�switchable�line�reactor�at�both�ends.��

(iii) Chilakaluripeta�–�Narsaraopeta�400kV�(quad)�D/c�line��

(iv) Cuddapah� –� Madhugiri� 400kV� (quad)� D/c� line� with� 80� MVAR�switchable�line�reactor�at�both�ends.��

(v) Cuddapah�Hindupur� 400kV� (quad)� D/c� line� with� 80� MVAR� switchable�line�reactor�at�Hindupur�end.(to�be�implemented�by�APTRANSCO)��

(vi) Srikaukulam�Pooling�Station�–�Garividi�400�kV�(Quad)�D/c�line�with�80�MVAR�switchable�line�reactor�at�Garividi�end.��

(vii) Establishment� of� 765/400kV� substations� at� Chilakaluripeta� and�Cuddapah� with� 2x1500� MVA� transformers� and� 2x240� MVAR� bus�reactors�each.��



�

5.15 Augmentation� of� Transformer� Capacities� in� SR:� Director,� CEA� stated� that�transformer� augmentation� may� be� needed� at� a� number� of� 400kV� Substations� in�Southern�Region�and�since�this�exercise�requires�further�detailing�the�same�shall�be�taken�up�in�the�next�standing�committee�meeting.�

5.16 Short�circuit� levels�at�400kV�and�765kV�nodes� in�SR:�Director,�CEA�said�that�while�carrying�out�the�studies�for�2018�19,�considering�the�system�proposed�above,�it�has�been� observed� that� the� maximum� fault� level� at� existing,� planned� and� proposed�400kV,�765�kV�buses�is�as�given�in�Annex�4.1�of�the�Agenda.�To�mitigate�anticipated�high� fault� level� at� these� buses,� detailed� analysis� of� above� factors� are� required�considering�options� like� series� reactor,� reconfiguration� (splitting� buses)� etc� and� is�proposed� to� be� taken� up� in� a� subsequent� meeting� of� the� Standing� Committee.�During�discussions,� it�was�observed�that�the�fault� levels�given� in�the�Agenda�note�had� some� discrepancies,� i.e.� the� difference� between� SLG� and� three�phase�to�ground� fault� levels�were�observed�to�be�high�at� some�nodes.� It�was�decided� that�the�same�would�be�looked�into�by�CTU�and�correct�values�would�be�enclosed�along�with�the�Minutes,�the�same�are�given�at�Annex�II.��

�

6. Dedicated� power� supply� to� Pumping� Stations� at� Myadaram,� Choppadandi,�

Ramadugu,�Malakpet�

6.1 Director,� CEA� stated� that,� as� per� TSTRANSCO,� a� number� of� pumping� stations� are�coming�up�in�Karimanagar�district�under�the�Dr.B.R.Ambedkar�Pranahitha�Chevella�Sujala�Project�lift�scheme.�TSTRANSCO(Transmission�company�of�Telangana)��made�a�presentation�(copy�given�at�Annex�III)�on�the�transmission�scheme�for�extension�of�supply�to�the�packages�of�the�Irrigation�Scheme.�

6.2 TSTRANSCO�informed�that�this�project�is�designed�to�utilize�160�tmcft�of�Pranahita�water�and�serve�16.4�lakh�acres�in�the�water�scarcity�areas�of�Adilabad,�Karimnagar,�Warangal,�Nizamabad,�Nalgonda,�Medak�and�Ranga�Reddy�districts.�The�water�from�this� Pranahitha� barrage� will� be� transferred� into� the� reservoir� of� the� Yellampalli�project� already� constructed� across� the� Godavari,� before� being� released� to� the�intended� areas,� including� Hyderabad� city� (30� tmcft)� for� drinking� purpose.�TSTRANSCO� informed� that� motors� would� be� synchronous� motors� to� pump� with�average�530�meters�average�pumping�head.�These�alternating�current�motors�will�run�between�0.95�pf�lead�or�lag.�The�packages�under�this�project�are:�

1. Package�6,� Myadaram,� Karimnagar� District:� Voltage� rating� is� 13.8� kV� with� 6�pumps�with�the�total�power�requirement�of�750�MW.��



2. Package�7,�Choppadandi,�Karimnagar�District:�Voltage�rating� is�11�kV�with�3�pumps�with�the�total�power�requirement�of�123�MW.��

3. Package�8,� Ramadugu,� Karimnagar� District:� Voltage� rating� is� 13.8� kV� with� 5�pumps��with�the�total�power�requirement�of�670�MW.�

4. Package�9,�Malakpet,�Karimnagar�District:�Power�requirement�of�30�MW.�

5. Package�10,� Tippapur,� Karimnagar� District:� voltage� rating� is� 13.8� kV� with��pumps�with�the�total�power�requirement�of�336�MW.�

6.3 The�transmission�system�proposed�by�TSTRANSCO�included�the�following:�

a) Erection�of�400kV�S/S�at�Ramadugu�(Pkg�8).��

b) Erection�of�400kV�S/S�at�Choppadandi�(Pkg�7)�with�2x315�MVA�ICTs.��

c) Erection�of�400kV�S/S�at�Myadaram�(Pkg�6)��

d) Erection�of�400kV�S/S�at�Tippapur�(Pkg�10)��

e) Erection�of�a�132kV�S/S�at�Malakpet�(Pkg�9)��

f) Erection�of�400kV�Quad�Moose�DC�line�for�making�LILO�of�both�the�circuits�of� � 400kV� SCCL� –� Gajwel� Quad� Moose� DC� Line� at� the� proposed� 400kV�Ramadugu�SS�(total�50kM�for�two�LILO�DC�lines).��

g) Erection�of�90kM�400kV�Twin�Moose�DC�line�from�400kV�Dichpally�SS�to�the�proposed�400kV�Ramadugu�SS.��

h) Erection�of�25kM�400kV�Quad�Moose�DC� line�from�400kV�Ramadugu�SS� to�400kV�Myadaram�SS.��

i) Erection�of�25kM�400kV�Quad�Moose�DC� line�from�400kV�Ramadugu�SS� to�400kV�Choppadandi�SS.��

j) Erection�of�40kM�400kV�Twin�Moose�DC�line�from�400kV�Choppadandi�SS�to�400kV�Tippapur�SS.��

k) Erection�of�400kV�Twin�Moose�DC�line�for�making�LILO�of�both�the�circuits�of��400kV�KTPP�–�Gajwel�Twin�Moose�DC�Line�at�the�proposed�400kV�Tippapur�SS�(total�80kM�for�two�LILO�DC�lines).��

l) Erection�of�60kM�400kV�Twin�Moose�DC�line�from�400kV�Dichpally�SS�to�the�upcoming�400kV�Nirmal�SS.�

m) Erection� of� 30kM� 132kV� DC� line� from� 220kV� Jagityala� SS� to� the� proposed�132kV�Malakpet�SS.��

�



6.4 SRLDC� stated� that� since� these� are� seasonal� pumps,� there� may� be� requirement� of�provision� of� reactors� to� prevent� high� voltages� in� non�operational� season.� SRLDC�also� asked� about� requirement� of� start�up� power.� TSTRANSCO� agreed� to� provide�

sufficient�reactors�under�this�scheme.�

6.5 It�was�also�agreed�that�TSTRANSCO�shall�supply�technical�details�related�to�start�up�scheme� of� these� motors.� The� start�up� schemes� details,� sent� later� on� by�TSTRANSCO,�are�given�at�Annex�IV.��

6.6 It�was�also�pointed�out�that�the�transformation�capacities�at�the�400kV�and�220kV�S/S� proposed� under� the� scheme� was� not� indicated� in� the� agenda/TSTRANSCO�scheme�proposal.�TSTRANSCO�agreed�to�furnish�the�same�to�CEA.�

6.7 After�discussions�the�above�scheme�was�agreed.�TSTRANSCO�to�provide�technical�details�as�mentioned�above.�

�

7. 400kV� Bays� in� Dharmapuri� (Salem)� 765/400kV� SS� for� terminating� 400kV� DC� line�

from�Rasipalayam�400kV�SS:��

7.1 Director,�CEA�stated�that�LILO�of�one�circuit�of�Rasipalayam��Singarapet�400kV�D/c�line� at� Salem� 765/400kV� (POWERGRID)� substation� was� agreed� for� evacuation� of�wind� power� projects� in� Tamil� Nadu.� PGCIL� has� informed� that� at� present� all� the�400kV�bays�are�allocated�and�there�are�no�bays�available�at�Dharmapuri�substation�for�termination�of�above� line.�However,�at�a� later�stage�when�the�system�shall�be�operated�at�its�rated�765kV�level,�400kV�bays�will�get�released.��

7.2 �TNEB�requested�to�allow�inter�connection�at�the�designated�400kV�bays�meant�for�termination� of� 765/400� kV� transformers.� POWERGRID� stated� that� at� a� later� date�when� an� up�gradation�work� will� be� taken� up,� this� interconnection� would� become�constraint�in�construction�work;�therefore,�it�would�not�be�feasible�to�terminate�the�said� line� at� Salem� 765/400� kV� substation.� SLD� for� Dharmapuri(Salem)� PS,� as�

requested�by�TNEB,�is�given�at�Annex�V.�

7.3 Director,� CEA�stressed�upon� the�need�of�operating�Tuticorin��Salem� line�at�765kV�level�in�view�of�number�of�LTA�applications�are�there�for�that�region.�PGCIL�agreed�

to�study�and�bring�the�matter�in�the�next�meeting�of�Standing�Committee.��

�

8. Transmission� System� for� evacuation� of� power� from� 2x500� MW� Neyveli� Lignite�

Corp.�Ltd.�TS�I�(Replacement)�(NNTPS)�in�Neyveli,�Tamil�Nadu:��

8.1 Director,� CEA� stated� that� the� transmission� system� as� agreed� in� 35th� SCM� for�evacuation� of� power� from� 2x500� MW� Neyveli� Lignite� Corporation� Ltd.� TS�I�



(Replacement)� (NNTPS)� in� Neyveli,� Tamil� Nadu,� remains� same� except� for� minor�modification�in�terms�of�type�of�conductor�of�Neyveli�TPS�II��Neyveli(TANTRANSCO�230kV� S/S),� 230kV� D/C� line� (by� TNEB)� which� shall� also� be� with� HTLS� conductor.�Accordingly,� it� is�clarified�that�the�following�would�be�under�the�scope�of� �System�Strengthening�in�Tamil�Nadu:�

(i)� Establishment� of� new� 230/110kV,� 3x160� MVA� or� 4x100� MVA� S/S� at�Neyveli�(TANTRANSCO�230kV�S/S)�(by�TNEB)�

(ii)� Shifting� of� the� 230kV� (3� nos)� and� 110kV(7� nos)� lines� owned� by� TNEB�emanating�from�the�existing�Neyveli�TS�I�switchyard�to�Neyveli�230kV�S/S�(by�TNEB)�

(iii)� LILO� of� both� circuits� of� Neyveli� TS�I� –� Neyveli� TS�II� 230kV� D/c� line� at�NNTPS�Switchyard�(by�NLC)�

(iv)� NNTPS� switchyard� –� Neyveli(TANTRANSCO� 230kV� S/S),� 230kV� D/C� line�with�HTLS�conductor�(by�TNEB)�

(v)� Neyveli� TPS�II� �� Neyveli(TANTRANSCO� 230kV� S/S),� 230kV� D/C� line� (by�TNEB)�also�be�with�HTLS�conductor�

8.2 TNEB�stated�that�a�400/220�kV�substation�now�envisaged�at�Ariyalur�is�in�the�same�vicinity�as�that�of�Ginjee�which�was�covered�under�the�NNTPS�transmission�system.�Therefore,� the� scheme� shall� be� required� to� be� modified� for� exclusion� of� Ginjee�substation� and� termination� of� NNTPS� evacuation� line� at� Ariyalur� substation.�DGM(CTU)� stated� that� the� scheme� for� NNTPS� has� already� been� notified� for�implementation� under� TBCB� and� such� � modification� may� cause� the�scheme� to� be�notified�again.��

8.3 Director,�CEA�was�of�the�view�that�constructing�two�400�kV�substations�in�the�same�area�is�not�required.�The�requirement�of�NNTPS�was�enquired�from�representative�of�NLC,�who�confirmed�that�unit� I�and� II�would�be�commissioned�in�Oct�2017�and�April�2018�respectively.�

8.4 After�discussions,�it�was�decided�that�regarding�the�following�system�for�evacuation�of� power� from� 2x500� MW� Neyveli� Lignite� Corporation� Ltd.� TS�I� (Replacement)�(NNTPS)� in�Neyveli,�Tamil�Nadu�under�“Transmission�System�for�LTA�(as�an�ISTS)”,�shall� be� modified� as� under� and� shall� be� again� taken� up� in� the� Empowered�committee.��

(i)��NNTPS�switchyard�–�Ariyalur�(Villupuram)�400kV�D/c�line�

8.5 The� Ariyalur� (Villupuram)� 400kV� S/S� 2x500� MVA� S/S� would� be� implemented� by�TANTRANSCO,�along�with�the�bays�for�termination�of�line�from�NNTPS�at�Ariyalur.�



8.6 It� was� also� decided� that� TANTRANSCO� shall� submit� documents/letter� related� to�acquisition�of�land�at�Ariyalur�and�schedule�of�Ariyalur�S/S.�TANTRANSCO�agreed�to�give� in�writing�that� they�would�allow�line�from�NNTPS�switchyard�to�be�bussed�at�their� Ariyalur� (Villupuram)� 400kV� S/S.� A� copy� of� letter,� submitted� by� TNEB� after�

the�meeting,�is�given�at�Annex�VI.�

8.7 It� was� also� decided� that� NLC� will� furnish� a� letter� indicating� the� generation�

schedule�of�the�units.�

�

9. Connectivity� for� Kudankulam� 3&4� (2x1000MW)� with� interstate� transmission�

system.��

9.1 Director,� CEA� informed� that� the� following� connectivity� arrangement� for� the�Kudankulam�units�was�agreed�in�the�36th�Standing�Committee�meeting�:�

i) Interim�Arrangement� for�Units�1� &�2:�One�400� kV�circuit� from�Kudankulam�and�one�400kV�circuit�from�Madurai�are�terminating�in�the�same�diameter�at�Tirunelveli�substation�and�therefore,�through�opening�of�two�main�breakers�&�keeping� tie�breaker� in�closed�position� in�normal�condition,� shall�provide� the�required�bypass�arrangement�

ii) Tuticorin�Pooling�station�–�Tirunelveli�section�of�the�agreed�Tuticorin�Pooling�station�� Kudankulam� 400� kV� Quad� D/c� line� to� be� constructed� ahead� of�Kudankulam�–�3�&�4�and�one�of�the�existing�Kudankulam�–�Tirunelveli�400�kV�Quad� D/c� may� be� connected� to� the� same� making� Kudnakulam� –Tuticorin�Pooling�station�400kV�Quad�D/c�line�.�

9.2 NPCIL� made� a� presentation� (given� at� Annex�VII)� regarding� the� proposed� system.�NPCIL�stated�that�the�present�arrangement�for�evacuation�of�power�from�Unit�I�and�II� i.e.,� one� of� the� 4� circuits� to� Tirunelveli� extended� up� to� Madurai,� bypassing� the�Tirunelveli�Sub�Station� is�a� temporary�measure.� In� the�event�of�non�availability�of�400�kV�Tirunelveli�S/s,�a�SPS�is�under�implementation�to�regulate�the�generation�of�KKNPP�1&2�to�700�MW�within�10�15�minutes,�so�as�to�match�it�with�the�capacity�of�the�only�available�line�to�Madurai.�He�further�added�that�in�the�eventuality�of�fault�at�Tirunelveli�substation�only�one�circuit�to�Madurai�is�left�for�evacuation�of�power�from�Unit�1�&�2�which�may�also�be�lost�due�to�tripping�on�account�of�power�swings�as�has�happened�in�many�instances�in�the�nation�at�other�locations.�With�respect�to�the�rearrangement�proposed� for�Unit�3�&�4� i.e.,�one�additional�400kV�D/C� line� to�Tuticorin�Pooling�Station,�one�circuit�of�this�D/C�line�to�be�connected�to�KKNPP�1&2�and�the�other�to�KKNPP�3&4.�Similarly,�one�circuit�of�each�of�the�existing�2x400kV�D/c�lines�(to�Tirunelveli)�also�to�be�connected�to�KKNPP�1&2�and�KKNPP�3&4,�NPCIL�



opined�that�under�outage�of�two�towers�of�each�circuit�of�Kudankulam��Tirunelveli�D/c�line,�only�one�line�shall�be�available�for�evacuation�of�power��Unit�3�&�4.�Based�on� the� above� observations� NPCIL� proposed� to� review� the� scheme� and� plan�additional�lines�for�safe�evacuation�of�power�from�Kudankulam�Units.�

9.3 Regarding� implementation� of� the� Tuticorin� PS� �� Tirunelveli� 400kV� D/c� line,� which�was�agreed�in�the�36th�Standing�Committee�meeting,�for�evacuation�of�power�from�KKNP,� it� was� informed� that� the� same� shall� be� taken� in� the� next� meeting� of� the�Empowered�Committee.�

9.4 After�discussions�it�was�agreed�that�studies�shall�be�carried�out�for�requirement�of�additional� evacuation� lines� for� KKNP� Unit�3� &� 4.� Meanwhile,� the� earlier� agreed�scheme�may�be�taken�up�for�implementation.��

�

10. Requirement�of�Additional�125�MVAR�Bus�Reactor�at�Kaiga�

10.1 Director,� CEA� stated� that� during� the� 36th� meeting� of� the� SCPSPSR� it� was� agreed�that�NPCIL�would�explore�the�possibility�to�provide�additional�reactor�of�125�MVAR�at� Kaiga� or� replace� the� 63� MVAR� with� 125MVAR.� NPCIL� stated� that� as� per� the�capability� curve� the� machines� could� not� absorb� reactive� power� beyond� margins�stated� in� the� planning� criteria� to� control� high� voltages� at� Kaiga.� SRPC� stated� that�capability�curve�supplied�by�NPCIL�is�different�from�those�given�earlier.�

10.2 Director,� CEA� clarified� that� margins� specified� in� the� planning� criteria� are� kept� for�planning�stage�and�these�may�be�used�by�operator�to�control�voltages�in�real�time�operation� and� as� such� NPCIL� should� either� absorb� requisite� MVAR� or� provide�suggested�reactors�to�control�the�voltages�at�Kaiga.�

10.3 After�deliberations,�it�was�agreed�that�NPCIL�would�provide�2x125�MVAR�reactor�

and�the�63�MVAR�reactor�may�be�used�as�a�spare.�

�

11. Reactive� Compensation� for� Various� Transmission� Schemes� approved� in� previous�

SCMs��

11.1 Director,� CEA� stated� that� reactive� compensation� has� been� proposed� for� the�following� transmission� schemes� approved� in� previous� Standing� Committee�Meetings� and� studies� for� the� same� were� carried� out� and� were� enclosed� with� the�agenda.�

(1) Wardha�–�Hyderabad�(Maheswaram)�GIS�765�kV�Link:��

i. 1�no.�240�MVAR,�765�kV�Bus�Reactors�at�Nizamabad(GIS).��



ii. 1�no.�240�MVAR�switchable� line�reactor�at�Maheshwaram�(GIS)�and�Wardha� for� both� circuits� of� Wardha� –� Hyderabad�(Maheshwaram)(GIS)� 765kV� D/c� line� with� anchoring� at�Nizamabad(GIS).��

iii. 1�no.�240�MVAR�switchable� line�reactor�at�Nizamabad(GIS)�for�both�circuits� of� Wardha� –� Nizamabad(GIS)� 765kV� D/c� line� and�Nizamabad(GIS)�–�Hyderabad�(Maheshwaram)(GIS)�765kV�D/c�line.��

(2) Substation�works�associated�with��Hyderabad�(Maheswaram)(GIS)�765�kV�Substation��

i. 2� nos.� 240� MVAR,� 765� kV� Bus� Reactors� at� Maheshwaram� Pooling�Station�(GIS)�

(3) Sub�station�Works�associated�with�System�Strengthening�in�Southern�Region�for�import�of�power�from�Eastern�Region:��

i. 1�no.�240�MVAR�switchable� line�reactor�at�Vemagiri�Pooling�Station�and� Srikakulam� Pooling� Station� each� for� both� circuits� of� Srikakulam�PP�–�Vemagiri�II�Pooling�Station�765kV�D/C�line.��

ii. 2�nos.�240�MVAR,�765�kV�Bus�Reactors�at�Vemagiri�Pooling�Station.�

iii. 1�no.�80�MVAR,�400�kV�Bus�Reactors�at�Vemagiri�Pooling�Station.��

(4) Transmission�� System�� associated�� with�� ISGS�� Projects�in��Nagapattinam/Cuddalore��Area�of��Tamilnadu�–�Part�A��

(Additional�Reactor�under�this�scheme)�

i. 1� no.� 63� MVAR� line� reactor� at� Nagapattinam� Pooling� Station� and�Salem� New� (Dharmapuri)� each� for� both� circuits� of� Nagapttinam�Pooling� Station� –� Salem� (New)� 765� kV� D/c� line� (initially� charged� at�400�kV)�being�implemented�under�Tariff�based�Bidding.��

ii. 1� no.� 63� MVAR� line� reactor� at� Madhugiri� end� of� Salem� New�(Dharmapuri)�–�Madhugiri�765�kV�S/c�line�(initially�charged�at�400�kV)�being�implemented�under�Tariff�based�Bidding.��

(5) �GREN�ENERGY�CORRIDORS:�ISTS�PART�A�

i. 2�no.�125�MVAR,�400�kV�Bus�Reactors�at�Tirunelveli�Pooling�Station�

11.2 Members�agreed�to�the�above�proposals�for�reactive�compensation.�

11.3 Further�DGM(CTU)�stated� that� it� is� to�be�clarified� that� the�bay�work� for�Dichipalli�substation�for�the�Nizamabad��Dichipalli�400�kV�D/c�line�under�the�scope�of�work�of�



“Wardha�–�Hyderabad�(Maheswaram)765�kV�Link”�are�to�be�built�by�POWERGRID�and�the�same�has�been�covered�in�the�DPR.�The�same�was�noted.�

�

12. Establishment�of�2x500�MVA,�400/230kV�GIS�S/S�at�Tirunelveli�Pooling�Station�

12.1 Director,�CEA�stated�that�for�establishment�of�the�Tirunelveli�Pooling�Station�as�of�GIS� type,� PGCIL� have� informed� that� the� total� land� requirement� of� GIS� type� is� 16�acres�as�compared�to�40�acres�(including�colony)�for�AIS�type.��

12.2 DGM(CTU)� informed� that� PGCIL� is� planning� to� procure� government� land� under�control�of�Hindu�Religious�and�Charitable�Endowments�Department�of�Tamil�Nadu�at�an�estimated�value�of�Rs�2�lakh�per�acre�and�it�can�be�acquired�in�a�lesser�time�frame.� He� suggested� that� it� is� more� techno�economical� to� implement� the�Tirunelveli�Pooling�Station�as�of�GIS�type.�

12.3 POSOCO� suggested� that� Double� Main� and� transfer� bus� arrangement� may� be�considered�in�place�of�‘One�and�half�breaker’�scheme�for�increased�reliability,�which�was�agreed.�

12.4 Accordingly,� following� system� was� agreed� for� giving� LTA� to� wind� generation�projects�in�Tirunelveli�area:�

(i)� Establishment�of�2x500�MVA,�400/230�kV�GIS�type�S/s�at�Tirunelveli�Pooling�Station�with�Double�Main�and�transfer�bus�arrangement�

(ii)� Tirunelveli� Pooling� Station� –� Tuticorin� Pooling� Station� 400� kV� 2xD/c� (Quad)�line�

(iii)� 2x125�MVAR�Bus�Reactors�at�400kV�Tirunelveli�Pooling�Station��

12.5 It�was�agreed�that�these�transmission�works�are�to�be� implemented�after�LTA�has�been�given�to�the�wind�developers�for�injecting�at�Tirunelveli.��

�

13. Transmission� system� for� evacuation� of� power� from� Cheyyur� Ultra� Mega� Power�

Project�(UMPP)�of�4000�MW�capacity�

13.1 Director,� CEA� stated� that� earlier,� a� transmission� system� for� evacuation� of� power�from�Cheyyur�UMPP�was�finalized�during�the�28th�meeting�of�SCPSPSR�held�on�15�June� 2009� considering� commissioning� of� UMPP� in� 2013�14� timeframe.� But,� the�UMPP� project� could� not� be� taken� up� as� planned� and� got� delayed.� Now,� the�establishment� of� the� project� has� been� revived,� and� CTU� has� received� LTA�application�from�M/s�Costal�Tamil�Nadu�Power�ltd.,�which�is�a�SPV�of�PFC.�As�such�



the� transmission� system� for� evacuation� of� power� from� UMPP� may� be� finalized� at�the�earliest.�

13.2 �DCDE(CTU)� informed� that� some� clarification� was� required� from� the� generation�developer� pertaining� to� commissioning� schedule� and� unit� size� of� the� generation�units,�which�has�been�received�recently.�Based�on�the�inputs,�system�studies�shall�

be�carried�out�and�shall�be�put�up�in�the�next�meeting�of�the�standing�committee.�

�

14. APTRANSCO’s� Proposal� regarding� evacuation� scheme� for� procurement� of� 1050�

MW�from�three�generators�

14.1 Director,�CEA�stated�that�APCPDCL�had�requested�APTRANSCO�for�formulation�of�a�Transmission� evacuation� scheme� to� evacuate� � 1050� MW� power� from� the�switchyards�of�following�three�generators�as�per�case�I�bid�clause:��

•� M/s�Thermal�Power�Tech.�Ltd.,�Nellore�Dt.�(500�MW)��

•� M/s�Krishnapatnam�Power�Corporation�Ltd.�Nellore�Dt.�(250�MW).��

•� M/s�PTC�India�Limited�(East�Coast�Energy�Pvt.�Ltd.)�Srikakulam�Dt.(300�MW)�

14.2 Accordingly,�APTRANSCO�has�proposed�following�evacuation�schemes�to�draw�part�power�from�the�above�generators�into�the�STU�network�of�Andhra�Pradesh.�

�

(A)� Proposed� Scheme� at� Nellore� for� evacuation� of� 750� MW� (500� MW� power� from�

M/s� Thermal� Power� Tech.� Ltd� and� 250� � MW� power� from� M/s� Krishnapatnam�

Power�Corporation�Ltd.)�

Sl.�� Description� Qty.�

1� 400�kV�Pooling�SS�with�4x315�MVA�at�Krishnapatnam/Nellore� 1�No.�

2� 400�kV�Twin�Moose�DC�line�form�the�400�kV�Pooling�SS�to�400�kV�Podli�SS�

100�km�

3� 400� kV� Twin� Moose� DC� line� from� the� 400� kV� Pooling� to� the�generator�M/s�Thermal�Power�Tech.�Ltd.�

30�km�

4� 400� kV� Twin� Moose� DC� line� from� the� 400� kV� Pooling� SS� to� the�generator�M/s�Krishnapatnam�Power�Corp.�Ltd.�

30�km�

5� 220�kV�New�line�with�Moose�equivalent�HTLS�conductor�(To�make�LILO�of��3�Nos.�220�kVc�ckts�between�220�kV�Nellore�and�400�kV�

6x20�km�



Manubolu�SS)�

6� Re�conductoring� of� Existing� 3� ckts� between� 220� kV� Nellore� and�400�kV�Manubolu��SS�with�Moose�equivalent�HTLS�conductor�

3x25�km�

�

B)�Proposed�Schemes�at�Tekkali,�Srikakulam�Dt.�For�evacuation�of�300�MW�(300�MW�

power�from�M/s�PTC�India�Limited�(East�Coast�Energy�Pct.�Ltd.)�

Sl.�� Description� Qty.�

1� 400/220�kV�at�Tekkali/near�by�Generator�SS�2x315�MVA� 1�No.�

2� 220�kV�DC�Circuit�with�Moose�equivalent�HTLS�conductor�from�the�proposed�400/220�Tekkali�SS�to�220/132��kV�Tekkali�SS�

15�km�

3� 220kV� 2ndCkt� Stringing� between� 220� kV� Garividi� SS� –� 220� kV�Tekkali�SS�

92�km�

�

14.3 PGCIL� informed�that� they�have�given�LTA�to�M/s�Thermal�Power�Tech.�Ltd�and�to�M/s�PTC�India�Limited�(East�Coast�Energy�Pct.�Ltd.)�and�the�transmission�system�for�this�LTA�is�under�advanced�stage�of�construction/�partly�completed.�The�recovery�of�transmission�charges�would�be�as�per�LTA�agreement�with�the� IPPs� in�accordance�with� the� CERC� regulations.� Also,� APTRANSCO,� being� part� of� LTA� discussion� was�aware�about�it.�

14.4 DGM(CTU)� stated� that� Krishnapatnam� is� a� generation� hub� and� based� on� the� LTA�applications�of�a�number�of�IPPs�coming�up�in�the�region,�transmission�system�was�planned.�The�proposal�of�APTRASNCO� is�unacceptable�as� the� transmission�system�suggested� shall� only� duplicate� and� may� not� be� required.� Further� these� IPPs� were�granted�LTA�based�on�target�beneficiaries�and�as�per�the�regulations�on�firming�up�of� beneficiaries� the� transmission� charges� are� to� be� borne� by� beneficiaries.�Therefore,�as�per�regulation�APTRASNSCO�shall�not�be�relieved�of�the�transmission�charges�just�by�building�this�system.�He�further�added�that�creating�more�than�one�pooling�station�in�the�same�area�is�not�a�techno�economical�solution.�

14.5 DGM(CTU),�PGCIL�further�informed�that�the�Thermal�Powertech�Corporation�India�Ltd.� (TPCIL)�was�granted�LTOA�for�1320�MW�(installed�capacity)�as�per�their�LTOA�application�with�allocation�of�1125�MW�in�SR�&�115�MW�in�WR.�However�TPCIL�has�now� requested� to� reduce� the� Auxiliary� consumption� (@6.5%)� from� the� LTOA�



quantum� of� 1320� MW� which� is� the� Installed� Capacity� of� the� plant.� It� was� agreed�that�this�aspect�would�be�taken�up�in�the�Connectivity�&�LTA�meeting.�

14.6 Director,�CEA�stated�that�transmission�system�should�be�planned�and�built�for�the�entire� capacity.� APTRANSCO� may� build� system� for� Krishnapatnam� Power�Corporation�Ltd.�as�it�has�applied�to�APTRANSCO�only�and�this�was�not�considered�while� planning� transmission� scheme� for� evacuation� of� power� from� this� area.� He�further� said� that� the� bidding� document� requires� the� procurer� to� arrange�transmission� access� from� generation� switchyard,� which� can� be� achieved� through�the�already�granted�LTA�and�instead�of�building�a�parallel�system�He�further�added�that�M/S�Thermal�Power�Tech.�Ltd�has�requested�CEA�that�the�transmission�system�proposed� by� AP� would� result� in� duplicate� transmission� asset,� which� may� be�avoided.�

14.7 SRLDC�was�of�the�view�that�this�proposal�is�not�acceptable�as�it�may�lead�to�similar�difficulties�that�are�being�faced�in�case�of�Udupi�Power.�

14.8 SRPC�stated�that�this�is�a�very�unhealthy�trend,�wherein,�home�state�on�procuring�power� shall� implement� parallel� system� even� though� it� is� not� required� and� an�adequate�system�has�already�been�built/�under�implementation.�It�was�also�stated�that� with� the� creation� of� a� new� state� of� Telangana,� delivery� of� the� share� to�Telangana�shall�become�inter�state�and�even�the�quantum�which�APTRANSCO�have�stated� to� be� procured� under� case�I� bidding� shall� get� reduced� to� that� extent.� This�was�confirmed�by�CE�(TSTRANSCO).�

14.9 Member� (PS)� suggested� that� looking� into� the� criticality� of� the� matter,� CEA� would�like�to�bring�the�matter�to�the�attention�of�Principal�Secretary�of�both�the�states.�

14.10 APTRANSCO�stated�that�they�would�like�to�consult�their�legal�department�regarding�the� issues� pertaining� to� various� clauses� of� Case�I� bidding� and� shall� revert� back�afterwards.�

�

15. Augmentation�of�Talcher�II�Transmission�System�

15.1 Director,�CEA�stated�that�SRPC�has�intimated�that�the�progress�of� implementation�of�Talcher�II�augmentation�transmission�system�was�discussed�in�the�24th�Meeting�of� SRPC� held� on� 15th� March,� 2014.� They� had� informed� that� TANTRANSCO� had�suggested� taking� up� Talcher� back� up� system� in� the� Standing� Committee� Meeting�and� had� requested� to� review� the� requirement� of� Talcher�Gazuwaka� link� in� the�present�grid�scenario.�He�further�stated�that�the�following�transmission�system�was�earlier�agreed�as�part�of�evacuation�system�for�Talcher�II�Augmentation�System:�

i. Talcher�II��Rourkela�400kv�D/c�(Quad)�line�



ii. Talcher�II��Behrampur�400kv�D/c�(Quad)�line�iii. Behrampur��Gazuwaka�400kV�D/c�line�

�15.2 Power�from�Talcher�II�STPS�(2000�MW)�having�SR�constituents�as�its�beneficiaries�is�

evacuated�through�Talcher�Kolar�bipole�HVDC�line.�Talcher�II�Augmentation�scheme�has� been� planned� as� a� back�up� transmission� system� to� cater� to� pole� outage� of�HVDC�line.�

15.3 On� the� issue� of� prolonged� delay� in� implementation� of� Talcher�II� back� up�Transmission�system,�NTPC�representative�expressed�their�concern�and�submitted�the�following:�

1. For� catering� to� the� contingency� of� outage� of� 1�pole� Talcher�Kolar� HVDC� link,�back� up� transmission� systems� were� deliberated� at� various� meetings� of� SCMs�and�RPCs�and�after�collective�efforts�of�CEA,�PGCIL,�SR�States�and�NTPC�a�back�up� Transmission� system� were� approved� in� Standing� Committee� Meetings� of�Southern� Region� and� Eastern� Region� in� 2007,� and� is� to� be� implemented� by�Reliance.�

2. In� the� absence� of� adequate� system� to� cater� to� the� contingency� of� one� pole�outage�of�Talcher�Kolar�HVDC,�the�Talcher�project�is�facing�constraints�in�power�evacuation�to�SR.�On�such�outage�of�HVDC�pole(s),�power�gets�injected�into�ER�system�and�to� limit�the� jerk�on�the�Grid,�generation�back�down/�unit� tripping�has� been� implemented� for� Talcher�II� units.� Accordingly,� NTPC� were� asked� to�put� a� SPS� scheme� and� the� same� is� already� in� place� since� year� 16th� October�2005� named� as� SPS�450.� This� SPS� scheme� has� subsequently� been� revised� by�ERLDC�and�a�SPS��1000�were�also�put�in�service�since�2nd�June�2007.�As�of�now�both�the�SPS�scheme�are�in�place�and�operation�of�SPS��450�or�SPS�1000�are�as�per�instruction�of�ERLDC.��

3. NTPC�informed�that�due�to�restrictions�on�power�evacuation�and�SPS�in�service�since� June�� 2005� is� causing� considerable� generation� loss� due� to� unit� back�down/�trippings.��

4. Since�the�subject�scheme�i.e.�‘Augmentation�of�Talcher�II�Transmission�System’�is� linked� to� reliability/availability� of� Talcher�II� generation� to� Regional�beneficiaries�under�HVDC�pole�outages,�this�scheme�is�critical.�Further,�due�to�operation� of� SPS� for� such� a� long� period� both� the� beneficiaries� as� well� as� the�generation�projects�are�suffering�and�hence�there�is�need�to�review�the�SPS�at�Talcher�II�STPP�on�urgent�basis.�

15.4 Member� Secretary(SRPC)� stated� that� the� matter� was� already� discussed� in� SPRC�meeting�and�since�the�matter� is�subjudice,� therefore�requirement�of�Talcher�back�



up�system�may�not�be�reviewed�by�the�SCPSPSR�at�this�stage.�Members�agreed�with�the�views�of�SRPC.�

�

16. Operational�feedback�on�Transmission�constraints�

16.1 DGM(SRLDC),� POSOCO� presented� the� transmission� lines� constraints� in� Southern�region�,�highlights�of�which�are�given�below:�

� The� SR� has� experienced� high� loading� on� Kolar�Hosur� DC,� S.V.Chathram��Pondy� SC,� Hosur�Salem� both� circuits,� Salem�Udumalpet� DC,� Gooty/�Nelamangala/�Somanahalli�400kV�lines.�POSOCO�report�also�mentions�about�North�South� corridor� constraint� in� future.� He� also� mentioned� that� the�loading� across� S1�S2� would� be� a� concern� going� forward� also� as� there� are�LTA’s� lined� up� across� this� seam.� These� loading/constraints� are� likely� to� be�partly�eased�with�the�already�planned�transmission�system�for�strengthening�of�S1�S2�corridor�(Salem�Salem(New)_Bangalore�quad�D/C�line).�The�Salem�–�Madhugiri�765kV�lines�will�also�help�largely� in�easing�North�–South�corridor�constraints.�

� He�also�mentioned�that�once�these�lines�are�in�place�the�loading�on�400�kV�Salem�Udumalpet� would� be� a� concern� until� the� 400� kV� Arasur�Thiruvalam�line�is�commissioned�

� SR�grid�has�also�experienced�high�loading�on�400kV�Hiriyur�Nelamangala�DC�line� and� Jindal�BTPS� SC� Line.� These� constraints� are� likely� to� remain� until�commissioning� of� the� transmission� system� planned� for� Yermaras� TPS� .� The�220� kV� Hiriyur�Gowrididanur� D/C� line� under� construction� by� KPTCL� would�help�in�relieving�this�line�to�some�extent.�

� POSOCO� report� also� states� that� there� may� be� constraint� in� the� 400kV�Khammam�Nagarjuna�Sagar�SC� line�which�may�ease�after�commissioning�of�400kV�D/C�line�between�Khammam�and�Nagarjuna�Sagar�.��

16.2 He� also� said� that� speeding� up� of� the� Kudamkulam� Unit�1� &� 2,� Neyveli� TPSII� Exp�Unit�1� and� Neyveli� TPSII� Exp� Unit�2� generation� projects,� and� other� generation�projects�in�S2,�would�provide�relief�in�SR�grid.��

�

16.3 �He�highlighted�constraints�at�the�following�ICTs��

� 400/220kV� 315MVA� ICTs� at� Hyderabad� (Ghanapur� 3Nos.,� Mamidipalli�3Nos.,and�Malkaram�3Nos.)��



� 400/220kV�500�MVA�ICTs�at�Somanahalli� �2�Nos.,�Nelamangala��2Nos.and�Hoody�2�Nos.�

� 400/220kV�315MVA�ICTs�at�Mysore�2Nos.�

� 400/220kV��315MVA�ICTs�at�Kalvindapattu�2�Nos�

� 400/220kV��315MVA�ICTs�at�Trichur�2Nos�and�Palakkad�2Nos�

In� this� regard,� CEA� stated� that� newly� planned� substations� at� Maheshwaram�400/220kV,� 2x500MVA,� Gajwel,� Yeddumailaram� likely� to� ease� the� ICTs� at�Hyderabad.� For� easing� the� loading� on� ICTs� at� Bangalore,� redistribution/� re�configuration� of� 220kV� transmission� lines� around� these� substations� is� required.�Similarly,� for� relieving�the� loading�at�Mysore,�strengthening�at�220kV� level�around�Mysore� is� required.� This� needs� to� be� planned�by� KPTCL.� He� further� stated� that� to�relieve�the� loading�at�Kalvindapattu,�newly�planned�substations�at�Thiruvalam�and�Sholinganallur�would�help.�Also,�ICTs�at�Trichur�would�ease�after�Mysore��Kozikode�400kV�line.��

16.4 DGM(SRLDC),�POSOCO�pointed�out�high�voltage�on�a�number�of�400kV�nodes� �

as� given� in� POSOCO� report.� In� this� regard� CTU� stated� that� the� planned�augmentation� of� bus� reactors,� including� SVC/STATCOMs� would� help� in� bringing�down�the�voltages.�Further,�regulating�generation�voltages�and�reactive�absorption�limits�of�generators�need�to�be�undertaken.�

16.5 �DGM(SRLDC),�POSOCO�stressed�the�need�to�speed�up�following�transmission� lines�affecting�grid�operation�adversely:��

� 400kV�Edaman�Cochin�DC�line�

� 400kV�Mysore�Khozhikode�DC�line�

� 400�kV�Salem�Dharmapuri(Salem�New)�Bangalore�DC�line�

� NCTPS�II� Evacuation:� 400kV� Alamathy�SV� Chathram� DC� line� and� Alamathy�Tiruvalam�DC�line�

� Stage�1� Wind� evacuation� system� of� TNEB:� 400kV� Kanarapatti� SS,� 400kV�Kayathar�SS,�400kV�Tirunelvelli�Kanarpatti�Kayathar�DC�line,�400kV�Kayathar�Karaikudi�Pugalur�DC�line�

� 400kV�Kalvindapattu�Pugalur�DC�line�and�400kV�Tiruvalam�Mettur�III�DC�line�

16.6 Member�took�note�of�the�above�observations.�

�

17. Additional�Agenda�related�to�Vemagiri�Khammam�Hyderabad�corridor�



17.1 CE(SP&PA),� CEA� stated� that� CERC� vide� its� order� dated� 09.07.2012� of� petition� No.�127/2012,128/2012�&�156/2012�directed�CEA�to�consider�the�necessity�and�utility�of� Vemagiri�Khammam�Hyderabad� 765kV� D/C� line� in� the�meeting� of� the� Standing�Committee�on�Power�System�Planning�of�SR.��

17.2 He�further�stated�that�CEA�in�its� letter�to�CERC�has�submitted�that�the�Vemagiri�–�Khammam��Hyderabad�765kV�D/C�line�was�awarded�to�PGCIL�for�implementation�and�the�SPV�was�acquired�by�it�in�April,�2012.�Pre�award�activities�for�this�line�have�been� completed� and� some� of� the� post� award� activities� have� already� been�undertaken.�The�transmission�developer�has�already�applied�to�CERC�for�adoption�of� tariff� and� issue� of� transmission� licence.� Thus,� the� Vemagiri� �� Khammam� ��Hyderabad�765kV�D/C�line�may�be�completed�earlier�than�any�new�line�that�may�be�planned� for� evacuation� of� power� beyond� Vemagiri.� The� completion� of� this� line�would�enable�evacuation�of�power�from�gas�based�projects�in�Vemagiri�and�import�of�power�from�Eastern�Region�into�Southern�Region.�Therefore,�it�is�opined�that�the�Vemagiri��Khammam��Hyderabad�765kV�D/C�line�that�is�already�awarded�to�PGCIL�may�be�implemented�as�soon�as�possible.�

17.3 DGM�(CTU)�stated�that� investment�of�about�2000�crores�should�not�be�made�only�on�the�basis�of�completion�of�some�pre�award�activities�but�should�be�based�on�the�utility� of� the� Vemagiri�Khammam�Hyderabad� lines.� He� informed� that�comprehensive�studies�were�carried�out�for�import�requirement�of�Southern�region�and�based�on�the�studies�it�has�been�found�that�this�line�is�not�required�for�meeting�the� import� requirement� of� Southern� region.� In� fact� this� line� which� was� primarily�planned� for� evacuation� of� power� from� gas� based� generation� IPPs� in� the� Vemagiri�area� does� not� carry� substantial� amount� of� power� in� the� absence� of� these�generation�plants.��

17.4 CEA� opined� that� the� Vemagiri�Khammam�Hyderabad� line� may� be� considered�looking�into�the�possibility�of�availability�of�gas�in�the�Vemagiri�area�in�near�future.�

17.5 DGM�(CTU)�informed�that�in�present�form,�this�system�cannot�be�built�as�the�prices�at�which�it�was�bid�two�years�ago�don’t�hold�today.�In�fact,�based�on�the�order�given�by�Hon’ble�commission,�PGCIL�has�returned�construction�stage�Bank�Guarantee(BG)�of�Spectrum�Power�Generation�Ltd�and�Samalkot�Power�Ltd�and�as�such�now�there�are�no�Long�Term�customers� left.�Bids�and�all�procedures� initiated�for�the�system�have�been�undone�and�now�if�the�system�is�rebuilt�then�the�Southern�Region�states�are�the�only�entity�left�for�sharing�of�transmission�charges�and�it�is�for�the�States�to�decide�if�they�are�ready�to�bear�the�same.�



17.6 Director,� CEA�said� that�Samalkot�Power� Ltd� in� a�petition� in� this�case� in�CERC,�has�asked�to�return�the�BG�since�the�transmission�system�is�not�being�built�even�though�the�generation�station�is�being�commissioned.�Samalkot�has�stated�the�following:�

“Since CTU has failed to do its part of construction of transmission system even though generating station has been commissioned, the construction bank guarantee should not be insisted upon and may be returned by CTU.”�

17.7 KSEB� stated� that� in� case� of� availability� of� gas� in� the� Vemagiri� area� in� near� future�then� this� is� the� only� system� that� can� come� earliest.� Therefore,� system� studies�should�be�carried�out�considering�Vemagiri�Khammam�Hyderabad�link.��

17.8 APTRANSCO�stated�that�since�there�is�no�gas�availability�in�Vemagiri�area,�this�link�may�not�be�needed�and�may�be�dropped�as�of�now.�

17.9 KPTCL� stated� that� there� would� be� low�participation� of� bidders� for� the� mentioned�corridor�due�to�uncertainty�of�gas�and�hence�the�link�may�be�dropped.�

17.10 NTPC� agreed� that� even� if� gas� generation� comes� in� the� region� it� will� come� with� a�different�commercial�background�and�then�the�system�that�was�earlier�quoted�by�SPV�will�also�be�on�different�commercial�platform�and�may�be�a�complex�issue�for�contractual�mitigations.�

17.11 TANTRANSCO�supported�proposal�of�dropping�the�Vemagiri�Khammam�Hyderabad�link.�

17.12 TSTRANSCO� stated� that� gas� may� be� available� in� near� future� and� there� may� be�requirement� of� this� link� for� evacuation� of� gas� and� hence� these� transmission� lines�may�be�taken�up.�

17.13 SRLDC� stated� that� these� lines� may� be� required� only� if� Hinduja� generation� comes�earlier� than� the� associated� transmission� system� of� APTRANSCO� that� has� been�planned�to�evacuat�power�from�the�Hinduja�project.�

17.14 POSOCO� stated� that� Vemagiri�Khammam�Hyderabad� lines� may� provide� interlink�between�Wardha�Hyderabad�corridor�and�Srikakulam�Vemagiri�corridor�as�a�East�to�West� transmission� corridor� within� Southern� Region,� and� as� such� these� may� be�taken�for�increasing�reliability.�

17.15 Director,� CEA� opined� that� this� link� may� be� used� for� east� to� west� flow� across�Southern�region�and�transmission�of�power�imported�from�Angul�in�Eastern�Region�towards�Telangana�state.�

17.16 DGM�(CTU),�PGCIL�said�that�the�tendency�of�power�is�to�flow�from�North�to�South�where� power� is� required� and� as� such� no� power� shall� flow� from� east� to� west�especially�in�the�absence�of�gas�at�Vemagiri�and�power�demand�at�Hyderabad�being�



fulfilled�by�Wardha�Hyderabad�link.�He�added�that�issue�of�interlinking�of�Wardha�Hyderabad� and� Srikakulam�Vemagiri� corridors� has� already� been� addressed� by�Hyderabad�Warangal�C’Peta�lines.�

17.17 Director,�CEA�explained�that�the�Vemagiri�–�C’Peta��Warrangal��Hyderabad�765kV�D/C�lines�discussed�and�agreed�earlier�in�this�meeting�are�only�a�slight�modification�of� the� Vemagiri� –� Khammam� �� Hyderabad� 765kV� D/C� lines.� He� opined� that� if� the�Vemagiri� –� Khammam� �� Hyderabad� 765kV� D/C� lines� were� there� or� were� under�construction,�these�would�have�been�modified�(through�LILO�etc)�to�take�advantage�of�import�from�Warora�Warangal�link.�

17.18 Member� Secretary,� SRPC� said� that� these� lines� would� only� duplicate� the�transmission� lines� that� were� later� on� planned� and� agreed� for� import� of� power� to�Southern�region,�and�hence�the�Vemagiri�–�Khammam��Hyderabad�765kV�D/C�lines�may�be�dropped.�

17.19 Based� on� the� above� discussions� it� may� be� inferred� that� the� majority� of� the�

constituents�opined�that�the�Vemagiri�–�Khammam��Hyderabad�765kV�D/C�lines�

awarded�to�a�company�of�PGCIL,�may�be�dropped�as�of�now.�However,�based�on�

the� availability� of� gas/� requests� for� LTAs� from� generating� stations� /� prevailing�

demand�generation� scenario,� the� necessity� and� utility� of� these� lines� may� be�

evaluated�at�that�time.�

�

18. Meeting�ended�with�vote�of�thanks.��

�

��x��x��x��

�



Annex�I��

�

List�of�participants�of�the�37th�Meeting�of�Southern�Region�held�on�31.07.2014�at�NRPC,�

Katwaria�Sarai,�New�Delhi.��

�

Central�Electricity�Authority�(CEA)��

1. Major�Singh� � � � Member(PS)��

2. K.�K.�Arya� � � � Chief�Engineer(SP&PA)��

3. Pardeep�Jindal�� Director�(SP&PA)��

4. Shivani�Sharma�� Dy.�Director(SP&PA)��

�

Southern�Region�Power�Committee�(SRPC)��

8. S�R�Bhat� � � � Member�Secretary�I/c��

9. Anil�� Executive�Enginer�

�

Power�Grid�Corporation�of�India�Limited�(POWERGRID)��

10. DilipRozekar� � � � DGM(CTU)��

11. Anil�Kumar�Meena� � � DCDE(CTU)��

12. Nageswar�Rao�� Sr.�Engineer(CTU)��

13. Ankush�Patel�� Engineer(CTU)��

14. G.�Venkatesh� � � � Engineer(CTU)��

15. K.�jyoth�Kumar�Naidu� � � Officer(CTU)��

�

Power�System�Operation�Corporation�Limited�(POSOCO)��

20. P.�Raghuram� � � � ED,�SRLDC��

21. S.�R.�Narsimhan� � � AGM,�NLDC��

22. S�P�Kumar�� DGM,�SRLDC��

23. Madhukar�G.�� Dy.�Manager,�SRLDC��

�

NTPC�Limited�(NTPC)��

24. S.�S.�Mishra�� AGM�(Engg�Electrical)��

�



Nuclear�Power�Corporation�of�India�Limited�(NPCIL)��

25. SandeepSarwate� � � ACE�(Tr.)��

26. N�K�Jain�� AD(Tr.)�

Neyveli�Lignite�Corporation�Ltd�(NLC)�

27. T�Avudaithanbam� � � ED(Thermal)�

�

Transmission�Corp.�of�Andhra�Pradesh�Ltd.�(APTRANSCO)��

28. S�Subrahamanyam� � � Director�

29. C�V�Subba�Rao�� SE�(SP)��

�

Transmission�Corp.�of�Telangana�State�Ltd.�(TSTRANSCO)��

28. B�Vizian�Kumar�� CE(Plg)�

29. M�Sheshagiri� � � � ADE(SS)��

�

Karnataka�Power�Transmission�Corporation�Ltd.�(KPTCL)��

32. S�Sumant� � � � Director(Trans.)��

33. V�Bharatheesha�Rao�� Dy.�Director��

34. AJ�Hosamani� � � � CEE(P&C)�

35. TV�Srinivas� � � � EE(PSS)� �

�

Kerala�State�Electricity�Board�(KSEB)��

36. K.V.�Nair�� Director�

37. Vijayakumamari�P� � � CE�

38. S�K�Anand� � � � EE�

39. S�SBiju� � � � � AEE�

�

Tamil�Nadu�Electricity�Board�(TNEB)�/�TANGEDCO/TANTRANSCO��

34. Rangaraj�K� � � � Director(TANTRANSCO)�

35. S.�Raichandran�� SE�(TANGEDCO)��

36. R�Santhanakumar� � � EE(TANGEDCO)�

37. R�Kumutha� � � � AEE(TANGEDCO)�

�



Annex�II��

Short�Circuit�Levels�at�765/400kV�Sub�Stations�in�Southern�Region�

�

Sl.�No.�

Substation� Three�Phase� Single�Phase��Name� Voltage�

level�(kV)�

Fault�Current�

(kA)�

Short�Circuit�(MVA)�

Fault�Current�

(kA)�


1� CUDP800� 765� 33.6� 44532� 21.8� 28902�2� KURL800� 765 35.0 46345 23.4� 310353� SHOLAPUR� 765 16.0 21139 11.1� 147144� HYDR_800� 765 30.5 40429 19.3� 255265� DICHPALI� 765 20.8 27556 11.6� 153406� WARN800� 765 29.0 38421 18.7� 247147� NELL�POL� 765 16.5 21843 13.3� 175838� SRI_POOL� 765 19.7 26128 14.9� 196849� VEM�II80� 765 20.9 27713 14.9� 19724

10� CPETA800� 765� 25.7� 34049� 15.9� 21008�11� RAIC800� 765� 25.7� 34044� 17.8� 23565�12� SALE800� 765� 10.4� 13799� 7.8� 10278�13� NCTPS765KV� 765� 23.0� 30518� 22.2� 29447�14� TIRUVLM� 765� 34.7� 45949� 27.4� 36244�15� ETPSREP7� 765� 20.9� 27667� 19.2� 25408�16� ARIYALUR7� 765� 34.6� 45908� 27.3� 36227�17� COIMBTR7� 765� 15.2� 20122� 11.4� 15155�18� RSTP� 400 36.8 25466 37.7� 2608519� HYDR� 400 32.1 22220 21.6� 1496820� NSAG� 400 31.4 21782 23.1� 1597821� KHAM� 400 31.2 21608 22.0� 1526122� VIJW� 400 41.9 29040 32.6� 2255423� GAZW� 400 32.2 22310 30.3� 2101624� CUDP� 400 47.2 32679 33.7� 2333625� GOOT� 400 34.9 24190 21.8� 1513726� CHAND�SR� 400� 10.0� 6947� 6.6� 4546�27� GAZU�SR� 400� 32.2� 22310� 30.3� 21016�28� SSLBPH4� 400� 21.6� 14952� 19.1� 13252�29� HYDR�AP4� 400� 32.6� 22602� 21.7� 15069�30� KURNOOL4� 400� 39.4� 27275� 27.9� 19336�31� SIMHADRI� 400� 34.4� 23837� 34.1� 23657�32� SIMHD�II� 400� 29.1� 20148� 27.7� 19172�33� VIZPOOL� 400� 35.7� 24743� 35.7� 24708�34� VEMAGIR4� 400� 44.8� 31073� 33.4� 23122�35� TPCIL4� 400 28.3 19588 27.0� 1872236� NELLORE4� 400 47.2 32711 36.9� 2559937� RAM�PVT4� 400 26.1 18064 21.0� 1456038� DICHPAL4� 400� 27.3� 18921� 18.0� 12477�



Sl.�No.�


level�(kV)�

Fault�Current�

(kA)�


Fault�Current�

(kA)�


39� GAJWEL4� 400 30.4 21036 21.1� 1460040� MAHABUB4� 400 26.1 18083 16.7� 1153741� CHITOR� 400 48.1 33334 34.2� 2368542� VIJ�AP� 400� 37.6� 26035� 27.1� 18754�43� KRISH�AP� 400 33.4 23129 31.5� 2179644� KURL�NEW� 400� 40.7� 28223� 30.5� 21099�45� KAKTIA�G� 400� 26.3� 18212� 24.1� 16677�46� VIJTP�IV� 400� 41.6� 28836� 32.5� 22498�47� SINGARENI� 400� 11.5� 7970� 11.0� 7624�48� GARIVIDI� 400� 18.4� 12772� 13.0� 9033�49� HINDPR40� 400� 13.6� 9442� 8.7� 6023�50� KOTH�IV� 400� 14.1� 9754� 12.0� 8284�51� MAILARM4� 400� 40.4� 27970� 27.3� 18888�52� MALKARM4� 400� 20.2� 13961� 13.6� 9452�53� MUDN400� 400 9.4 6499 9.3� 643154� SURYPET4� 400 17.9 12401 11.8� 820455� NIRMAL� 400 9.5 6563 7.9� 547156� WARN4� 400 37.8 26201 29.2� 2019957� PODLI� 400 15.8 10960 11.1� 770558� SIMHP�OA� 400 19.2 13332 16.8� 1165559� MENAK�OA� 400 20.9 14481 19.9� 1376460� EAST�OA� 400� 27.1� 18757� 25.8� 17867�61� VEMAG�II� 400� 45.1� 31260� 33.1� 22918�62� NEL�POOL� 400� 48.0� 33234� 43.4� 30056�63� NCCPPL� 400� 28.3� 19588� 27.0� 18722�64� HINDJ�OA� 400� 32.7� 22658� 32.1� 22253�65� CPETA400� 400� 30.6� 21221� 22.3� 15444�66� MAHESWRM� 400� 42.7� 29594� 30.1� 20863�67� NELLORE�AP� 400� 46.9� 32519� 36.8� 25469�68� KVKOTA40� 400� 25.0� 17293� 16.6� 11497�69� KONDPRM� 400 15.9 11003 9.8� 677370� URVKND� 400 16.2 11232 10.0� 690071� FSC�1� 400 6.2 4267 3.6� 252072� FSC�2� 400 6.5 4516 3.8� 265173� FSC�3� 400 4.8 3295 2.8� 191674� FSC�4� 400 4.8 3295 2.8� 191675� SMNH� 400 36.1 25002 23.1� 1599176� MNRB� 400 11.3 7802 7.3� 508577� RAIC� 400� 38.3� 26508� 32.4� 22413�78� DAVAN4� 400� 25.3� 17509� 17.6� 12208�79� HOODI4� 400� 34.8� 24131� 22.2� 15367�80� TALAGUP4� 400� 9.5� 6611� 7.5� 5202�



Sl.�No.�


level�(kV)�

Fault�Current�

(kA)�


Fault�Current�

(kA)�


81� NELMANG4� 400 40.7 28201 26.4� 1830782� UDUPI400� 400 13.3 9226 14.3� 993483� HASSAN4� 400 20.6 14249 14.5� 1002384� MYSORE4� 400� 22.1� 15285� 14.3� 9920�85� KOLAR� 400 34.2 23707 21.8� 1509786� KAIGA� 400� 18.2� 12613� 16.6� 11515�87� RAIC�NEW� 400� 39.1� 27114� 31.5� 21845�88� NARDR�NW� 400� 32.7� 22671� 32.3� 22411�89� GULBRG� 400� 8.2� 5710� 5.6� 3864�90� KUDGI�NT� 400� 32.1� 22247� 33.6� 23257�91� ECITY� 400� 22.6� 15641� 14.6� 10121�92� HIRY� 400� 22.4� 15507� 14.6� 10124�93� NAREND�4� 400� 29.6� 20489� 25.0� 17320�94� TORNGL4� 400� 36.1� 25018� 34.7� 24025�95� BIDADI� 400 37.7 26143 24.3� 1680596� BELLARY� 400 40.9 28338 40.2� 2787697� YERAMRS� 400 25.7 17780 27.3� 1889098� YELAHNKA� 400 31.5 21831 20.5� 1421999� EDLAPUR� 400 24.4 16921 24.6� 17067

100� BELLARY�POOL� 400 42.2 29208 40.7� 28173101� CNHALLI� 400 23.5 16292 15.9� 10984102� MADHUGI4� 400� 48.1� 33298� 32.5� 22495�103� KOCHIN4� 400� 16.7� 11596� 11.3� 7863�104� TNRT� 400� 20.7� 14357� 14.4� 9973�105� TRIVAND4� 400� 9.0� 6255� 5.9� 4110�106� KOZIKOD4� 400� 13.5� 9326� 9.1� 6313�107� PALAKKAD� 400� 21.0� 14527� 14.2� 9834�108� CHENN�EX� 400� 33.2� 22973� 30.6� 21175�109� NYVL� 400� 46.9� 32470� 46.5� 32243�110� MADR� 400� 33.0� 22881� 23.5� 16277�111� SALE� 400 34.9 24167 22.7� 15732112� TRIC� 400 18.4 12725 12.5� 8671113� MADURAI4� 400 32.7 22673 23.2� 16097114� UDMP� 400 39.1 27071 28.9� 20047115� HOSUR4� 400 24.4 16879 15.5� 10773116� PAVOORCHATRM� 400 17.8 12330 12.2� 8438117� NEYEXTN4� 400 37.7 26141 33.9� 23489118� NAGAPTNM4� 400 32.8 22719 29.2� 20251119� PUGALUR4� 400� 31.7� 21944� 20.9� 14472�120� ARSUR4� 400� 27.4� 18964� 19.6� 13569�121� PUGALUR�NEW� 400� 30.2� 20912� 19.3� 13405�122� KARAIK� 400� 26.4� 18284� 18.0� 12485�



Sl.�No.�


level�(kV)�

Fault�Current�

(kA)�


Fault�Current�

(kA)�


123� TIRUNEL4� 400 36.4 25202 29.7� 20588124� NEY_IIEX� 400 37.1 25682 33.2� 23005125� KUDAN4� 400 26.0 18031 27.2� 18833126� ALMATI4� 400� 38.5� 26705� 32.1� 22237�127� OPG400KV� 400 18.1 12556 17.1� 11842128� MANGLAPURAM� 400� 24.4� 16889� 16.2� 11201�129� KANAPATT� 400� 34.2� 23688� 26.0� 17985�130� KAYATHAR4� 400� 41.4� 28703� 35.2� 24394�131� KORATUR4� 400� 28.1� 19437� 22.8� 15793�132� MANALI4� 400� 30.9� 21390� 25.8� 17904�133� METTUR4� 400� 26.6� 18437� 22.4� 15504�134� NEY(REP)4� 400� 45.5� 31498� 45.0� 31198�135� TANJORE4� 400� 12.0� 8331� 8.5� 5878�136� TUTICORN� 400� 29.2� 20235� 28.2� 19557�137� UDNGDI4� 400 29.4 20388 30.4� 21080138� PONDY4� 400 14.5 10027 9.4� 6521139� MYLAPRE4� 400 33.0 22848 26.1� 18107140� MALEKTT� 400 35.8 24814 26.6� 18445141� TIRUVLM� 400 66.2 45872 51.5� 35677142� VALLUR�TPS� 400 29.9 20747 28.9� 20023143� SVCHTRM� 400 37.5 25955 28.9� 20007144� SHOLNGNR� 400� 31.9� 22116� 23.2� 16088�145� KARMDAI� 400� 22.9� 15884� 16.4� 11373�146� TAPPAKUN� 400� 9.1� 6297� 8.7� 6035�147� ANIKADAV� 400� 29.6� 20538� 21.5� 14874�148� TUTI�POOL� 400� 38.8� 26900� 35.9� 24871�149� ILFS�OA� 400� 30.4� 21067� 28.4� 19677�150� RASIPALA� 400� 37.1� 25708� 30.5� 21162�151� DHARMPR� 400� 46.9� 32469� 25.9� 17912�152� CEPL� 400� 24.9� 17250� 24.2� 16765�153� IND�BARATH� 400 22.9 15853 20.1� 13946154� EDAMLYRM� 400 40.4 27970 29.2� 20236155� ETPSEXP4� 400 30.3 20985 31.8� 22060156� PULNTOPE4� 400 31.7 21936 25.6� 17728157� THERVOI4� 400 15.1 10437 14.0� 9708158� ARIYALUR4� 400 40.4 27987 32.8� 22750159� COIMBTR4� 400 40.1 27771 29.5� 20466160� KARAIKUD74� 400 23.5 16290 15.8� 10917161� NCTPSSTG4� 400� 32.5� 22486� 35.5� 24599�162� KAMUTHI4� 400� 15.6� 10783� 10.5� 7293�163� GUINDY4� 400� 36.0� 24951� 28.3� 19609�164� KOLAPALUR4� 400� 26.1� 18082� 19.2� 13305�



Sl.�No.�


level�(kV)�

Fault�Current�

(kA)�


Fault�Current�

(kA)�


165� PALAVADI4� 400 41.5 28721 19.8� 13685166� OTTAPIDARAM4� 400 19.7 13642 15.3� 10623167� SAMUGARANGAP� 400 19.8 13752 16.2� 11245168� SOLINGHUR4� 400� 25.6� 17706� 17.2� 11925��

�

A IIIAnnex-III

Presentation on Dr.B.R.Ambedkar Pranahita- Chevella Sujala Sravati Lift

Irrigation SchemeIrrigation Scheme

CHIEF ENGINEER/Planning,Power System & ITy

• The Government of undivided AP(before02-06-2014) hasdecided to take up the Pranahita – Chevella Lift Irrigationschemescheme.

• The project has huge requirement of power about 3300fMW with a total of 22 Nos. pumping stations under

various packages.

• The project consists of construction of barrage acrossriver Pranahitha at its birth place, (a tributary of riverGodavari) just at the confluence point of Wardha &Godavari) just at the confluence point of Wardha &Waiganga rivers at Tummidihetti (V), Kautala (M),Adilabad dist, with river banks existing in Telangana &Maharastra StatesMaharastra States.

• Dr. BRAPCSS envisages diversion of 160TMC of water by constructing a barrageacross River Pranahita, a major tributary toRiver Godavari.

• This project provides� Irrigation facility for 1640000 hectares of Drought

prone areas in 7 Districts of Telangana State.�10 TMC Drinking water to the villages enrouting 30

TMC Drinking water to twin cities of Hyderabad andS d b d d 16 TMC f tili ti fSecunderabad and 16 TMC as for utilisation ofIndustrial sector.

�Further utilises 19 5 TMC of water from River�Further utilises 19.5 TMC of water from RiverGodavari for Sripada Lift Irrigation Project.

• The requirement of power under different packagesof Dr BRAPCSS in Karimnagar District is:of Dr.BRAPCSS in Karimnagar District is:

S.No Package No

Village Mandal District Voltage Rating and Capacity of

Total power required in MWNo and Capacity of

Pumpsrequired in MW

1 6 Nandimedaram Medaram Karimnagar 6 Nos 13.8 kV 756.00g

2 7 Rangampet Choppadandi Karimnagar 3 Nos 11 kV 150.00

3 8 Venkatraopalli Ramadugu Karimnagar 5 Nos 13.8 kV 720.00

4 9 (Lift-I) Malakpet Konaraopet Karimnagar 2 Nos. 11 kV 30.00

5 10 Tippapur Illanthakunta Karimnagar 8 Nos 13.8 kV 336.00

TOTAL 1992.00

• All the motors are synchronous with 0.95 PF lag/lead

• Power System studies are taken up on thePower System studies are taken up on therequest of Irrigation and CAD Departmentof State Governmentof State Government.

• The studies are carried out with twoalternative connectivity.

Alternate – 1 with the erection of1 400 kV SS at Ramadugu(Pkg 8) Mydaram(Pkg 6) Tippapur(Pkg 10)1. 400 kV SS at Ramadugu(Pkg-8),Mydaram(Pkg-6),Tippapur(Pkg-10)2. 400 kV SS at Choppadandi (Pkg-7) with 2 x 315 MVA ICTs.3. 132 kV SS at Malakpet.4 LILO of both circuits of 400 kV Quad Moose D/C SCCL Gajwel line at the4. LILO of both circuits of 400 kV Quad Moose D/C SCCL-Gajwel line at the

proposed 400 kV Choppdandi SS (total 34 km for two LILO DC lines)5. LILO of both circuits of 400 kV KTPP –Gajwel Twin Moose D/C Line at the

proposed 400 kV Tippapur SS (total 80 km for both LILO DC LInes)proposed 400 kV Tippapur SS (total 80 km for both LILO DC LInes)6. 400 kV Quad Moose D/C lines from 400 kV Choppadandi SS to Mydaram SS

(25 km), 400 kV Ramadugu SS to 400 kV Choppadandi SS (25 km).7. 400 kV Twin Moose D/C lines from 400 kV Dichpalli to the Proposed7. 400 kV Twin Moose D/C lines from 400 kV Dichpalli to the Proposed

400 kV Ramadugu SS(90 km), 400 kV Choppadandi SS to 400 kVTippapur SS(40 km),400 kV Dichpally SS to 400 kV Upcoming 400 kVNirmal SS (60 km) to have a back bone supply from PGCIL lines.( ) pp y

8. 132 kv D/C Line from 220 kV Jagityala SS to the proposed 132 kV Malakpet SS(30 km) to supply Malakpet Lift Irrigation Scheme which is about 30 MW.

Alternate – 2 with the erection of1 400 kV SS at Ramadugu(Pkg 8) Mydaram(Pkg 6) Tippapur(Pkg 10)1. 400 kV SS at Ramadugu(Pkg-8),Mydaram(Pkg-6),Tippapur(Pkg-10)2. 400 kV SS at Choppadandi (Pkg-7) with 2 x 315 MVA ICTs.3. 132 kV SS at Malakpet(Pkg.9).4 LILO of both circuits of 400 kV Quad Moose D/C SCCL Gajwel line at the4. LILO of both circuits of 400 kV Quad Moose D/C SCCL-Gajwel line at the

proposed 400 kV Ramadugu SS (total 50 km for two LILO DC lines)5. LILO of both circuits of 400 kV KTPP –Gajwel Twin Moose D/C Line at the

proposed 400 kV Tippapur SS(total 80 km for both LILO DC LInes)proposed 400 kV Tippapur SS(total 80 km for both LILO DC LInes)6. 400 kV Quad Moose D/C lines from 400 kV Choppadandi SS to Mydaram SS

(25 km), 400 kV Ramadugu SS to 400 kV Choppadandi SS (25 km).7. 400 kV Twin Moose D/C lines from 400 kV Dichpalli to the Proposed7. 400 kV Twin Moose D/C lines from 400 kV Dichpalli to the Proposed

400 kV Ramadugu SS(90 km), 400 kV Choppadandi SS to 400 kVTippapur SS(40 km),400 kV Dichpally SS to 400 kV Upcoming 400 kVNirmal SS(60 km) to have back bone supply from PGCIL lines.( ) pp y

8. 132 kV D/C Line from 220 kV Jagityala SS to the proposed 132 kV Malakpet SS(30 km) to supply Malakpet Lift Irrigation Scheme which is about 30MW.

Alt 2 with N 1 ConditionAlt -2 with N-1 Condition

• N-1 Contingency of SCCL – Ramadugu Line without Dichpallyg y g p yNirmal connectivity.

• N-1 Contingency of SCCL – Ramagdugu DC Line without DichpallyNirmal connectivity.

• Outage of 1x600MW KTPP unit without Dichpally Nirmalconnectivity.

• Outage of 1x600MW KTPP unit with Dichpally Nirmal connectivity.• Outage of one SCCL unit without Dichpally Nirmal connectivity.• Outage of one SCCL unit with Dichpally Nirmal connectivity.• Outage of two SCCL units without Dichpally Nirmal connectivity.g p y y• Outage of two SCCL units with Dichpally Nirmal connectivity.• N-1 Contingency of KTPP- Tippapur Line without Dichpally Nirmal

connectivity.y• N-1 Contingency of KTPP- Tippapur Line with Dichpally Nirmal

connectivity.

The following observations are made from the System Study results:

Th 400kV Di h ll R d DC li i d• The 400kV Dichpally-Ramadugu DC line is proposedto have a PGCIL backbone network.

• The 400kV Dichpalli – Nirmal DC line and the LILO ofThe 400kV Dichpalli Nirmal DC line and the LILO of400kV KTPP-Gajwel at the proposed 400kV TippapurSS are proposed to have reliability and to improveth lt fil i th l diti h llthe voltage profile in the normal conditions when allthe lift loads are running.

• Both the alternatives are more or less same With the• Both the alternatives are more or less same. With theLILO of 400kV SCCL-Gajwel Quad Moose DC line atthe proposed 400kV Ramadugu SS, (ALT-2) there isli ht i t i th lt fil d EHTslight improvement in the voltage profile and EHT

System losses.

With th ti St ti d ll th li i• With the generating Stations and all the lines inOperation, the flows in the connected lines arenormal and within the limits and the voltages at theLIS S b t ti d 380 385 kV d NLIS Substations are around 380-385 kV and NewGenerating Stations are required to match theLoading conditions.

• From the contingency analysis, it can be observedthat SCCL generator is critical. In case of failure ofSCCL generation, the voltages at the proposedSCCL generation, the voltages at the proposedSubstations will be below the stipulated margins andwill not satisfy the planning criteria.

• As such in case of contingency the load shedding• As such, in case of contingency, the load sheddinghas to be resorted to at these pumping stations tillnew Generating stations are operational.

1. Without Lift Loads

2. With Lift Loads

3. With Contingency outage of two units of SCCL

THANK YOUTHANK YOU

Annex-IV

STARTING EQUIPMENT AND METHOD OF STARTING-

To limit the starting power Water depression is envisaged during starting along with the STATIC FRQUENCY DRI VES (VFD ' s . Initially water will be depressed upto the bottom of the runner by keeping the wicket gates closed by admitting pressure air uniformly into the runner chamber. The power drawl at the time of starting is controlled by adopting the static frequency converter method of starting. The starting power is limited to around 6-8 % of the rating of the machine. Once water was depressed to the required level the Field will be applied to the rotor and SFC will be started.

This power is taken at 11 KV terminals of the S.F.C. transformer: The S.F.C. equipment is connected to S.F.C. transformer through which it is connected to 11 kv cubicles SF6 circuit through 11 kv breaker. The 11KVis stepped down to required voltage and is converted to D.C. through silicon control led rect i f i er circuit and again inverted to A.C. supply. This variable frequency and voltage is directly fed to the stator of motor through Breaker and Isolator. During this process, the output voltage and frequency are varied smoothly and fed to the stator of pump motor. Full field current is applied to the rotor just before variable frequency supply is fed to stator. When motor speed reaches to about 4% speed the voltage is again stepped up and fed to the stator of the motor. Application of low frequency supply to the motor results in slow start of the pump motor and drawl of power will be limited.

A f t e r the motor starts, the voltage and frequency of power supplied to the motor is increased (by the S .F .C. equipment) thereby increasing the torque and accelerating the pump motor. When the motor reaches 90% speed, the synchronizing equipment is switched on. Once the frequency and voltage matches to the grid system This will close the circuit breaker after synchronize check thus putting the machine on the grid supply. The S.F.C. is switched off. The Air from the runner chamber will be released by the release operation solenoid valve and then the wicket gates are opened and the pump starts pumping the water into the penstock. The load on the grid will rise to full value depending on grid frequency.

S.F.C. equipment requires 10 tol 5 minutes of cooling down time before it is applied for starting of next pump. This is not as limitation of the operation of the scheme and therefore it is sufficient to have one set of S.F.C. equipment. However to have redundancy 2nd set of all SFC equipment including SFC transformer are provided. Each S.F.C. transformer is of 12 M .V .A . capacity 1 I KV/4.1 6 to 6.6KV.

OTHER SCOPE

11kV SWITCHGEAR PANEL

CORE 1 50VA CL 3P eCORE-2 5OVA CL 0.5 1600A VCB O r w 1600A VC'340a

CORE-1 CL 0.5 15VA

1600/1-1-1A CL PSCORE-3 CL-5P10 1 VA

SPARE FEEDER SAME AS

STARTER FEEDER

11kV/110V/110V TRIP CC.ON OFF TRIP HEALT}1Y

11kV/110V 50VA.CL. 0.5

TRIP CC. A ON OFF TRIPHEALTHY

4 0 aTNC LJR

4OKA

~I ____ I 1 M A ® / p

LTOMOTOR-1 SPARE FEEDER

.1sr~3;. s=:a~ifi

CORE-1 CL 5P10CORE-2 CL PS CORE-3 CL 0.5 15VA CORE-4 CL 5P10

A

C

D

E

F

6

H

Annex VIIAnnex�VII

Presentation��onIssues related to Power Evacuation fromIssues�related�to�Power�Evacuation�from

KKNPP�1&2�(2*1000�MW)�and�KKNPP�3&4�(2*1000MW)By

SANDEEP�SARWATEAdditional�Chief�Engineer�(Transmission)

NPCILNPCIL Mumbai 94NPCIL�Mumbai�94

REGULATORY�FRAMEWORK�FOR�TRANSMISSION�PLANNING

• CEA T i i Pl i C it i (F b 2013) i th “G i• CEA�Transmission�Planning�Criteria�(Feb.2013)�is�the�“Governing�Document”�for�Power�System�Planning�in�Country.

• As�per�this�,the�loading�limit�for�a�transmission�line�shall�be�its�th l l di li itthermal�loading�limit�.�

• Thermal�limits�represent�equipment�limit�that�can�be�sustained�on�continuous�basis.

• Emergency�Thermal�limits�represent�the�equipment�limits�that�can�be�tolerated�for�a�relatively�short�period�which�may�be�one�hour�or�two�hours�depending�upon�equipment�design.

• Emergency�Thermal�limits�for�planning�purpose�shall�be�110%�of�the�normal�thermal�limits.�

• Existing�and�already�planned�transmission�systems��may�be�g y p y yreviewed�with�respect�to�the�provisions�of�these�Planning�Criteria.

• Additional�system�may�be�planned�to�strengthen�the�system�accordingly.accordingly.

POWER�EVACUATION�FROM�2*1000MWE�KKNPP�1&2

KKNPP 1&2 i f 2*1000 M LWR( Li ht W t R t ) @• KKNPP�1&2�comprises�of�2*1000�Mwe LWR(�Light�Water�Reactors)�@�Kudankulam in��Tirunelveli Dist.of Tamilnadu.

• The��1st�unit�has�been�synchronized�on�23�10�2013�whereas�the�2nd�unit�is�under�commissioning.

• The�project�has�been�granted�connectivity�to�the�ISTS�of�CTU�via�2*400�kV�D/c�li Ti l li S/ f POWERGRIDlines�to�Tirunelveli S/s�of�POWERGRID.

• Each�of�the�above�two�nos.�of�D/c��lines�has�been�constructed�utilizing��high�capacity�Quad�conductor.

• Thus�there�are� 4�(four�)�power�evacuation�outlets�from�KKNPP�1&2.( ) p

• Implementation�of�KKNPP�3&4(2*1000MWe)�has�been�proposed�adjacent�to��KKNPP�1&2KKNPP 1&2

POWER�EVACUATION�FROM�2*1000MWE�KKNPP�3&4

CTU t d th f ll i 400 kV id ti it• CTU�suggested�the�following��400�kV�grid�connectivity�

• One�circuit�of�the�1st�D/c�to�Tirunelveli will�be�shifted�to�KKNPP�3&4�,while�the�other�circuit�stays�with�KKNPP�1&2.

• Similarly�one�circuit�of�the�2nd�D/c��to�Tirunelveli will�be�shifted�to�KKNPP�3&4�,while�the�other�circuit�stays�with�KKNPP�1&2.

• A�new�400�kV�D/c��line�will�be�laid��from�KKNPP�3&4�to�Pooling�Station�(P.S.)of�/ g ( )Tuticorin.�One�circuit��of�this�line�will�be�shifted�to�KKNPP�1&2,�whereas�the�other�circuit�will�stay�with�KKNPP�3&4.

• Thus�each�400kV�switchyard�will�have�total�3(three�circuits)�i.e.�two�each�to�Tirunelveli and�one�to�Tuticorin.

EXISTING�&�PROPOSED�POWER�EVACUATION�SCHEMES�

Existing Power Evacuation Proposed Power evacuation schemeExisting�Power�Evacuation�Scheme�from�KK�1&2

Proposed Power evacuation�scheme�from�KK�1&2�and�KK�3&4

Tirunelveli 400�kV Tirunelveli��Tuticorin�P.S.

Q d liQuad�line

400�kVQuad�line��1��Quad�line�2

400�kV��400�kV��

• Kudankulam 1&2�(2*1000MW)KK�1&2(2*1000MW)��KK�3&4(2*1000MW)

Existing��P.S.�Pooling�StationProposedp

THE�CURRENT�INTERIM�SCHEME(schematic)

• One�of�the�four�ckts.to Tirunelveli,�has�been�converted�to�KKNPP�Madurai�400�kV�S/c,�SCHEME(schematic)bypassing�Tirunelveli S/c.

• This�circuit�(upto Tirunelveli)�is�Quad,�and�beyond��it�is�Twin�Moose.y

• In�the�event�of�non�availability�of�Tirunelvelis/s,�the�generation�of�KKNPP�will�be�evacuated�via�radialy connected��Madurai�

Madurai�400�kV

yline.

• As�per�the�suggested�SPS,�generation�@�KKNPP will be regulated to match theTirunelveli 400 kV KKNPP�will�be�regulated�to�match�the�evacuation�capacity�of�KKNPP�Madurai�S/c��(�700�MW�)�within�10�minutes.

• However field experience shows that in

Tirunelveli 400�kV

D/c�Line�2 However�field�experience�shows�that�in�such�a�case�there�will�be�power�swing�and�Madurai�line�may�not�hold.

• There is need for another corridor from

D/c�Line�1

Kudankulam 400��kV• There�is�need�for�another�corridor�from�

KKNPP.Kudankulam 1&2�(2*1000MW)��( 000 )

COMMENTS�OF�NPCIL�ON�THE�PROPOSED�SCHEME

Th d h i 3 f ti i it (f ith f• The�proposed�scheme��envisages�3�nos.�of�evacuating�circuits(from�either�of�the�switchyards),�whereas�in�present�scheme�there�are�4�circuits.

• This�depletes�the�evacuation�capacity�to�75�%,�that�may�call�for�regulation�of�generation under contingencygeneration�under�contingency�.

• This�also�dilutes�reliability�of�drawl�of�“Off�Site�Power”�for�cooling�of�Reactor�core�when�units�are�not�operating.U d N 1 1 di i h d i h d b l f i h l• Under�N�1�1�condition,�the�concerned��switchyard��may�be�left�with�only�one�circuit�to�evacuate�the�entire�generation�of�2000�MW.

• The�available�circuit�may�trip�on�power�swings/load�encroachment�as�explained��in�subsequent�slides.

• Even�fault�on�a�near�by�transmission�line�may�induce�oscillations�in�Kudankulam generating�m/cs.

• In�event�of�a�non�availability�of�Tirunelveli S/s,�the�system��carries�the�risks�of�loss�of�2000�MW(when�KK�1&2�are�operating)�and�loss�of�4000�MW(when�KK�1&2�and�KK�3&4)�are�operating.

TRANSIENT�DATED�20/5/2014�AT��APML�TIRODA�

• On�the�given�day�,�both�400�kV�ckts.(Quad.)��to�Warora were�evacuating�925�MW�each.�765�kV�

MAHARASHTRA line�to�Akola�was�out• Due�to�LA�failure�at�Warora,Line�1�tripped�and�

power�flow�shifted�to�the�Line�2.765 kV Akola

• This�created�power�swing�and�the�other��line�also��tripped�leading�to�loss�of�corridor�and�all�3*660�MW�generation�lost.

765�kV��Akola

Warora��400�kV

• SPS�for�Tiroda�Warora lines�• Alarm�when�either�line�loading�>925�MW• Back�down�when�either�line�loading>�1020�

765�kVAPML

lg

MW• Trip�one�unit�when�either�line�loading�>1480�

MW.

FaultLine�2��Line�1

• Thus,�in�the�event�of�tripping�of�one�line,�before�load�on�the�healthy�line�reaches�near�thermal�limit�(1800MW�for�Quad�line),�the�APML

400�kV

healthy�line�is�also�likely�to�trip�on�Power�Swing��and�results�in�failure�of�SPS.

APML�(3*660�MW�Gen.)

Grid�disturbance�dated�30/7/2013 in Northern

• On�the�given�day�N.R.�and�W.R.�were�operating�in�weak�synchronism�via�400�kV�30/7/2013�in�Northern�

Region Agra�Gwalior�(Quad�S/c�)�line.• Line�loading�was�1450MW�towards�N.R,�and�

it�was�below�the�thermal�limit�of�1800�MW.• Due�to�heavy��reactive�demand�the�voltage�

@�Gwalior�bus�had�gone�down�to�374�kV�as�against�the�acceptable�limit�of�380�kV�and�g pminimum�emergency�limit�of�372kV

• High�current�loading�coupled�with�low�voltage lowered the impedance seen by the

N.R��W.R.400�kV� voltage�lowered��the�impedance�seen�by�the�

relay�and�line�tripped�on�Zone�III�protection�due�to�load�encroachment,�though�there�was�no�fault�in�the�line.�This�line�tripping�

Quad�Line

pp gcreated�wide�spread�instability�in�the�system.

• Thus during the phase of weak grid

Antecedent�power�import�was�1450�MW by N.R. Thus�during�the�phase�of�weak�grid�

connectivity,�a�line�may�not�be�able�to�sustain�loading�near�the�thermal�limit.

MW�by�N.R.Thermal�limit�is�around�1800�MW

• On�given�day�the�400�kV�Chhabra�Bhilwara S/c�tripped�on�fault.

TRANSIENT�DATED�1/2/2014�AT�KAWAI(RAJASTHAN)

pp• This�led�to�loading�of�400�kV�Kawai�Bassi S/c�

going�up�to�840�MW�(Thermal�limit�of�Quad�conductor being 1800 MW)conductor�being�1800�MW)

• Kawai�units�observed�hunting�due�to�sudden�reconfiguration�of�power�flow.

Q.C.�Quad�conductorTM—Twin�Moose�Conductor

• Similar�oscillations�were�experienced�by�RAPS�5,�during�grid�disturbance�on�30/7/12�before�it�tripped�on�dead�m/c�protection.

Hindaun 400�kV

Bassi 400�kV��Bhilwara 400�kV

• Such�oscillations��are�manifestation�of�weak�grid�coupling.

• Subsequently SPS has been implemented @

Q.C��.��TM��TM

(TM) Subsequently�SPS�has�been�implemented�@�Kawai�to�reduce�the�generation�as�soon�as�the�flow�on�Kawai�Bassi line�crosses�750�MW.

• Thus loading limit of a line may not be

( )

400�kV��400�kV

• Thus�loading�limit�of�a�line�may�not�be�determined�alone�by�consideration�of�thermal�limit,�but�also�from�system�transient�stability.

2*660MW��2*250MWKawai��Gen.��Chhabra Gen.

TWO�INDEPENDENT�CORRIDORS�FROM�KKNPP�1&2�

• There�is�need�to�advance�commissioning�KK�3&4�Tuticorin�D/c�line�and�convert�it�into�KK�1&2�Tuticorin�D/c�at�the�earliest.

• The proposal has been agreed by the 36th• The�proposal�has�been�agreed�by�the�36th

Regional�Standing�Committee�on�Transmission�lPlanning.

Annexure-III (Page64of64)

5.The Director (Transmission), Transmission Corp. of Andhra Pradesh Ltd., (APTRANSCO) Vidyut Soudha,

Hyderabad – 500 082.FAX : 040-66665137

6. The Director (Grid Transmission and Management), Transmission Corp. of Telangana Ltd., (TSTRANSCO) Vidyut Soudha, Khairatabad

Hyderabad – 500 082.FAX : 040-23321751

7. The Member (Transmission), Kerala State Electricity Board, Vidyuthi Bhawanam, Pattom, P.B. No. 1028, Thiruvananthapuram - 695 004. FAX : 0471-2444738

8. Member (Distribution), Tamil Nadu electricity Board (TNEB), 6th Floor, Eastern Wing, 800 Anna Salai,

Chennai - 600002. FAX : 044-28516362

9. The Director (Power), Corporate Office, Block – I,

Neyveli Lignite Corp. Ltd., Neyveli , Tamil Nadu – 607 801.

FAX : 04142-252650

10. The Superintending Engineer –I, First Floor, Electricity Department, Gingy Salai,

Puducherry – 605 001. FAX : 0413-2334277/2331556

11. Director (Projects), National Thermal Power Corp. Ltd. (NTPC), NTPC Bhawan, Core-7, Scope Complex, Lodhi Road, New Delhi-110003.

FAX-011-24360912

12. Director (Operations), NPCIL, 12th Floor, Vikram Sarabhai Bhawan, Anushakti Nagar,

Mumbai – 400 094. FAX : 022- 25991258

Copy to:

1. The Director (Projects), Power Grid Corp. of India Ltd. “Saudamini”, Plot No.2, Sector-29, Gurgaon 122 001, Haryana.FAX : 95124-2571932

2. GM, SRLDC, 29, Race Course Cross Road, Bangalore 560 009 FAX – 080-22268725

Annex- I

Corrigendum#1:Corrigendum to Minutes of 37th Meeting of the Standing Committee on Power System Planning in Southern Region (SCPSPSR) held on 31st-July-2014 at NRPC, Katwaria Saria, New Delhi

The minutes of 37th meeting of the Standing Committee on Power System Planning of Southern Region were issued vide our letter No. 51/4/(37th )/SP&PA-2014/1729-42 dated 22 September, 2014. Following corrigendum is issued based on observations/comments received from SRLDC, POSOCO received vide their letters No i) ii) NLDC/Planning/761 dated 24th Sep, 2014

Corrigendum to para 4.4 of the minutes: The para 4.4 is modified as given below:

4.4� APTRANSCO� informed� that� the� transmission� system� associated� with� evacuation� of�Hinduja�Power�Project�shall�be�completed�in�a�year.�SRLDC�stated�that�since�there�are�no� loads�at�Narsaraopeta,� the�combined�power� from�gas�generation� in�Vemagiri�area�and� Hinduja� units� may� be� reduced.� In� this� context� SRLDC� informed� that� it� would� be�difficult� to�accommodate�Vemagiri�gas�generation�more� than�600�MW�along�with� full�import�at�Gazuwaka�and�Hinduja�generation.�SRLDC�informed�that�in�such�condition�the�import� at� Gazuwaka� may� have� to� be� reduced� or� ISGS� in� Vizag� area� may� have� to� be�curtailed.�APTRANSCO�informed�that�in�case�the�full�ATS�(including�strengthening)�is�not�available�the�generation�at�Hinduja�or�Gas�generation�at�Vemagiri�would�be�curtailed.�Representative� from� NTPC� also� emphasised� that� ISGS� should� not� be� reduced� to�accommodate�evacuation�of�plant�with�incomplete�ATS.�APTRANSCO�informed�that�as�a�new� capital� of� Andhra� Pradesh� is� being� envisaged� to� be� built� in� the�Narsaraopeta/Vijayawada�area,�the�load�in�the�area�is�likely�to�increase.��

Corrigendum to para 12.3 of the minutes: The para 12.3 is modified as given below:

12.3 POSOCO suggested that ‘One and half breaker’ may be considered in place of ‘Double bus’ scheme for increased reliability, which was agreed.

Corrigendum to para 17.13 of the minutes: The para 17.13 is modified as given below

17.13 ED, SRLDC informed that as far as System Operator is concerned more lines are advantages. Hence, both 765kV Vemagiri- Khammam – Hyderabad as well as 765kV Vemagir-Chilkaluripeta- Cuddapah may be considered for implementation.

Annexure-V(Page 70 of 70)

Annexure-VI

Annexure-IVAnnexure-VII

Annexure-V(Page1of2)Annexure-VIII

(Page 1 of 2)

Annexure-V(Page2of2)

Annexure-VIII(Page 1 of 2)

Annexure-VIAnnexure-IX

Annexure-X(Page 1 of 4)

Annexure-VIIAnnexure-XI

Annexure-XII(Page 1 of 2)

Annexure-XII(Page 2 of 2)

Annexure- XIII

Annexure-VIII(Page1of2)

Annexure-XIV

Annexure-VIII(Page2of2)

Annexure-XIV

SCAD

A &

CO

MM

UN

ICAT

ION

Stat

us R

evie

w

Sl.N

oD

escr

iptio

nR

emar

ks

1Pe

ndin

g SC

AD

A fi

eld

inpu

ts u

nder

U

LDC

sche

me

2Ta

lche

r Stg

2 En

ablin

g av

aila

bilit

y of

dat

a d

irect

ly to

SR

LDC

3N

TEC

L Va

llur

Stan

d by

dat

a ch

anne

l & V

oice

co

mm

unic

atio

n go

ing

out o

f ord

er

440

0 kV

SR

I & S

RII

stat

ions

St

and

by d

ata

chan

nel

5SR

Con

stitu

ents

R

elia

ble/

Ded

icat

ed in

tern

et

com

mun

icat

ion

6N

LC II

st1

& 2

N

on A

vaila

bilit

y of

dat

a in

real

tim

e Annexure-IX

(Page1of3)

Annexure-XV

Su

mm

ary

of P

endi

ng F

ield

Inpu

ts

Sum

mar

y of

Pen

ding

Fie

ld In

puts

Con

stitu

ent

Des

crip

tion

Pend

ing

as o

n 03

rd N

ov-2

014

Poin

ts A

dded

Po

ints

Atte

nded

Pe

ndin

g as

on

10th

Oct

-20

14

NTP

C R

amag

unda

m

Ana

log

Poin

ts

1 0

0 1

Stat

us P

oint

s 7

0 0

7

Tota

l 8

0 0

8

SR -

II (

POW

ERG

RID

+HVD

C

TALC

HER

)

Ana

log

Poin

ts

8 0

0 8

Stat

us P

oint

s 0

0 0

0

Tota

l 8

0 0

8

NTP

C T

ALC

HER

STP

P

Ana

log

Poin

ts

480

0 48

Stat

us P

oint

s 21

0 0

21

Tota

l 69

0 0

69

NPC

IL-M

APS

Ana

log

Poin

ts

120

0 12

Stat

us P

oint

s 1

0 0

1

Tota

l 13

0 0

13

NPC

IL-K

AIG

A

Ana

log

Poin

ts

100

0 10

Stat

us P

oint

s 0

0 0

0

Tota

l 10

0 0

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NPC

IL-K

KN

PP

Ana

log

Poin

ts

130

0 13

Stat

us P

oint

s 0

0 0

0

Tota

l 13

0 0

13

KA

RN

ATA

KA

Ana

log

Poin

ts

4 0

0 4

Stat

us P

oint

s 0

0 0

0

Tota

l 4

0 0

4

TOTA

L

125

0 0

125

Annexure-IX

(Page2of3)

Annexure-XV

SCAD

A &

CO

MM

UN

ICAT

ION

Non

-ava

ilabi

lity

of V

oice

Com

mun

icat

ion

Sl.N

oSt

atio

nSt

atus

1Ta

lche

r HVD

CG

E IN

TE

RFA

CE

TO

BE

D

ON

E A

T S

RL

DC

2K

olar

HVA

C

3H

iriyu

r

4 H

assa

n

5 N

aren

dra

6 M

ysor

e

7 M

unira

bad

8K

ochi

9 Pa

lakk

adu

10Tr

ivan

drum

11Pu

galu

r

12K

aliv

anth

apat

tu

13Pu

duch

erry

14N

LC T

S - I

I

15N

LC T

S - I

I Exp

ansi

on

16N

LC T

S - I

Exp

ansi

on

17M

APS

18K

AIG

A

19N

TPC

Kay

anku

lam

20A

ndhr

a Pr

ades

h*

Non

-ava

ilabi

lity

of S

tand

by C

hann

el

Sl.N

oSt

atio

nSt

atus

1N

ello

re P

oolin

g St

atio

n

2N

ello

re S

AS

3 W

aran

gal

4K

ochi

5 N

eela

man

gala

6Ta

lche

r RC

I

7 N

LC T

S - I

I Exp

n

8 N

TEC

L Va

llur

9 LA

NC

O

Rel

iabl

e / D

edic

ated

Inte

rnet

Con

nect

ion

Stat

us

Sl.N o

Reg

iona

l Ent

itySt

atus

1N

TPC

RG

DM

/ Si

mha

dri /

Tal

cher

2N

TEC

L Va

llur

3N

LC T

S - I

I / T

S - I

I Exp

n / T

S - I

Expn

4M

APS

/ K

AIG

A

5A

P SL

DC

6K

AR

NA

TAK

A S

LDC

7K

ERA

LA S

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C

9LA

NC

O

10M

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11SE

PL

*Ded

icat

ed v

oice

com

mun

icat

ion

shou

ld b

e th

ere

for A

P

Annexure-IX

(Page3of3)

Annexure-XV

Annexure-XVI

Annexure-X(Page1of4)

Annexure-XVII


Annexure-XVII

Annexure-X(Page3of4)Annexure-XVII


Annexure-XVII

Annexure-XI Page1of2)

Annexure-XVIII

Annexure-XIPage2of2)

Annexure-XVIII

Anne

xure

–XI

X

09 P

ages

(D

etai

ls o

f Rem

edia

l Mea

sure

s etc

. to

be c

ompi

led

with

in a

ccor

danc

e w

ith th

e di

scus

sion

s in

the

Prot

ectio

n su

b- C

omm

ittee

)

S.N

oM

eetin

g

No

/ In

dex

Mee

ting

S.N

OD

etai

ls o

f Eve

nt D

ate

T

ime

Rea

son

PCSC

Rec

omm

enda

tions

Util

ity

Res

pons

ible

to

im

plem

ent*

Stat

us o

f R

ecom

men

datio

n R

emar

ks

130

/I/A

1R

TPS

Trip

ping

inci

dent

s an

d th

e Sp

l mee

ting

held

at

RTP

S on

13t

h an

d 14

th

Mar

ch 2

014

Mar

-14

Spl m

eetin

g he

ld a

t RTP

S on

13th

and

14th

Mar

ch

2014

The

PCSC

foru

m re

com

men

ded

for r

epla

cem

ent o

f exi

sting

el

ectro

mec

hani

cal r

elay

s with

Num

eric

al re

lays

. K

PCL

(1) e

- Ten

der f

olat

ed fo

r the

re

trof

it of

exi

stin

g st

atic

rela

ys

with

Num

eric

al v

ersio

n fo

r lin

es

M.n

agar

,M.b

ad,IC

T-1

& 2

-Te

chni

cal B

id o

pene

d &

pric

e bi

d ye

t to

be o

pene

d.(2

) Ret

rofit

of e

xist

ing

bus b

ar

(CAG

-34)

with

num

eric

al v

ersio

n -

Budg

etet

ory

offe

rs o

btai

ned

and

is un

der p

roce

ss.

Pend

ing

230

/II/1

2Tr

ippi

ng o

f 400

kV

Srisa

ilam

-Sat

enap

alli

line-

1&2

2/17

/201

4@

16:

54 &

17

:45

hrs

Trip

ped

due

to P

LCC

mal

-op

erat

ion.

Sta

tus o

f D.R

/ EL

at S

aten

apal

li

· T

SGEN

CO

info

rmed

that

the

line

tripp

ed a

t Sat

enap

alli

end

due

to

rece

ipt o

f con

tinuo

us d

irect

trip

sign

al fr

om S

risai

lam

. TSG

ENC

O

also

info

rmed

that

the

issue

has

bee

n re

ctifi

ed o

n su

bseq

uent

day

and

no

issu

es w

ere

obse

rved

. The

new

rela

y w

ould

be

in p

lace

with

in 1

1/2

mon

ths.

TSG

ENC

OY

et to

be

info

rmed

Pend

ing

330

/II/2

3Tr

ippi

ng o

f Udu

mal

pet-

Ara

sur l

ine-

22/

17/2

014

@11

:57

hrs

Line

trip

ped

at

Udu

mal

pet e

nd o

nly.

It

was

repo

rted

that

ther

e w

as a

uto

recl

ose

lock

out

du

e to

oil

leak

in b

reak

er.

The

reas

on fo

r lin

e tri

ppin

g du

e to

A/R

lock

ou

t nee

ds fu

rther

in

vesti

gatio

n.

·

The

PCSC

foru

m re

ques

ted

TAN

TRA

NSC

O/P

GC

IL

to se

nd th

e an

alys

is re

port

of th

e in

cide

nt a

t the

ear

liest.

PGC

ILY

et to

be

info

rmed

Pend

ing

430

/II/8

4Tr

ippi

ng o

f NC

TPS-

Ala

mat

hy-1

& N

CTP

S-S.

V.C

hatra

m-1

2/26

/201

4@

16:

25 T

AN

TRA

NSC

O in

form

ed th

at tr

ippi

ng o

ccur

red

whe

n th

e A

lmat

ti C

B w

as c

harg

ed a

t NC

TPS

end

afte

r the

mai

nten

ance

.SR

LDC

en

quire

d ab

out t

he c

omm

issio

ning

of

DR

and

EL

at

NC

TPS.

TAN

TRA

NSC

O in

form

ed th

at o

nly

stand

alon

e D

R a

nd E

L ar

e no

t yet

insta

lled,

but

rela

ys h

ave

built

in D

R/E

L fe

atur

es.T

AN

TRA

NSC

O in

form

ed th

at is

sue

was

take

n up

with

the

OEM

.

TAN

TRA

NSC

OTA

NTR

ASN

CO

info

rmed

that

D

R a

nd E

L ye

t to

be

com

miss

ione

d

Pend

ing

530

/II/1

25

Trip

ping

of R

aich

ur-

Rai

chur

(PG

) lin

e-1&

23/

5/20

14@

3:3

9 hr

s40

0kV

Rai

chur

-R

aich

ur(P

G) l

ine-

1 au

to

recl

osed

and

trip

ped.

Lin

e-2

tripp

ed fr

om R

aich

ur

end

only

The

PCSC

foru

m re

ques

ted

send

the

com

plet

e tri

ppin

g an

alys

is re

port

to th

e PC

SC fo

rum

KPC

L/SR

TS I

(PG

CIL

)Y

et to

be

info

rmed

Pend

ing

631

/I/2

140

0 kV

NEY

VEL

I TS

1 (E

XP)

- TR

ICH

Y24

-Mar

-14

at 4

:20h

rsB

pha

se to

ear

th fa

ult.

DT

rece

ived

from

Ney

veli

end

It w

as su

gges

ted

to c

heck

the

prot

ectio

n se

tting

s.N

LCD

urin

g th

e 38

th P

CSC

,NLC

in

form

ed th

at b

y 1

st w

eek

of

Dec

embe

r 201

4 th

e R

elay

w

ould

be

repl

aced

.

Pend

ing

731

/I/5

240

0 kV

HA

SSA

N -

UPC

L 2

28-M

ar-1

4at

12:

52hr

sFr

om D

.R o

f UPC

L en

d it

is ob

serv

ed th

at e

arth

fa

ult p

rote

ctio

n of

line

go

t ope

rate

d w

hich

re

sulte

d in

trip

ping

of

line.

·

It w

as n

oted

that

Has

san

– U

PCL

lines

trip

ped

on a

ccou

nt o

f ba

ck u

p ea

rth fa

ult p

rote

ctio

n.U

PCL

said

that

mor

e lin

e tri

ppin

gs

(usu

ally

bet

wee

n 12

.00

and

3.00

PM

) are

due

to b

ambo

o/ ru

bber

tree

s on

the

right

of w

ay. U

PCL

said

that

rela

ys w

ould

be

teste

d by

M/s

Alst

om sh

ortly

.Eff

ectiv

e pa

trolli

ng o

f the

line

wou

ld b

e ca

rried

out

as

deci

ded

in th

e m

eetin

g he

ld b

y co

ncer

ned

utili

ty o

ffic

ials.

PG

CIL

su

gges

ted

that

as m

any

trips

are

attr

ibut

ed to

hig

h re

sista

nce

faul

t, ca

rrier

aid

ed d

irect

iona

l sch

eme

is re

quire

d. U

PCL

to a

dopt

IDM

T ch

arac

teris

tics f

or b

ack

up e

arth

faul

t pro

tect

ion.

UPC

L/ K

PTC

L /P

GC

ILY

et to

be

info

rmed

.Pe

ndin

g

* If

any

disc

repa

ncy

It m

ay p

leas

e br

ough

t to

the

notic

e of

SR

PC S

ecre

taria

t at a

t the

ear

liest.

1

831

/I/9

3Tr

ippi

ng o

f 400

kV V

allu

r-K

alav

inda

pattu

line

-1&

213

-Apr

-14

at 2

1:06

hrs

Failu

re o

f B-P

hase

C

urre

nt tr

ansf

orm

er in

V

allu

r Mai

n ba

y at

K

alav

inda

pattu

subs

tatio

n w

hich

resu

lted

in a

bus

fa

ult i

n 40

0kV

bus

-2.

400k

V V

allu

r-K

alav

inda

pattu

line

-2

also

trip

ped

durin

g th

e in

cide

nt.

94

Trip

ping

of 4

00 K

v

KLV

DPT

- V

ALL

UR

114

-Apr

-14

at h

rsLi

ne fa

iled

due

to a

uto

recl

ose

at V

allu

r end

1031

/II/1

540

0 kV

GH

AN

APU

R -

MA

MID

IPA

LLY

20-M

ar-1

4at

15:

20 h

rsLi

ne tr

ippe

d at

Gha

napu

r en

d on

ly o

n D

irect

trip

re

ceiv

e

The

PCSC

foru

m re

ques

ted

TSTR

AN

SCO

/PG

CIL

to c

heck

the

PLC

C

syste

m a

t the

ir re

spec

tive

ends

.TS

TRA

NC

O /

PGC

ILY

et to

be

info

rmed

.Pe

ndin

g

1132

/I/1

1Tr

ippi

ng o

f HV

DC

G

azuw

aka

pole

-1 a

nd

400k

V Je

ypor

e-G

azuw

aka

line-

1

4/21

/201

4at

22:

40 h

rsM

al o

pera

tion

of L

BB

of

Tie

brea

ker (

Gaz

uwak

a en

d) o

f HV

DC

Gaz

uwak

a po

le-1

and

400

kV

Jeyp

ore-

Gaz

uwak

a lin

e-1

caus

ed th

e tri

ppin

g

PGC

IL sh

all s

ubm

it a

deta

iled

repo

rt on

the

tripp

ing

inci

dent

by

6th Ju

ne,

2014

.PG

CIL

Y

et to

be

info

rmed

.Pe

ndin

g

1232

/I/3

240

0kV

JSW

-Gut

tur l

ine

4/29

/201

4at

15:

38 h

rsY

-pha

se to

ear

th fa

ult h

ad

occu

rred

in li

ne. R

easo

n fo

r non

/ uns

ucce

ssfu

l aut

o re

clos

e al

ong

with

reas

on

for o

pera

tion

of D

EFR

at

Gut

tur n

eeds

furth

er

inve

stiga

tion

On

acco

unt o

f tra

nsie

nt fa

ult,

JSW

-Gut

tur l

ine

was

trip

ped

at Ji

ndal

en

d by

dist

ance

pro

tect

ion

and

at G

uttu

r end

by

DEF

R.

SRLDC:•

Ope

ratio

n of

DEF

R n

ot d

esire

d fo

r tra

nsie

nt fa

ult.

• Aut

o re

clos

e (A

R) n

ot o

pera

ting

for D

EFR

is a

cor

rect

& d

esire

d op

erat

ion.

• Un-

mat

chin

g m

agni

tude

of f

ault

curre

nt o

f 11K

A @

JSW

end

and

1.

6 kA

at G

uttu

r end

cou

ld n

ot b

e po

ssib

le.

KPC

L:•

Due

to h

igh

faul

t res

istan

ce (i

.e. 1

40 o

hm p

rimar

y), t

he c

urre

nt w

as le

ss (i

.e.

1600

A) w

hich

cou

ld n

ot in

voke

dist

ance

pro

tect

ion

(21)

.• D

MT

with

1.5

sec

(whi

ch is

mor

e th

an z

one-

3 tim

ing)

is a

dopt

ed fo

r D

EFR

; had

IDM

T be

en a

dopt

ed, i

t wou

ld n

ot h

ave

tripp

ed.

JSW

:• Fa

ult c

urre

nt w

as 1

1 kA

at J

inda

l end

and

dist

ance

pro

tect

ion

alon

g w

ith a

uto

recl

ose

acte

d on

the

JSW

-Gut

tur l

ine.

JSW

/ K

PTC

LY

et to

be

info

rmed

.Pe

ndin

g

1331

/I/8

3Tr

ippi

ng o

f 400

kV K

olar

- TV

VLM

line

& 4

00kV

Sr

iper

umbu

dur-T

iruva

lum

lin

e

11-A

pr-2

014

at 2

0:18

B p

hase

CT

failu

re in

40

0kV

Spd

r- Ti

ruva

lum

lin

e at

Tiru

valu

m e

nd

whi

ch re

sulte

d in

bus

fa

ult.

Com

plet

e ou

tage

oc

curre

d as

line

s wer

e co

nnec

ted

to o

ne 4

00kV

bu

s.

· It

was

not

ed th

at K

olar

-Srip

erum

budu

r lin

e ha

s LIL

O a

t Ti

ruva

lum

.SR

LDC

said

that

thou

gh T

iruva

lum

- Srip

erum

budu

r tri

ppin

g w

as in

ord

er, T

iruva

lum

-Kol

ar li

ne w

ould

not

hav

e tri

pped

. Th

e tr

ippi

ng o

f Tiru

valu

m-K

olar

line

was

due

to

the

abse

nce

of ti

e-C

B a

t Tiru

valu

m.It

was

not

ed th

at a

s of n

ow, K

olar

and

Nel

lore

(1 &

2)

feed

ers a

re b

eing

ope

rate

d w

ithou

t tie

-CB

in th

e on

e an

d ha

lf br

eake

r sch

eme

at T

iruva

lum

.PG

CIL

info

rmed

that

tie-

CB

s for

N

ello

re-1

& 2

line

s are

bei

ng ta

ken

into

serv

ice

first

time

toda

y i.e

. 29

.04.

2014

.SR

LDC

exp

ress

ed c

once

rn o

ver P

GC

IL o

pera

ting

the

400

kV li

nes w

ithou

t tie

-CB

s and

not

info

rmin

g R

egio

nal L

oad

Disp

atch

er

and

state

d th

at th

e ab

senc

e of

tie-

CB

s cam

e to

its n

otic

e in

the

PCSC

m

eetin

g on

ly.•

It w

as st

ated

by

SRLD

C th

at li

ne o

pera

tion

with

sing

le

CB

is a

gain

st th

e pr

otec

tion

philo

soph

y. M

S i/c

, SR

PC a

lso e

xpre

ssed

hi

s con

cern

ove

r the

ope

ratio

n of

Lin

e w

ith si

ngle

CB

and

not

in

form

ing

the

sam

e to

SR

LDC

. The

Reg

iona

l Loa

d D

ispat

cher

wou

ld

not b

e ke

pt in

dar

k re

gard

ing

tie-C

B a

nd it

is n

ot g

ood

for t

he sy

stem

. H

e ur

ged

PGC

IL to

kee

p SR

LDC

info

rmed

of i

f any

cha

nge

in th

e sc

hem

e or

abs

ence

of p

ower

syste

m e

lem

ent /

equi

pmen

t.

PGC

ILY

et to

be

info

rmed

.Pe

ndin

g

Pend

ing

·

PG

CIL

info

rmed

that

the

tripp

ing

occu

rred

due

to

poss

ible

con

figur

atio

n pr

oble

m w

ith L

BB

whi

ch is

hav

ing

two

feat

ures

– c

omm

on tr

ip (f

or w

ithin

bay

) and

inte

r-trip

(for

all

bays

) an

d th

e pr

oble

m h

ad b

een

rect

ified

.

TAN

TRA

NSC

O /

PTA

NTR

AN

SO in

form

ed th

at

Aut

o re

clos

ure

com

miss

ione

dfo

r all

feed

ers o

n24

.07.

2014

2

1432

/I/7

4Tr

ippi

ng o

f 400

kV

Rai

chur

(PG

)-Goo

ty li

ne-

1&2,

400

kV R

aich

ur-

Rai

chur

(PG

) lin

e-1

5/3/

2014

at 1

6:52

hrs

Y-B

pha

se fa

ult h

ad

occu

rred

in

400k

VR

aich

ur-G

ooty

line

-2.

Dist

ance

pro

tect

ion

over

-reac

hed

at R

aich

ur

TPS

end

for 4

00kV

R

aich

ur-R

aich

ur (P

G)

line-

1 an

d A

t Goo

ty e

nd

for 4

00kV

Rai

chur

-Goo

ty

line-

1.

SRLD

C:•

POR

sche

me

is al

read

y th

ere.

•Tim

e st

amps

of e

vent

s in

SOE

sent

to

SR

LDC

is a

ppea

red

to b

e in

corr

ect.•

SOE

of R

aich

ur is

not

bei

ng se

nt to

SR

LDC

.•Eve

n af

ter 2

0 da

ys o

f iss

uing

not

ice,

PG

CIL

has

not

yet

repl

ied

on

test

ing

the

lines

.

P

GC

IL: G

ooty

1 &

2 li

nes w

ere

test

ed a

nd c

orre

cted

on

11.5

.201

4 an

d R

aich

ur li

nes w

ould

also

be

test

ed .

PGC

ILY

et to

be

info

rmed

.Pe

ndin

g

1532

/I/10

5Tr

ippi

ng o

f 400

kV

Kud

anku

lam

-Mad

urai

line

5/5/

2014

at 2

3:47

hrs

Y-p

hase

to e

arth

faul

t had

oc

curre

d ne

ar to

K

udan

kula

m. R

-and

B-

Pole

of b

reak

er tr

ippe

d 75

0ms a

fter t

rippi

ng o

f Y-

Pole

bre

aker

at M

adur

ai.

The

carri

er a

ided

pr

otec

tion

at M

adur

ai e

nd

and

heal

thin

ess o

f PLC

C

link

need

s to

be te

sted

Rec

omm

enda

tions

rega

rdin

g th

e im

plem

enta

tion

sche

dule

of a

uto

recl

ose

feau

tre a

t Raj

asth

an

Ato

mic

Pow

er P

lant

and

KK

NPP

.

NPC

ILY

et to

be

info

rmed

.Pe

ndin

g

1632

/II/6

640

0kV

Ram

agun

dam

-C

hand

rapu

r lin

e –

14/

28/2

014

at 1

4:46

hrs

R-p

hase

to e

arth

faul

t had

oc

curre

d in

line

. Lin

e di

d no

t aut

o re

clos

e

NT

PC:•A

uto

recl

ose

feat

ure

is no

t in

serv

ice

on R

amag

unda

m –

C

hand

rapu

r lin

e du

e H

VD

C b

ack-

to-b

ack

link

at C

hand

rapu

r. It

was

in

form

ed th

at H

VD

C li

nk fa

ces p

robl

em if

ther

e is

auto

-rec

lose

feat

ure.

•It

was

info

rmed

that

now

here

in th

e co

untry

, 3-p

hase

aut

o re

clos

e is

impl

emen

ted

for t

he li

nes a

t gen

erat

ing

stat

ion.

•N

TPC

info

rmed

that

se

ndin

g D

T fo

r the

ear

th fa

ult a

t Cha

ndra

pur e

nd is

not

a c

orre

ct o

pera

tion.

PGC

IL:•P

robl

emat

ic p

rote

ctio

n co

uple

r is t

o be

repl

aced

for t

he li

ne.

•3-p

hase

aut

o re

clos

e fe

atur

e is

impl

emen

ted

on th

e G

azuw

aka-

Jeyp

ore

whi

ch is

hav

ing

HV

DC

bac

k-to

-bac

k at

Gaz

uwak

a. S

ynch

ro c

heck

is d

one

and

1-ph

ase

auto

recl

ose

is co

nver

ted

into

3-p

hase

aut

o re

clos

e.

SR

LDC

:•3

-pha

se a

uto

recl

ose

feat

ure

impl

emen

ted

on G

azuw

aka-

Jeyp

ore

line

is no

t kn

own

to S

RLD

C a

nd it

is n

ot c

lear

und

er w

hat c

ondi

tions

it w

as a

ppro

ved.

H

owev

er, S

RLD

C re

com

men

ds 1

-pha

se a

uto

recl

ose.

M

S i/c

:•P

GC

IL sh

ould

com

e ba

ck w

ith a

pla

n fo

r im

plem

entin

g au

to re

clos

e fe

atur

e on

Ram

agun

dam

– C

hand

rapu

r lin

e.

PGC

IL /

NTP

CY

et to

be

info

rmed

.Pe

ndin

g

1732

/II/7

740

0kV

Gut

tur-N

aren

dra

line-

24/

30/2

014

at 2

0:19

hrs

R-p

hase

to g

roun

d fa

ult.

Line

aut

o re

clos

ed a

t N

aren

dra

end

but f

aile

d to

recl

ose

at G

uttu

r end

KPT

CL:

• B

ays a

re m

aint

aine

d by

PG

CIL

at N

aren

dra.

PGC

IL• R

elay

s wer

e ch

ecke

d in

divi

dual

ly b

ut th

e sc

hem

e of

aut

o re

clos

e is

not y

et

chec

ked.

It w

ill b

e do

ne a

fter t

akin

g th

e lin

e sh

utdo

wn.

PGC

IL /

KPT

CL

Yet

to b

e in

form

ed.

Pend

ing

22-

05-2

014

at 1

5:02

hrs

07-

06-2

014

at 1

9:44

hrs

1933

/I/4

2Tr

ippi

ng o

f 400

kV N

ello

re

pool

ing

statio

n-M

EPL

line

5/23

/201

4at

14:

11 h

rsLi

ne tr

ippe

d at

Nel

lore

po

olin

g en

d on

ly d

ue to

di

rect

trip

rece

ive

from

M

EPL

end.

FIR

: A

t NPS

end

, lin

e tri

pped

afte

r rec

eivi

ng D

T. A

t MEP

L en

d, th

ere

was

DC

ea

rth fa

ult.

Del

iber

atio

ns:

The

issue

was

not

ed.

PGCI

L /M

EPL

Yet

to b

e in

form

ed.

Pend

ing

2033

/I/5

3Tr

ippi

ng o

f 400

kV N

ello

re-

Nel

lore

poo

ling

line-

1&2

and

tripp

ing

of 4

00kV

N

ello

re-S

EPL

line

23-0

5-14

at 1

7:01

hrs &

17

:03

hrs

400k

V N

ello

re-N

ello

re

polli

ng li

ne-1

&2

tripp

ed o

n tra

nsie

nt fa

ults

. 400

kV

Nel

lore

-SEP

L lin

e go

t tri

pped

on

oper

atio

n of

di

rect

iona

l ear

th fa

ult

prot

ectio

n.

Rec

omm

enda

tions

:

repo

rt fo

r all

the

thre

e oc

casio

ns (1

6:59

, 17:

01 a

nd 1

7:03

hrs

) to

SRLD

C a

nd

SRPC

.

SEPL

/ PG

CIL

Y

et to

be

info

rmed

.Pe

ndin

g

Yet

to b

e in

form

ed.

Pend

ing

33/I/

31

Trip

ping

of 4

00kV

Jeyp

ore-

Gaj

uwak

a lin

e-1&

2 an

d Po

le 1

&2

at H

VD

C B

ack

to

d fro

m G

ajuw

aka

end

only

. HV

Rec

omm

enda

tions

SRLD

C a

nd S

RPC

:

PGC

IL

18

3

27-0

5-14

at

14:

26 h

rs &

5/29

/201

4at

17:

01 h

rs22

33/I/

85

Mul

tiple

ele

men

t trip

ping

an

d ge

nera

tion

loss

at

400k

V N

eyve

li TS

-2 st

atio

n

05-0

6-14

at

19:

10 h

rsLi

ghtin

g ca

ble

of sw

itchy

ard

gant

ry to

wer

got

bro

ken

and

fell

over

400

kV b

us-1

re

sulti

ng in

to a

bus

faul

t on

400k

V b

us-1

at N

eyve

li TS

2

SRPC

:• D

ue to

gen

erat

ing

units

trip

ping

at N

LC, a

pro

blem

of l

ow v

olta

ge

cond

ition

s dev

elop

at K

ayat

har a

rea

lead

ing

to w

ind

pow

er w

ithdr

awal

from

th

e gr

id. A

s thi

s with

draw

al is

hav

ing

impa

ct o

n th

e in

ter-

regi

onal

tie-

lines

, th

e iss

ue sh

ould

be

reso

lved

as q

uick

ly a

s pos

sible

.

NLC

Yet

to b

e in

form

ed.

Pend

ing

2333

/I/9

6Tr

ippi

ng o

f 400

kV

Kar

aiku

di-M

adur

ai li

ne05

-06-

14

at 2

0:20

hrs

Line

trip

ped

at M

adur

ai e

nd

only

and

was

hol

ding

from

K

arai

kudi

end

. It w

as

repo

rted

in F

IR th

at li

ne

dist

ance

pro

tect

ion

over

re

ache

d

PGC

IL:

• EPA

C re

lay

mal

-ope

rate

d w

hile

cha

rgin

g th

e Tr

ichy

- K

arai

kudi

line

, hen

ce

the

tripp

ing

of th

e lin

e. T

he fi

le fr

om re

lay

was

dow

nloa

ded

and

repl

ayed

, but

it

did

not t

rip th

e re

lay.

PGC

ILY

et to

be

info

rmed

.Pe

ndin

g

2433

/II/1

740

0kV

Has

san-

UPC

L lin

e-2

19-0

5-20

14

at 1

6:06

hrs

Tran

sient

faul

t had

occ

urre

d in

R-p

hase

and

line

aut

o re

clos

ed fr

om H

assa

n en

d

• It w

as n

oted

that

dist

ance

pro

tect

ion

of M

ain-

I sen

sed

R-Y

faul

t and

Mai

n-II

sens

ed R

-N fa

ult (

2 K

A c

urre

nt).

Rec

omm

enda

tion

and

CTs

for v

aria

tion

in se

nsin

g an

d op

erat

ion.

UPC

L /

PGC

IL

/KPT

CL

Yet

to b

e in

form

ed.

Pend

ing

2533

/II/2

840

0kV

Ram

agun

dam

-H

yder

abad

line

-45/

19/2

014

at 2

1:00

hrs

Tran

sient

faul

t had

occ

urre

d in

R-p

hase

. Lin

e au

to

recl

osed

at R

amag

unda

m

and

faile

d to

recl

ose

at

Hyd

erab

ad d

ue to

dire

ct tr

ip

rece

ive.

• NTP

C:

no P

LCC

cou

nter

has

gon

e up

(inc

rem

ente

d) a

t Ram

agun

dam

• PG

CIL

: DT

was

rece

ived

from

Ram

agun

dam

, and

hen

ce th

e tri

ppin

g of

the

line.

Rec

omm

enda

tion

and

SRTS

I, P

GC

IL .T

he re

port

to b

e se

nt to

PC

SC fo

rum

at t

he e

arlie

st.

NTP

C ,

PGC

ILY

et to

be

info

rmed

.Pe

ndin

g

22-0

5-14

at

19:

32 h

rs

5/23

/201

4 a

t 16:

56 h

rs27

33/II

/510

400k

V V

TPS

– M

alka

ram

-1

5/26

/201

4 a

t 02:

14 h

rs40

0kV

VTP

S-M

alka

ram

line

-1

tripp

ed o

n a

y-Ph

ase

to

grou

nd fa

ult.

Line

aut

o-re

clos

ed a

t Mal

kara

m e

nd

Rec

omm

enda

tion

the

issue

with

the

gene

rato

r ( V

TPS)

for a

ttend

ing/

cor

rect

ing

the

prob

lem

.

TSG

ENC

OY

et to

be

info

rmed

Pend

ing

2833

/II/6

1140

0kV

Kha

mm

am-

Mam

idip

ally

line

-126

-05-

14

at 3

:31

hrs

Line

trip

ped

on a

R p

hase

to

earth

faul

t . L

ine

did

not

auto

recl

ose

and

Y- a

nd B

po

le o

f bre

aker

s ope

ned

400

ms a

fter o

peni

ng o

f R-p

ole

It w

as in

form

ed th

at S

tage

-2 O

/V se

tting

is 1

40 %

@ 1

00 m

s. D

urin

g th

e pr

oces

s of a

uto-

recl

osin

g, O

/V o

ccur

red

at th

e de

ad ti

me

and

the

line

tripp

ed.

PGC

IL /

TSTR

AN

SCO

Yet

to b

e in

form

edPe

ndin

g

2933

/II/1

012

400

kV R

AM

AG

UN

DA

M -

WA

RA

NG

AL

13-0

6-14

at 1

6:38

hrs

B-p

hase

to g

roun

d fa

ult h

ad

occu

rred

. Lin

e fa

iled

to

recl

ose

from

Ram

agun

dam

en

d.

NTP

C:

Mai

n-I d

istan

ce p

rote

ctio

n re

lay

sens

ed si

ngle

pha

se fa

ult a

nd M

ain-

II re

lay

(RA

ZFE-

AB

B) s

ense

d R

-Y (l

ine

to li

ne) f

ault

whi

ch g

ot p

riorit

y ov

er si

ngle

ph

ase

faul

t and

the

line

was

giv

en 3

-pha

se tr

ippi

ng.

NTP

C ,

PGC

IL

,APT

RA

NSC

OY

et to

be

info

rmed

Pend

ing

3034

/I/3

1Tr

ippi

ng o

f HV

DC

Bha

drav

ati

Pole

-1&

27/

9/20

14at

3:5

0 hr

s an

d 5:

04 h

rsA

s rep

orte

d po

le-1

&2

tripp

ed d

ue to

aux

iliar

y su

pply

failu

re.

Rec

omm

enda

tions

:

WR

TS to

subm

it th

e re

port

as p

er IE

GC

gui

delin

es.

to S

R a

lso.

with

WR

and

PG

CIL

if th

e iss

ue is

not

get

ting

reso

lved

.

aver

t sim

ilar o

ccur

renc

e in

the

HV

DC

Bac

k to

Bac

k st

atio

n sh

all b

e su

bmitt

ed.

PGC

ILY

et to

be

info

rmed

Pend

ing

A/R

at B

TPS

end

will

be

danb

led

durin

g N

ovem

ber

2014

End

and

nee

ds L

C

Pend

ing

Yet

to b

e in

form

ed.

Pend

ing

400k

V H

iriyu

r-B

TPS

line-

233

/II/3

926

B p

hase

to g

roun

d fa

ult h

ad

occu

rred

in li

ne a

nd li

ne

auto

recl

osed

at H

iriyu

r end

• KPC

L: A

/R is

not

yet

ena

bled

at R

aich

ur p

lant

.R

ecom

men

datio

n

33/I/

64

Trip

ping

of 7

65kV

Rai

chur

-Sh

olap

ur li

ne

Line

trip

ped

due

to tr

ansie

nt

faul

ts. L

ine

did

not t

ry to

au

to re

clos

e.

Del

iber

atio

ns:

The

issue

was

not

ed.

PGC

IL

KPC

L

21

4

3134

/I/6

240

0/22

0 kV

ICT-

1 &

2 a

t M

UN

IRA

BA

D7/

16/2

014

at 2

:31

hrs

As r

epor

ted

dire

ctio

nal o

ver

curr

ent r

elay

of I

CT’

s op

erat

ed d

ue to

snap

ping

of

line

jum

per i

n 22

0kV

Li

ngap

ur li

ne.

Rec

omm

enda

tions

:

exam

ined

and

revi

ewed

.

KPT

CL

Man

agem

ent a

ppro

val i

s ob

tain

ed fo

r tak

ing

up th

e w

ork

of p

rovi

ding

bus

bar

pr

otec

tion

to 2

20kV

bus

es a

t G

udda

daha

lly (M

unira

bad)

Su

b St

atio

n al

ong

with

re

plac

emen

t of 3

cor

e/ag

e ol

d C

Ts o

f 220

kV b

ays b

elon

g to

K

PTC

L. F

inal

izat

ion

of

sche

me/

spec

ifica

tion

is un

der

proc

ess.

Pend

ing

3234

/I/7

3H

VD

C B

HA

DR

AV

ATH

I PO

LE 2

7/18

/201

4 a

t 20:

10 h

rsA

s rep

orte

d po

le-2

trip

ped

due

on 5

th h

arm

onic

ala

rm.

Rec

omm

enda

tion

:

aver

t sim

ilar o

ccur

renc

e in

the

HV

DC

Bac

k to

Bac

k st

atio

n sh

all b

e su

bmitt

ed.

WR

TS to

subm

it th

e re

port

as p

er IE

GC

gui

delin

es. S

RLD

C is

also

re

ques

ted

to se

nd a

lette

r to

WR

LDC

to su

bmit

the

repo

rts to

SR

also

. Bas

ed

on th

e SR

TS/S

RLD

C c

orre

spon

denc

es, S

RPC

wou

ld ta

ke it

up

with

WR

and

PG

CIL

if th

e iss

ue is

not

get

ting

reso

lved

.

PGC

ILY

et to

be

info

rmed

Pend

ing

3334

/II/2

440

0kV

Kur

nool

-Sris

aila

m li

ne

6/21

/201

4 a

t 7:5

5R

ecom

men

datio

n :

ther

e is

a bu

s cou

pler

at S

risai

lam

, it c

ould

be

done

in a

pha

sed

man

ner.

APT

RA

NSC

OO

ne N

umbe

r of N

umer

ical

D

istan

ce re

lay

was

allo

tted

to

repl

ace

the

static

rela

y o

n Sr

isaila

m fe

eder

at K

urno

ol a

s a

rem

edy.

Rel

ay y

et to

b

com

miss

ione

d.

Pend

ing

3434

/I/3

540

0kv

Kai

ga-G

uttu

r lin

e -2

6/

22/2

014

at 3

:10

D.R

/ E.L

of G

uttu

r sta

tion

not f

urni

shed

Rec

omm

enda

tion

:

KPT

CL

Yet

to b

e in

form

edPe

ndin

g

3534

/I/5

640

0kV

Sris

aila

m-M

amid

apal

li lin

e-2

7/10

/201

4 a

t 23:

54D

.R/ E

.L o

f Sris

aila

m st

atio

n w

ere

not f

urni

shed

.D

elib

erat

ion:

Disc

usse

d in

S.N

o. 4

TSG

ENC

OY

et to

be

info

rmed

Pend

ing

3634

/I/7

740

0kV

Kal

paka

-Vem

agiri

line

-2

7/12

/201

4at

02:

50V

emag

iri e

nd D

.R/E

.L n

ot fu

rnish

ed.

APT

RA

NSC

OA

PTR

AN

SCO

info

rmed

that

EL

was

furn

ished

.Ext

ract

ion

of D

.R

from

REL

316

was

not

pos

sible

. Th

e sa

me

is in

form

ed to

the

com

pany

serv

ice

pers

onne

l.

Pend

ing

3734

/III/1

840

0kV

Rai

chur

-BTP

S lin

e 6/

26/2

014

at 1

:25

hrs

Tran

sient

faul

t in

R-p

hase

. Li

ne d

id n

ot a

uto

recl

ose

Rec

omm

enda

tion

:K

PCL

A/R

at B

TPS

end

will

be

danb

led

durin

g N

ovem

ber,

20

14En

d an

d ne

eds L

C

Pend

ing

3834

/III/3

940

0kV

Val

lur-

Kal

ivan

dapa

ttu

line-

17/

10/2

014

at 1

9:56

hrs

&

20:2

1 hr

sFa

ult i

n B

-pha

se.

Line

did

not

aut

o re

clos

e.

PGC

IL:

• At 1

9:56

hrs

it w

as 2

nd fa

ult w

ithin

a sh

ort t

ime.

• At 2

0:21

hrs

D/T

was

rece

ived

and

whi

le c

harg

ing

it tri

pped

.

PGC

ILY

et to

be

info

rmed

Pend

ing

3934

/IV/a

10U

PCL

age

nda

rega

rdin

g tri

ppin

g of

Has

san

– U

PCL

– 2

line

( trip

ped

12 ti

mes

)

Jul-1

4R

ecom

men

datio

n :

SR. T

he g

uide

lines

had

bee

n in

form

ed to

Hon

’ble

Com

miss

ion

. The

G

uide

lines

wer

e av

aila

ble

on S

RPC

web

site.

KPT

CL

Yet

to b

e in

form

edPe

ndin

g

5

4035

/I/2

122

0 kV

KA

IGA

–

KO

DA

SALL

Y a

n 22

0kV

K

odas

alli

-Nag

jher

i lin

e

7/19

/201

4at

12:

22 h

rs22

0kV

Kai

ga-K

odas

alli

line

tripp

ed o

n op

erat

ion

of o

ver

curr

ent p

rote

ctio

n.

It w

as a

lso re

porte

d th

at 2

20

kV K

odas

alli-

Nag

jher

i lin

e ha

d tri

pped

due

to fa

ult.

From

D.R

of K

AIG

A st

atio

n it

was

obs

erve

d th

at th

e fa

ult

pers

isted

for a

roun

d 34

0 m

s.

Rec

omm

enda

tions

:

a) K

PCL

was

requ

este

d to

send

the

deta

iled

tripp

ing

anal

ysis

repo

rt to

SR

LDC

and

SR

PC.

b) T

he u

tiliti

es a

re re

ques

ted

to se

nd th

e sin

gle

Line

Dia

gram

/ La

y ou

t pla

n of

the

affe

cted

Sub

stat

ion/

Sys

tem

.c)

KPT

CL

/KPC

L t

o re

view

the

SOTF

setti

ngs f

or K

odas

alli

– N

agjh

eri

lines

.d)

Res

istiv

e re

ach

of th

e di

stan

ce re

lay

shal

l be

revi

ewed

to ta

ke c

are

of th

e hi

gh re

sista

nce

faul

t.

KPC

L(i)

As p

er th

e pr

ocee

ds o

f the

PS

AG

-10

rela

ys w

ill b

e re

plac

ed.T

empo

raril

y ar

ange

d.(ii

) SO

TF se

tting

alre

ady

revi

ewed

.(ii

i) R

esist

ive

reac

h is

calc

ulat

ed a

nd w

ill b

e up

load

ed in

the

seon

d w

eek

of

Dec

.201

4.

Pend

ing

4135

/I/5

240

0kV

KTP

S-K

ham

mam

line

-1&

2, K

TPS

unit-

11 tr

ippe

d 7/

31/2

014

at 2

0:31

hrs

CT

blas

t at K

TPS

SRPC

:

Kha

mm

am c

orrid

or a

t the

ear

liest

and

the

sam

e m

ay b

e in

form

ed to

the

SRPC

Sec

reta

riat o

n or

bef

ore

the

next

PC

SC m

eetin

g.

TSG

ENC

O /

PGC

ILY

et to

be

info

rmed

Pend

ing

4235

/I/8

340

0/22

0kV

ICT-

2 at

V

ijaya

wad

a8/

9/20

14at

13:

53 h

rsIC

T tri

pped

due

to

dow

nstre

am fa

ult i

n 22

0kV

sy

stem

.

Rec

omm

enda

tion

:• S

RTS

- I (P

GC

IL) a

nd A

PTR

AN

SCO

wer

e re

ques

ted

to c

heck

up

the

DT

signa

l set

tings

(bot

h at

initi

atio

n an

d re

cept

ion

poin

ts) i

n th

eir r

espe

ctiv

e su

bsta

tions

and

cro

ss c

heck

thei

r sys

tem

. The

det

ails

shal

l be

sent

to S

RPC

Se

cret

aria

t on

or b

efor

e th

e ne

xt P

CSC

mee

ting.

APT

RA

NSC

O/

PGC

ILA

PTR

AN

CO

info

rmed

that

th

ey h

ad c

heck

ed a

ll se

tting

s an

d w

iring

s. Th

e pr

otec

tion

setti

ngs a

t APT

RA

NSC

O e

nd

are

in o

rder

.

Pend

ing

(PG

CIL

)

4335

/II/1

440

0 kV

KU

RN

OO

L -

SRIS

AIL

AM

7/29

/201

4at

20:

50hr

sY

-pha

se to

ear

th fa

ult.

Line

di

d no

t aut

o re

clos

e• O

ld st

atic

rela

y w

ould

be

repl

aced

by

num

eric

al re

lay.

• APT

RA

NSC

O in

form

ed th

e fo

rum

that

the

stat

ic re

lay

wou

ld b

e re

plac

ed

with

the

Num

eric

al re

aly

with

in 3

mon

th’s

tim

e.

APT

RA

NC

OA

PTR

AN

SCO

info

rmed

that

on

e nu

mbe

r of N

umer

ical

di

stanc

e re

lay

was

allo

tted

to

repl

ace

the

static

rela

y on

Sr

isaila

m fe

eder

at K

urno

ol

Subs

tatio

n as

an

inte

irm

mea

sure

.Rel

y ye

t to

be

com

miss

ione

d.

Pend

ing

4436

/I/3

140

0 kV

Kha

mm

am-K

alpa

kka

line-

18/

23/2

014

at 1

8:24

hrs

Line

trip

ped

at K

ham

mam

en

d on

ly o

n op

erat

ion

of

dist

ance

Pro

tect

ion

and

was

ho

ldin

g fro

m K

alpa

ka e

nd.

The

reas

on fo

r ope

ratio

n of

di

stan

ce p

rote

ctio

n ne

eds t

o be

furn

ished

Rec

omm

enda

tions

:

a. In

dica

tion

of th

e SO

TF o

pera

tion

and

Ope

n ju

mpe

r det

ectio

n sh

ould

be

furn

ished

. b.

PG

CIL

was

reco

mm

ende

d to

che

ck th

e fu

se fa

ilure

logi

c an

d th

e re

lay

setti

ngs a

t the

ir en

d.c.

Dist

ance

pro

tect

ion

sche

me

shou

ld b

e in

vest

igat

ed.

PGC

IL w

as re

ques

ted

to re

fer t

he c

ase

to O

EM fo

r pos

sible

rem

edy.

PGC

IL/

APT

RA

NSC

OA

PTR

AN

SCO

info

rmed

that

th

e Li

ne is

inse

rvic

e fr

om

Kal

paka

. The

re is

no

issue

fr

om A

PTR

ASN

CO

Pend

ing

(P

GC

IL)

4536

/I/5

2IC

T -1

& 2

at G

uttu

r Su

bsta

tion

8/26

/201

4at

13:

44 h

rsIC

T’s t

rippe

d on

ope

ratio

n of

Ear

th fa

ult r

elay

. Tr

igge

ring

inci

dent

was

fa

ilure

of J

umpe

r in

220k

V

Gut

tur-

Nee

lagu

nda

line.

Rec

omm

enda

tions

:

a. P

rote

ctio

n Sy

stem

Ana

lysis

Gro

up (P

SAG

-8)

was

hel

d on

25

&

26.0

9.20

14 a

t G

uttu

r (40

0 K

V, K

PTC

L SS

) to

disc

uss t

he fr

eque

nt tr

ippi

ng

of 4

00K

V K

aiga

-Gut

tur l

ines

on

acco

unt o

f ove

r-vo

ltage

and

tran

sient

faul

ts

.The

Min

utes

of t

he P

SAG

-8 M

eetin

g is

encl

osed

her

ewith

as A

nnex

ure

– V

.b.

KPT

CL

was

requ

este

d to

send

the

step

s/ac

tion

take

n to

impl

emen

t the

re

com

men

datio

ns o

f the

PSA

G-8

mee

ting

held

at G

uttu

r on

25&

26.0

9.20

14

to th

e PC

SC.

KPT

CL

Poin

twise

com

plia

nce

on

PSA

G-8

MO

M is

furn

ishe

d to

SR

PC

parti

ally

co

mpl

eted

an

d pa

rtly

Pend

ing

6

4636

/I/6

376

5kV

Rai

chur

-Kur

nool

8/27

/201

5at

10:

15 h

rslin

e tri

pped

at K

urno

ol e

nd

only

and

was

hol

ding

from

R

aich

ur e

nd.

Dist

ance

pro

tect

ion

Zon

e-4

got o

pera

ted

whi

le re

plac

ing

VT

fuse

and

trip

ped

the

brea

ker a

t Kur

nool

end

.

Rec

omm

enda

tions

:Th

e PC

SC fo

rum

requ

este

d P

GC

IL, S

RTS

-I to

che

ck /

revi

ew th

e C

VT

fuse

al

arm

logi

c

PGC

ILY

et to

be

info

rmed

Pend

ing

4736

/I/7

476

5kV

Rai

chur

-Kur

nool

8/30

/201

4at

17:

52 h

rsR

elay

Mal

-ope

ratio

n at

R

aich

ur E

ndR

ecom

men

datio

ns:

The

PCSC

foru

m re

ques

ted

PG

CIL

, SR

TS I

to c

heck

/ re

view

the

CV

T fu

se

alar

m lo

gic.

PGC

ILY

et to

be

info

rmed

Pend

ing

4836

/I/8

5M

ultip

le T

rippi

ng a

t 400

kV

G

uttu

r sta

tion

9/12

/201

4at

12:

22 h

rs40

0kV

Kai

ga-I

, Hiry

ur-I

, N

aren

dra-

I & IC

T-I t

rippe

d at

Gut

tur s

tatio

n du

e to

op

erat

ion

of b

us b

ar

prot

ectio

n of

400

kV B

us-1

at

Gut

tur.

It w

as re

porte

d th

at th

e LB

B p

rote

ctio

n ac

ted

due

to w

rong

co

nfig

urat

ion

of d

istan

ce

rela

y

Rec

omm

enda

tions

:

a. P

rote

ctio

n Sy

stem

Ana

lysis

Gro

up (P

SAG

-8)

was

hel

d on

25&

26

.09.

2014

at

Gut

tur (

400

KV

, KPT

CL

SS )

to d

iscus

s the

freq

uent

trip

ping

of

400

KV

Kai

ga-G

uttu

r lin

es o

n ac

coun

t of o

ver-

volta

ge a

nd tr

ansie

nt fa

ults

.T

he M

inut

es o

f the

PSA

G-8

Mee

ting

is en

clos

ed h

erew

ith a

s Ann

exur

e –

V.

b. K

PTC

L w

as re

ques

ted

to st

eps/a

ctio

n ta

ken

to im

plem

ent t

he

reco

mm

enda

tions

of t

he P

SAG

-8 m

eetin

g he

ld a

t Gut

tur o

n 25

&26

.09.

2014

to

the

PCSC

.

KPT

CL

Poin

twise

com

plia

nce

on

PSA

G-8

MO

M is

furn

ishe

d to

SR

PC

parti

ally

co

mpl

eted

an

d pa

rtly

Pend

ing

4936

/I/9

622

0kV

Sris

aila

m ri

ght b

ank

stat

ion

9/3/

2014

at 1

0:41

hrs

It w

as re

porte

d th

at tr

ip w

ire

to c

ircui

t bre

aker

of 2

20kV

D

indi

-2 w

as o

pen

whi

ch

resu

lted

in o

pera

tion

of L

BB

pr

otec

tion

and

tripp

ing

of a

ll el

emen

ts c

onne

cted

to

220k

V B

us-2

.

Del

iber

atio

n &

Rec

omm

enda

tion:

a.

The

iss

ue w

as d

iscus

sed

in th

e Pr

otec

tion

Syst

em A

naly

sis G

roup

(PSA

G-

9) m

eetin

g h

eld

at S

risai

lam

Rig

ht B

ank

Pow

er H

ouse

(SR

BPH

) on

14&

15

.10.

2014

.b.

APG

ENC

O w

as re

ques

ted

to in

form

the

step

s /ac

tion

take

n to

impl

emen

t th

e PS

AG

-9 m

eetin

g re

com

men

datio

ns d

urin

g th

e ne

xt P

CSC

.

APG

ENC

OPo

intw

ise c

ompl

ianc

e on

PS

AG

-9 M

OM

is fu

rnis

hed

to

SRPC

parti

ally

co

mpl

eted

an

d pa

rtly

Pend

ing

5036

/I/10

722

0kV

Sris

aila

m ri

ght b

ank

stat

ion

9/3/

2014

at 1

6:09

Mal

-ope

ratio

n of

LB

B re

lay

whi

ch re

sulte

d in

trip

ping

of

all e

lem

ents

con

nect

ed to

22

0kV

Bus

-1

Del

iber

atio

n &

Rec

omm

enda

tion:

a. T

he i

ssue

was

disc

usse

d in

the

Prot

ectio

n Sy

stem

Ana

lysis

Gro

up (P

SAG

-9)

hel

d at

Sris

aila

m R

ight

Ban

k Po

wer

Hou

se (S

RB

PH) o

n 14

& 1

5.10

.201

4 .

b. A

PGEN

CO

was

requ

este

d to

info

rm th

e st

eps /

actio

n ta

ken

to im

plem

ent

the

PSA

G-9

mee

ting

reco

mm

enda

tions

dur

ing

the

next

PC

SC.

APG

ENC

OPo

intw

ise c

ompl

ianc

e on

PS

AG

-9 M

OM

is fu

rnis

hed

to

SRPC

parti

ally

co

mpl

eted

an

d pa

rtly

Pend

ing

5136

/II/1

840

0kV

Mun

iraba

d - G

uttu

r8/

17/2

014

at 4

:05

hrs

R-p

hase

to e

arth

faul

t. Li

ne

did

not a

uto

recl

ose

at

Mun

iraba

d en

d

PGC

IL:

Pro

blem

cou

ld b

e at

line

CB

side

.SR

LDC

: A

/R sc

hem

e ne

eds c

heck

ing.

KPT

CL

/ PG

CIL

Yet

to b

e in

form

edPe

ndin

g

5236

/II/2

940

0kV

Mad

urai

-Cos

tal E

nerg

y8/

21/2

014

at 1

4:50

B-p

hase

to e

arth

faul

t. Li

ne

did

not a

uto

recl

ose

at

Coa

stal

Ene

rgy

end

.

SRLD

C:

Ther

e w

as a

n ea

rth fa

ult o

n B

-pha

se a

nd su

bseq

uent

ly A

/R sc

hem

e ha

s bee

n re

ctifi

ed.

TAN

TRA

NSC

O /

/PG

CIL

/ C

oast

al

Ener

gy

Yet

to b

e in

form

edPe

ndin

g

5336

/II/3

1040

0kV

JSW

-Gut

tur l

ine

8/21

/201

4 a

t 23:

32 h

rsR

-pha

se to

ear

th fa

ult.

Line

di

d no

t aut

o re

clos

e• D

ecap

ping

of i

nsul

ator

resu

lted

in p

ersis

ting

faul

t tha

t led

to th

e tri

ppin

g of

th

e lin

e.JS

W /

KPT

CL

Yet

to b

e in

form

edPe

ndin

g

5436

/II/5

1140

0kV

Ram

agun

dam

-C

hand

rapu

r lin

e –

18/

25/2

014

at 1

7:52

hrs

Line

trip

ped

on B

-pha

se to

ea

rth fa

ult.

As p

er F

IR o

f ch

andr

apur

stat

ion,

line

did

no

t aut

o re

clos

e as

aut

o re

clos

e is

kept

out

of

serv

ice.

Rec

omm

enda

tion:

PGC

IL to

take

up

the

issue

with

OEM

in th

is re

gard

.PG

CIL

Yet

to b

e in

form

edPe

ndin

g

9/3/

2014

at 1

2:46

hrs

04-

09-2

014

at 1

2:52

hrs

TSTR

AN

SCO

info

rmed

that

fr

om th

eir e

nd D

R &

EL

Pend

ing

(A

PGEN

CR

-pha

se to

ear

th fa

ult.

line

did

not a

uto

recl

ose

APG

EN

CO

: • D

R a

nd E

L w

ere

not u

ploa

ded

(at S

RLD

C w

ebsit

e) fo

r thi

s eve

nt, a

s the

36

/II/7

1240

0kV

VTP

S-M

alka

ram

line

55

TSTR

AN

SCO

/ A

PGEN

CO

7

5636

/II/8

1340

0kV

Rai

chur

-Mun

iraba

d lin

e 9/

7/20

14at

00:

03hr

s B

-pha

se to

ear

th fa

ult h

ad

occu

rred

in li

ne. L

ine

auto

re

clos

ed a

t Mun

iraba

d en

d an

d fa

iled

to re

clos

e at

R

aich

ur e

nd

KPT

CL:

PD

(pol

e di

scre

panc

y) ti

me

dela

y w

ould

be

chan

ged.

PGC

IL /

KPT

CL

Yet

to b

e in

form

edPe

ndin

g

5736

/II/9

1440

0kV

Ara

sur-

Met

tur L

ine

I9/

29/2

014

at 2

1:10

hrs

Rec

omm

enda

tion:

Met

tur S

/s to

Ena

ble

A/R

Sch

eme.

TAN

TRA

NSC

OD

urin

g th

e 38

th P

CSC

mee

ting

,TA

NTR

AN

SCO

info

rmed

th

at th

e A

uto

Rec

losin

g fa

cilit

y w

ould

be

enab

led

with

in 1

5 da

ys.

Pend

ing

5837

/I/1

1Tr

ippi

ng o

f 400

/220

kV IC

T-1

& IC

T-2

at 4

00kV

W

aran

gal s

ubsta

tion

9/18

/201

4at

21:

01 h

rsIC

T’s t

rippe

d du

e to

op

erat

ion

of D

irect

iona

l Ea

rth F

ault

rela

ys o

n 40

0 K

V si

de o

f IC

T 1

&2.

It

was

info

rmed

that

faul

t ha

d oc

curre

d in

do

wns

tream

220

kV

syste

m. F

rom

D.R

of

ICT’

s fau

lt am

pere

of

2kA

and

2.7

kA in

R

phas

e w

as o

bser

ved

for

ICT-

1&2

resp

ectiv

ely.

Th

e tri

ppin

g ne

ed fu

rther

an

alys

is as

the

faul

t cu

rrent

was

not

hig

h to

op

erat

e th

e H

igh

set o

f ea

rth fa

ult r

elay

and

ther

e w

as n

o de

laye

d cl

eara

nce

of fa

ult i

n 22

0kV

syste

m.

Rec

omm

enda

tions

:PG

CIL

is re

ques

ted

to se

nd tr

ip a

naly

sis in

dica

ting

the

caus

e of

hig

h se

t op

erat

ion

desp

ite n

ot v

ery

high

faul

t cur

rent

.

PGC

ILY

et to

be

info

rmed

Pend

ing

5937

/I/2

2Tr

ippi

ng o

f 400

kV B

us-1

and

40

0kV

Ram

agun

dam

-N

agar

juna

saga

r lin

e

9/19

/201

4at

12:

44 h

rsLB

B p

rote

ctio

n of

400

kV

Ram

agun

dam

-N’s

agar

line

ha

d m

al-o

pera

ted

due

to

spur

ious

initi

atio

n fro

m 8

6 tri

p re

lay

whi

ch c

ause

d tri

ppin

g of

400

kV

Ram

agun

dam

-N’s

agar

line

an

d di

rect

trip

to re

mot

e en

d. A

long

with

this

LBB

in

itiat

ed 4

00kV

Bus

-1 tr

ip

whi

ch re

sulte

d in

trip

ping

of

all t

he b

reak

ers c

onne

cted

to

Bus

-1 a

t Ram

agun

dam

st

atio

n. R

emed

ial a

ctio

ns

take

n m

ay b

e fu

rnish

ed to

PS

C

Rec

omm

enda

tions

:N

TPC

is re

ques

ted

to e

xplo

re th

e po

ssib

ility

of i

nclu

ding

re-tr

ip fe

atur

e in

the

LBB

rela

y be

fore

act

ual L

BB

initi

atio

n.

Yet

to b

e in

form

edPe

ndin

g

6037

/I/3

3Tr

ippi

ng o

f 400

kV R

aich

ur-

Mah

boob

naga

r lin

e 9/

20/2

014

at 2

2:34

hrs

line

tripp

ed a

t Rai

chur

end

on

ly d

ue to

ope

ratio

n of

ca

rrie

r loc

k ou

t rel

ayR

ecom

men

datio

ns:

KPC

L is

requ

este

d to

exp

edite

the

proc

ess o

f ins

talli

ng a

dequ

ate

DC

ba

tterie

s for

PLC

C sy

stem

.

KPC

LY

et to

be

info

rmed

Pend

ing

6137

/I/4

476

5/40

0 kV

ICT-

3 at

NPS

9/22

/201

4at

7:4

8 hr

sFI

R, D

.R, E

.L n

ot

subm

itted

. As p

er v

erba

l in

form

atio

n L.

A fa

ilure

had

ca

used

trip

ping

of I

CT

Rec

omm

enda

tions

:a.

As d

espi

te n

orm

al v

olta

ge a

t 400

kV

bus

, new

LA

and

bus

reac

tors

in

serv

ice,

the

failu

re o

f LA

shal

l be

inve

stig

ated

by

PGC

IL a

nd a

repo

rt sh

all b

e se

nt to

the

PCSC

foru

m.

b. E

fforts

shal

l be

mad

e to

retri

eve

the

DR

dat

a pe

rtain

ing

to th

e di

ffere

ntia

l op

erat

ion

and

the

retri

eved

dat

a sh

all b

e se

nt to

PC

SC fo

rum

. c.

Equ

ipm

ent

failu

re re

port

for 4

00 k

V L

A sh

all b

e se

nt to

SET

D d

ivisi

on o

f C

EA, N

ew D

elhi

.

PGC

IL /

NPS

Yet

to b

e in

form

edPe

ndin

g

8

6237

/I/5

522

0kV

Am

bew

adi-P

onda

line

9/25

/201

4at

12:

54 h

rsA

s per

FIR

line

was

han

d tri

pped

due

to 2

20/1

10kV

B

us d

ead.

Rea

son

for b

us d

e-en

ergi

zatio

n m

ay b

e fu

rnish

ed to

PSC

Rec

omm

enda

tions

:a.

A tr

ip a

naly

sis re

port

shal

l be

with

the

corr

ectiv

e ac

tions

for t

he fo

llow

ing

issue

s sha

ll be

sent

to P

CSC

foru

m.

b. M

easu

res f

or p

reve

ntin

g A

mbe

wad

i – N

agjh

eri l

ine

-1 o

peni

ng in

cas

e of

fa

ult o

n th

e A

mbe

wad

i – N

agjh

eri l

ine

-2 a

nd v

ice

vers

a.

KPT

CL

Yet

to b

e in

form

edPe

ndin

g

6337

/I/6

6Tr

ippi

ng o

f 400

KV

Has

san-

UPC

L lin

e-2

9/25

/201

4 a

t 16:

16 h

rsH

igh

resis

tanc

e fa

ult a

s the

fa

ult a

mpe

re w

as v

ery

less

i.e

., 0.

6kA

at H

assa

n en

d an

d ne

arly

0.9

kA a

t UPC

L en

d. B

ack

up e

arth

faul

t pr

otec

tion

had

oper

ated

at

Has

san.

At U

PCL

end

the

high

resis

tanc

e fa

ult g

ot

conv

erte

d in

to a

R p

h-B

-ph

faul

t whi

ch re

sulte

d in

op

erat

ion

of d

istan

ce

prot

ectio

n Zo

ne-1

. The

re

ason

for n

on-p

icki

ng u

p of

B

ack

up e

arth

faul

t at U

PCL

need

s inv

estig

atio

n.

Rec

omm

enda

tions

:a.

At U

PCL

end,

unu

sed

zone

s of d

istan

ce p

rote

ctio

n (p

roba

bly

zone

5 to

8)

shal

l be

disa

bled

.b.

At U

PCL

end,

tim

e sy

nchr

oniz

atio

n be

twee

n m

ain-

1 an

d m

ain-

2 re

lays

sh

all b

e en

sure

d.c.

UPC

L sh

all e

nsur

e tim

e sy

nchr

oniz

atio

n w

ith H

assa

n su

bsta

tion.

d. R

easo

ns fo

r non

ope

ratio

n of

bac

k up

pro

tect

ion

at U

PCL

for h

igh

resis

tanc

e fa

ult i

s to

be su

bmitt

ed.

e. R

easo

ns fo

r not

send

ing

DT

to U

PCL

by H

assa

n en

d is

to b

e su

bmitt

ed.

f. Se

tting

s of U

PCL

are

to b

e re

view

ed a

nd in

form

ed to

PC

SC fo

rum

.

UPC

L / K

PTC

L /

PGC

ILY

et to

be

info

rmed

Pend

ing

6437

/I/7

7Tr

ippi

ng o

f 40

0/22

0 kV

ICT-

1 A

T B

TPS

9/27

/201

4at

16:

22hr

sFI

R, D

.R, E

.L n

ot

subm

itted

. As p

er v

erba

l in

form

atio

n du

e to

pro

blem

in

220

kVsid

e

Rec

omm

enda

tions

:K

PCL

is re

ques

ted

to c

olle

ct D

L, E

L an

d tri

p an

alys

is an

d su

bmit

to P

CSC

fo

rum

.

KPC

LY

et to

be

info

rmed

Pend

ing

6537

/I/9

9Tr

ippi

ng o

f 40

0/22

0kV

ICT-

1&2

at U

PCL

10/4

/201

4at

12:

16 h

rsIC

T-1&

2 tri

pped

dur

ing

trans

ient

faul

t in

R-p

hase

in

400k

V H

assa

n-U

PCL

line-

1

Rec

omm

enda

tions

:To

avo

id tr

ippi

ng o

f IC

Ts fo

r lin

e fa

ult,

UPC

L is

requ

este

d to

revi

ew th

e se

tting

s of I

CT’

s SEF

rela

y an

d co

nsid

er ID

MT

setti

ng in

stea

d of

exi

stin

g D

efin

ite T

ime

setti

ng.

UPC

LY

et to

be

info

rmed

Pend

ing

37/I/

1010

Trip

ping

of 4

00kV

NPS

-M

EPL

line

10/8

/201

4 a

t 7:0

4 hr

sLi

ne tr

ippe

d du

e to

DT

rece

ive

from

MEP

LR

ecom

men

datio

ns:

a. T

he e

xact

reas

on fo

r rec

eipt

of D

T sig

nal a

t NPS

end

from

MEP

L en

d ha

s to

be

foun

d ou

t and

cor

rect

ive

mea

sure

s nee

d to

be

take

n up

by

both

MEP

L an

d N

PS to

avo

id it

s rec

urre

nce.

b. T

he fo

rum

dec

ided

to in

vite

MEP

L an

d SE

PL w

hene

ver t

here

is a

trip

ping

in

volv

ing

thei

r pow

er st

atio

ns.

MEP

L /

PGC

ILY

et to

be

info

rmed

Pend

ing

6637

/I/11

11Tr

ippi

ng o

f 40

0 kV

NPS

- TP

CIL

210

/8/2

014

at 7

:04

hrs

Line

trip

ped

at N

PS e

nd

only

. As p

er F

IR, R

-B p

hase

fa

ult h

ad o

ccur

red

in 4

00kV

N

PS-T

PCIL

line

-1

Rec

omm

enda

tions

:a.

At N

PS e

nd, c

orre

ctiv

e m

easu

res s

hall

be ta

ken

to a

void

trip

ping

of l

ine-

2 C

B fo

r the

faul

t on

line-

1 an

d vi

ce v

ersa

.b.

Bot

h N

PS a

nd T

PCL

shal

l ens

ure

time

sync

hron

izat

ion

with

eac

h ot

her.

c. S

tatu

s of r

ecom

men

datio

ns o

f PSA

G-1

mee

ting

held

at N

PS (o

n 24

th Ju

ly,

2013

) sh

all b

e su

bmitt

ed.

TPC

IL /

PGC

IL

Yet

to b

e in

form

edPe

ndin

g

6737

/I/13

12Tr

ippi

ng o

f 40

0kV

Rai

chur

-M

unira

bad

line

10/9

/201

4 a

t 14:

03 h

rslin

e tri

pped

due

to o

pera

tion

of c

arrie

r loc

k ou

t rel

ayR

ecom

men

datio

ns:

KPC

L is

requ

este

d to

exp

edite

the

proc

ess o

f ins

talli

ng a

dequ

ate

DC

ba

tterie

s for

PLC

C sy

stem

.

KPC

LY

et to

be

info

rmed

Pend

ing

6837

/II/3

1340

0kV

Met

tur-

Ara

sur l

ine-

19/

29/2

014

at 2

1:10

hrs

line

tripp

ed d

ue to

Y-P

hase

to

ear

th fa

ult.

Line

did

not

au

to re

clos

e as

Aut

o re

clos

e sc

hem

e is

kept

in n

on-a

uto

mod

e.

·

A

/R is

not

in s

ervi

ce.

TAN

TRA

NSC

OY

et to

be

info

rmed

Pend

ing

6937

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1440

0 kV

NEY

VEL

I TS

2 (E

XP)

- PU

GA

LUR

10/5

/201

4 a

t 21:

47hr

sY

-pha

se to

ear

th fa

ult h

ad

occu

rred

in li

ne. L

ine

did

not

auto

recl

ose.

DT

was

re

ceiv

ed fr

om N

eyve

li TS

2(EX

P) e

nd

Hav

e to

subm

it re

med

ial m

easu

res

NLC

Yet

to b

e in

form

edPe

ndin

g

7037

/III/2

1540

0kV

Sris

aila

m-S

aten

apal

li-2

9/19

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4at

20:

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rs·

D.R

of S

risai

lam

end

not

subm

itted

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ENC

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et to

be

info

rmed

Pend

ing

9

Annexure-XX

Annexure-XXI (Page 1 of 2)

Annexure-XXI (Page 2 of 2)

Viol

atio

n Ty

pe a

nd C

ateg

ory

V

iola

tion

Type

R

ange

/ C

ondi

tion

Cat

egor

y

Freq

uenc

y V

iola

tion

>50.

1 H

z or

<49

.7 H

z Em

erge

ncy

50.0

5-50

.1 H

z o

r 49

.9 H

z -4

9.7

Hz

Ale

rt

49.9

Hz

-50.

05 H

z N

orm

al

Volta

ge V

iola

tion

> 42

5 kV

or <

380

kV

Emer

genc

y

415

kV -

425

kV

or

390

kV -

380

kV

Ale

rt

>390

kV

to <

415

kV

Nor

mal

Loa

ding

V

iola

tion

> Th

erm

al L

oadi

ng u

nder

n

-1 c

ontin

genc

y Em

erge

ncy

= T

herm

al L

oadi

ng u

nder

n-1

cont

inge

ncy

Ale

rt

< T

herm

al L

imit

unde

r n-

1 co

ntin

genc

y N

orm

al

Zero

Cro

ssin

g V

iola

tion

1 F

ailu

re (i

ssue

d 14

th ti

me

Blo

ck)

Emer

genc

y Is

sued

in 1

1th

time

bloc

k if

the

dire

ctio

n no

t cha

nged

fo

r 10

time

bloc

ks

Ale

rt

Zero

Cro

ssin

g do

ne w

ithin

10

time

Blo

cks

Nor

mal

Dev

iatio

n V

iola

tion

> 20

% o

r 250

MW

(w

hich

ever

low

er)

Emer

genc

y

12%

-20%

or

150

MW

to 2

50 M

W (

whi

chev

er lo

wer

) A

lert

<12%

or 1

50 M

W (

whi

chev

er lo

wer

) N

orm

al An

nexu

re-X

II (

Page

1of

5)

Annexure-XXII

Sum

mar

y of

Mes

sage

s Iss

ued

by S

RLDC

on

Real

-tim

e

( Ben

efic

iarie

s Jul

y 20

14)

VI

OLA

TIO

N

A

P T

G

KA R

KE R

TN

PON

DY

To

tal

DEVI

ATIO

N

Ale

rt

14

15

2 7

12

0 50

Em

erge

ncy

21

27

0 13

21

0

82

NC

1

5 0

3 1

0 10

FREQ

UEN

CY

Ale

rt

5 3

1 4

4 0

17

Em

erge

ncy

3 6

2 9

5 0

25

NC

0

0 0

0 0

0 0

LOAD

ING

Ale

rt

0 0

0 8

9 0

17

Em

erge

ncy

6 5

5 17

14

0

47

NC

0

0 1

0 0

0 1

ZERO

CRO

SSIN

G

Ale

rt

6 4

0 8

3 2

23

Em

erge

ncy

26

23

0 20

11

1

81

NC

5

7 0

5 1

0 18

VOLT

AGE

Ale

rt

2 2

0 1

1 0

6

Em

erge

ncy

2 2

1 4

1 0

10

NC

0

0 0

0 0

0 0

Tota

l

Aler

t 11

3

Emer

genc

y 24

5

NC

29

Annexure-XII (Page 2of5)

Annexure-XXII

Sum

mar

y of

Mes

sage

s Iss

ued

by S

RLDC

on

Real

-tim

e

( Ben

efic

iarie

s Aug

201

4)

VI

OLA

TIO

N

A

P T

S K

AR

KE R

TN

PON

DY

DEVI

ATIO

N

Ale

rt

6 17

0

8 16

0

Em

erge

ncy

11

23

2 12

24

0

NC

1

3 0

0 3

0

FREQ

UEN

CY

Ale

rt

0 0

0 0

0 0

Em

erge

ncy

6 9

0 14

11

0

NC

0

0 0

0 0

0

LOAD

ING

Ale

rt

0 0

0 5

6 0

Em

erge

ncy

2 3

2 8

10

0

NC

0

0 0

0 0

0

ZERO

CRO

SSIN

G

Ale

rt

9 11

0

22

4 1

Em

erge

ncy

17

19

1 16

9

0

NC

3

5 0

1 1

0

VOLT

AGE

Ale

rt

2 2

2 0

0 0

Em

erge

ncy

2 2

2 0

0 0

NC

0

0 0

0 0

0

Tota

l

Aler

t

11

0

Emer

genc

y

2

05

NC

17


Annexure-XXII

Sum

mar

y of

Mes

sage

s Iss

ued

by S

RLDC

on

Real

-tim

e

( Ben

efic

iarie

s Sep

t 201

4)

VIO

LATI

ON

A

PT

SK

AR

K

E R

TN

PO

ND

Y

DEVI

ATIO

N

Ale

rt

6 5

0 6

13

0

Em

erge

ncy

8 10

1

8 27

0

NC

0

1 0

1 3

0

FREQ

UEN

CY

Ale

rt

0 2

0 2

1 0

Em

erge

ncy

3 2

1 8

10

0

NC

0

0 0

0 0

0

LOAD

ING

Ale

rt

4 1

1 5

8 0

Em

erge

ncy

1 0

0 20

19

1

NC

0

0

0

2 2

0

ZERO

CRO

SSIN

G

Ale

rt

4 5

0 15

6

0

Em

erge

ncy

11

5 1

14

23

3

NC

1

2 0

2 3

0

VOLT

AGE

Ale

rt

6 5

6 0

5 0

Em

erge

ncy

1 1

1 0

0 0

NC

1

0 0

0 0

0

Tota

l

Aler

t

1

06

Emer

genc

y

175

NC

18


Annexure-XXII

Sum

mar

y of

Mes

sage

s Iss

ued

by S

RLDC

on

Real

-tim

e

( Ben

efic

iarie

s Oct

201

4)

VIO

LATI

ON

A

PT

SK

AR

K

E R

TN

PO

ND

Y

DEVI

ATIO

N

Ale

rt

8 5

3 21

13

0

Em

erge

ncy

6 10

4

18

36

0

NC

1

1 0

6 11

0

FREQ

UEN

CY

Ale

rt

5 4

2 8

7 1

Em

erge

ncy

5 2

0 12

5

0

NC

0

0 0

0 0

0

LOAD

ING

Ale

rt

2 0

1 0

7 0

Em

erge

ncy

5 7

0 2

26

1

NC

1

0

0

0 1

0

ZERO

CRO

SSIN

G

Ale

rt

3 3

2 12

4

1

Em

erge

ncy

14

14

0 21

26

7

NC

2

1 0

7 5

0

VOLT

AGE

Ale

rt

4 4

4 0

3 0

Em

erge

ncy

2 0

2 0

3 0

NC

1

0 0

0 1

0

Tota

l

Aler

t

1

27

Emer

genc

y

220

NC

38


Annexure-XXII

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