AGENDA NOTES FOR 479 - wrpc.nic.in479th OCC Agenda AGENDA NOTES FOR 479th MEETING OF OPERATION &...

479th OCC Agenda

AGENDA NOTES FOR 479th MEETING OF OPERATION & COORDINATIONSUB-COMMITTEE OF WRPC

TO BE HELD ON 12th JANUARY 2016 AT BHUJ HOSTED BY CGPL, MUNDRA

ITEM No. 1: CONFIRMATION OF THE MINUTES

Minutes of 478th meeting of Operation & Coordination Sub-Committee of WRPC held on

15th December 2015 at TAPS-3&4, Tarapur were forwarded vide letter No.

WRPC/OPN/OCC-Minutes/2015-16/10717 dated 22.12.2015.

No comment has been received. Sub-Committee may confirm the same.

ITEM NO.2: REVIEW OF SYSTEM OPERATION DURING THE MONTH OFDECEMBER 2015.

2.1 Frequency Particulars

The average frequency during the month of December, 2015 was 49.98 Hz. The

maximum instantaneous frequency was 50.32 Hz at 06:02 hrs on 6th December -15

while minimum instantaneous frequency was 49.59 Hz at 07:47 hrs on 30th December

-15. The frequency profile during December, 2015 was as under:

01st December 2015 to 31st December 2015 % time

IEGC band (49.9 < f < 50.05 Hz) 66.07

< 49.9 Hz 16.38

> 50.05 Hz 17.55

The frequency particulars is enclosed at Annex-2.1

The Sub-Committee may like to note.

2.2 INTER-REGIONAL EXCHANGES

There was a net inter-regional export of 5505.00 MUs by WR against net export

schedule of 4954.00 MUs.

The Sub-Committee may like to discuss.2.3 Voltage Profile

Voltage profile at some of 765/400 kV sub-stations during the month of December

2015 furnished by WRLDC is enclosed at Annex-2.3.

The Sub-Committee may like to discuss.

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2.4 U/F Relay Operations

As per WRLDC records during December 2015 the system frequency didn’t touch 49.2

Hz and no UFR operation has been reported by WRLDC.

The Sub-Committee may kindly note.

2.5 Power Cuts / Load Restrictions

Details of Power Cuts and Regulatory measures during December 2015 as furnished by

the state utilities are given in Annex. 2.5.

The Sub-Committee may note.

2.6 Details of Generating Units under Forced outages

Details of generating units under forced outages during December 2015 are given inAnnex-2.6.

The Sub-Committee may discuss.

2.7 Details of Generating Units under Planned outages

The details of generating units under Planned Outages during December 2015 are givenin Annex-2.7

The Sub-Committee may discuss.

ITEM NO.3: OPERATIONAL PLANNING

3.1Proposed Planned maintenance programme of generating units.

The maintenance programme of generating units for the months January 2016 &February 2016 is given in Annex 3.1.

The Sub-Committee may discuss and finalize the outage schedule of generatingunits for the above period.

3.2 OUTAGE PROGRAMME OF TRANSMISSION LINES/ELEMENTS

Maintenance programme for transmission lines during the months January 2016 &February 2016 is given in Annex 3.2.

The Sub-Committee may discuss and finalize the maintenance programmeproposed above.

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479th OCC Agenda

3.3 ANTICIPATED POWER SUPPLY POSITION FOR THE MONTHS – JANUARY2016 & FEBRUARY – 2016

Details of anticipated restricted & un-restricted demands for the months of January 2016

& February 2016 are given in Annex 3.3.

Constituents may furnish the anticipated station wise Availability & Energy for the months

of January 2016 & February 2016.

The Sub-Committee may like to note/update.ITEM NO. 4: OPERATIONAL STATISTICS FOR THE MONTH OF DECEMBER 2015

The details of actual generation, demand, drawl of power from grid; exchanges etc.

are given in the following Annexures:

Annex 4.1 - Actual Generation and Requirement for December 2015.

Annex 4.2 - Peak Demand: Schedule Vs Actual for December 2015.

Annex 4.3 - Integrated Operation of the System and Operation of Inter State Tie lines

for December 2015.

Annex 4.7 – Details of level of Major Reservoirs in Western Region for December

2015.


ITEM NO. 5: SYSTEM DISTURBANCES IN WESTERN REGION

There was no major grid disturbance in the Western Region during the month of

December 2015. However the details of minor incidences during the month received

from WRLDC are enclosed at Annexure-5.The Sub-Committee may like to note/discuss.

ITEM NO. 6: Healthiness status of SERs/DRs of equipment in the system.

Constituents have furnished the status of healthiness of SER/DRs in their systems onthe dates below:

Sl No. Name ofconstituents

Date of Receipt

1 PGCIL,WRTS-I 04.01.20162 PGCIL,WRTS-II 04.01.20163 MPPTCL 03.01.20164 NTPC 04.01.20165 CSPTCL 04.01.20166 GETCO 04.01.20167 MSETCL 05.01.2016

The sub-Committee may like to note.

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ITEM NO. 7: STATUS OF COMPLETION OF ONGOING SCHEMES FORCOMMISSIONING OF REACTORS, TRANSMISSION LINES ANDGENERATING UNITS IN WR.

7.1 Status of completion of ongoing Schemes for Commissioning of reactors in2015-16.

S.No.

400 kVSub/stn.

Size(MVAR)

Implementingagency

Expected commissioningdate

1 Nanded 125 MVAR MSETCL June – 2016

2 Sholapur 125 MVAR MSETCL June – 2016

3 Kolhapur 125 MVAR MSETCL June – 2016

4 Akola 125 MVAR MSETCL June – 2016

*5 Nagda 125 MVAR MPPTCL January – 2016

6 Bhopal 80 MVAR MPPTCL Commissioned on 27thAugust 2015

7 ISP 125 MVAR NHDC January – 2016

8 Line reactorat Nagda-ISPline at Nagdaend

50MVAR MPPTCL March 2016

11 Satpura 50 MVAR MPPGCL April-2016

12 Sasan Busreactor

240 MVAR RELIANCE Commissioned on 23rd May-2015

*50 MVAR existing bus reactor to be shifted to Nagda-ISP line as line reactor aftercommissioning of 125 MVAr reactor at Nagda.

Utilities are requested to ensure that reactors are installed and commissionedaccording to the schedule agreed as above.

The WR utilities may intimate the current status on above.

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479th OCC Agenda

7.2 STATUS OF COMPLETION OF 765/400 KV AND ABOVE ONGOINGTRANSMISSION SCHEMES BEING EXECUTED/IMPLEMENTED BYTRANSMISSION AGENCIES.

The updated status on various ongoing transmission schemes for the current year as

per the current information available is as follows: -

S.No.

Name of the Line TargetCompletionDate

Remarks

POWERGRID1 400 kV Navsari – Kudus D/C Line Jan -16 ROW/Forest problem2 765 kV Gwalior - Jaipur line -I

765 kV Gwalior - Jaipur line -I ICommissioned on 13.08.15Commissioned on 11.08.15

3 765 kV Dharamjaygarh - JabalpurPooling Station D/C line

Ckt-1 Commissioned on15.10.15Ckt-2 Commissioned on14.10.15

4 765 kV Wardha –Nizamabad-Hyderabad D/C

March-16

5

765 kV Narendra-Kolhapur D/C

Ckt-I commissioned on19.11.2015 at 400kV.Ckt-II commissioned on11.12.2015 at 400kV.

6 400 kV Aurangabad - Boisar line D/Cline

Jan -16

7 765 kV Aurangabad (PG) - Padghe(PG) D/C

Jan -16

8 800kV Champa – Kurukshetra Bipole Jan -169 765 kV Aurangabad- Solapur D/C

lineCommissioned on07.10.2015 at 400kV.

10 LILO of both circuits of Aurangabad –Pune 400 kV D/c line at Pune765/400 kV GIS

Jan -16

11 400 kV Parli-Pune(Sikarapur) LILO atSikarapur

Commissioned on24.02.2015

12 765 kV Raipur – Champa765 kV Raigarh – Champa

Commissioned on 28.05.2015Commissioned on 29.05.2015

13 765 kV Indore-Vadodara Commissioned on05.06.2015

14 400 kV Vadodara-Asoj Commissioned on27.06.2015

15 400 kV Vadodara-Pirana Commissioned on27.06.2015

16 765kV Dharmjaigad-Rachi-II Commissioned on12.10.2015

17 400 KV Solapur(NTPC)-Solapur(PG)ckt-I

Commissioned on10.07.2015

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18 765 kV Aurangabad-Solapur D/C Commissioned on30.09.2015

19 400 KV Vindhyachal Pooling-VSTPS(NTPC)

Commissioned on30.09.201519.10.2015

CHHATTISHGARH1 400 kV Korba west- Marwa

400 kV Marwa- KhedamaraCommissioned on28.05.2015

2 400 kV DCDS Raipur(Raita)-Jagdalpur(DCDS)

Mar- 2016

3 220 kV DCDS lines Chhuri to Mopka(Bilaspur), (DCDS)

Ckt-I Commissioned on08.11.2015. Ckt-IIcommissioned on02.12.2015

4 LILO of 220 kV Raigarh-Budipadar at400 kV PGCIL S/s Raigarh. Idealcharged on 11.8.2015 for no theftreason

Jan -16 Under discussion withOrissa and ERLDC,beingtaken up by WRPC

5 LILO of 220 Korba (E)- Bishrampurline at 220 kV Churri S/s

Commissioned on26.04.2015.

GUJARAT1 400 kV D/C Mundra-Zerda line No. 1 March -162 400 kV D/C Mundra-Zerda line No. 2 Jan -163 400 kV D/C Vadinar-Amreli line March -164 400kV APL-Hadala LILO to Halvad March -165 400 kV D/C Amreli-Kasor line(Part-1) March -166 400 kV Charanka- Veloda March -167 400kV Varsana-Hadala Jan -16MADHYA PRADESH1 Satpura TPH-Ashta 400KV DCDS

Line1st ckt commissioned on30th March 2015.2nd ckt – expected by Nov2015.

MAHARASHTRA(STU)1 400KV D/C line from Koradi-(II) to

Wardha S/S(PG) D/CJan -16 7.5 km stringing is balance

2 LILO of 400 kV Chandrapur-Parli atNanded

Jan -16

3 2x1500 MVA 765/400 kV, ICTs atEktuni

Jan -16

4 400 kV Bableshwar-Kudus D/C(Quad) August -16

5 765 kV Akola(II)-Ektuni -2 (charge at400kV at Tapthithanda)

Charge at 400kV atTapthithanda on 20.05.2015

6 400kV IEPL-Warora Jan -16 Line completed, legalissues being resolved

GUJARAT (IPTC route) by WRTransmission (Guj) Pvt. Ltd1 400 kV Rajgarh(PG)-Karamsad

(GETCO) D/CJan -16 Letter written to concerned

agency

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STERLITE (JTCL)1

765 kV Dhramjaygarh - Jabalpur (JTCL)D/C line ckt 3 & 4.

Ckt-I Commissioned on12.09.15Ckt-II Commissioned on13.09.15

2 765 kV Jabalpur - Bina (JTCL) S/c Charged on 30th June 2015.3 400 kV Sujalpur-Kota(IR by RTCL) Jan -16STERLITE (BDTCL)1 765 kV Vadodara - Dhule (BDTCL) S/C Charged on 12th June 2015.2 765 kV Bhopal- Jabalpur Charged on 8th June 2015.3 765kV Bhopal – Jabalpur Charged on 8th June 2015.4 400 KV Dhule (BD)-Dhule (MS) Jan -16 Bay completed. SCADAErection in progress


7.3 Commissioning of new Generating units in Western Region and thecapacity expected to be commissioned during the current year 2015-16.

The status regarding Generating units, commissioned /expected to be commissionedduring the current year 2015-16 according the available information is as below:

Name of the Power Projects Unit No. Capacity(MW)

Date of Commissioning/Schedule Date

GUJARATSIKKA TPS EXT 3 250 COD-17.09.2015

SIKKA TPS EXT 4 250Dec-15, First time Synchdone

CHHATTISGARHMarwa 1 500 January 2016

2 500 March 2016MAHARASHTRACHANDRAPUR 8 500 Jan -16

CHANDRAPUR 9 500 Feb- 2016KORADI 8 660 Jan-16KORADI 9 660 Jan- 2016KORADI 10 660 March -2016

PARLI 8 250Jan - 2016 (Subject toavailability of Water)

MADHYA PRADESHM/s Jhabua Power, Seoni 1 600 Jan -16

Moser Bear (Hindustan power) 2 600 Jan -16Essar Power MP Ltd(Mahan) 2 600 Jan -16CENTRAL SECTOR/IPPVINDYACHAL 13 500 COD on 30.10.2015KSK 3 600 March – 2016

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479th OCC Agenda

KSK 4 600 June – 2016SASAN 6 600 COD on 27.03.2015

ACBIL(Maruti) 1 300Commissioned on17.04.2015

RKM 1 360

Commissioned on28.02.2015, COD –27.11.2015

RKM 2 360 March 2016RKM 3 360 May 2016

RKM 4 360 August 2016BALCO 1 300 COD on 11.07.2015BALCO 3 300 COD on 28.11.2015


ITEM NO. 8: MISCELLANEOUS OPERATIONAL ITEMS

ITEM NO. 8.1: QUARTERLY REVIEW OF CRISIS MANAGEMENT PLAN

All the constituents are requested to submit the CMP report for the Third quarter

(October 2015 to December 2015) for the year 2015-16.

The Sub-Committee may like to note and furnish details in respect of above.

ITEM NO. 8.2: STATUS OF PHYSICAL & CYBER SECURITY IN POWER SECTOR

Status of physical & cyber security in Power Sector for the Third quarter (October 2015

to December 2015) for the year 2015-16 have not been received from some of the

constituents.

The Sub-Committee may like to note and furnish details in respect of above.

ITEM NO. 8.3: READINESS OF SLDC AT GOA, OTHER SLDCs AND WRLDC FORUPGRADATION OF EXISTING SCADA/EMS SYSTEMDuring 29th WRPC meeting it was decided that the status of progress of SLDC’s &

Back-up SLDC’s of WR constituents /WRLDC would be regularly monitored in monthly

OCC meeting.

Further during the meeting WRLDC informed that WRLDC portion of contract has

been amended for time extension up to 31.03.2016 and requested Alstom to complete

the project by schedule completion date i.e. by 31st March 2016. In a clarification for

SLDCs portion of contract, POWERGRID WR-II representative has also informed that

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479th OCC Agenda

time extension up to 31.03.2016 for state portion has also been approved and

necessary amendment has been issued.

The matter was discussed during 30th TCC/WRPC meeting and WRTS-II, PGCIL has

been assigned the role to coordinate & sort-out the issues at the earliest for timeline

implementation of project with states & LD&C division of PGCIL.

WRLDC Intimated that the Project status submitted by the implementing agency and

discussed during 17th PRM on 9th October at Mumbai is furnished below.S.N. Utility Control

CentreSiteReadiness

SAT ICCPCommunication

SAVTHardware

Software

1. WRLDC Main CC Yes Done Done Done CompleteBackup CC Yes Done In Progress Done To be done by

December 15end

2. MPPTCL SLDCJabalpur

Yes Done Underprogress

Done To be startedon 18.12.2015

Sub-SLDCBhopal

Yes Done started on15.12.2015

Done To be startedon 25.12.2015

Sub-SLDCIndore

Yes Done In progress Done To be startedon 25.12.2015

3. GETCO SLDC Gotri Yes Done EMS Underprogress

Done To be startedafter EMS

functionalitydone

Sub-SLDCJambua

Yes Done EMS Underprogress

Done To be startedafter EMS

functionalitydone

Sub-SLDCJetpur

Yes Done Underprogress

Done Not Started

BackupSLDCGandhinagar

Yes Done Not Started DoneNot Started

Sub-SLDCGandhinagar

Yes Done Done Done Not Started

4. CSPTCL SLDC Raipur Yes Done Done Done CompleteBackupSLDCKhedamara

Yes Inprogress

to beshiftedfrom

Raigarh

In progress To betested

Not Started

5. GOA Main CC No NotStarted

Not Started NotStarted Not Started

Backup CC Yes Inprogress

Not Started Done Not Started

6. DDED Magarwada Yes Done Done Done To be StartedDec end

7. DNHED Silvassa(buildingready)

Yes NotStarted

Not Started NotStarted Not Started

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479th OCC Agenda

GOA Status:CEE, Goa Electricity Department vide Email dated 01.01.2016 submitted the status of

progress. Work was to start on 27/12/2013. He informed that work will resume on 7th

Jan 2016 after SAT at Cuncolim.

DD Status:DD informed that a joint site visit was carried out along with representatives from M/sPOWERGRID INDIA LTD., ALSTOM NOIDA and DDED Magarwada to check thereadiness of scada system to start SAVT(1000 hr test) where in following points werediscussed.

1) SCADA SAT were conducted from 25.08.2015 to 01.09.2015, from the SATReport it is observed that some of the tests are pending to be conducted atSLDC Magarwada. Powergrid requested to take immediate action tocomplete the pending tests before start of SAVT.

2) The RTU data of 220 kV Magarwada SS is reporting to SLDC SCADAsystem. It is observed that only Analog data and isolator Status is reportingto SCADA system however all CB Status is found suspected. The sameneeds to be checked and resolved prior to SAVT.

3) UPS Monitoring PC is yet to be installed due to non availability of CPU atSite. M/s Alstom informed that the CPU received earlier at MagarwadaSLDC was sent back to Noida for necessary replacement. The same is yetto be received. Powergrid requested to M/s Alstom for taking necessaryaction for replacement of the same within 7 days.

All the constituents are requested to update the status.

ITEM NO. 8.4 GENERATION TARGET FOR THE YEAR 2016-17 IN WESTERNREGION.

A meeting will be conducted by CE, OPM Division CEA, New Delhi on 22.01.2016 at

WRPC, Mumbai. All the WR generators were requested to attend the same with

necessary information/data.


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479th OCC Agenda

ITEM NO. 8.5 SHEDULING FOR NTPC JHANOR GPP FOR GGF GASUTILISATION.

GM, NTPC informed that the Jhanor gas station is under close reserve due to less /no

requisition from beneficiaries constituents. This is resulting in non utilisation of GGF

Gandhar gas field gas. Due to non-availability of generation schedule, the station is

not able to draw any ONGC’s South Gujarat gas from GAIL which can only be taken at

Jhanor Gandhar GPS. The gas suppliers are compelled to flare gas due to low off take

by consumers.

GAIL has stated that if this situation continues, they would be constrained to raise

Take-or-Pay clause in line with the contractual obligations. The GGF is in APM

category which is the cheapest gas in the country, any shortfall in its drawl may lead

the Govt. to reduce allocation of the same.

The matter was discussed in 28th WRPC meeting dated 04.03 2015, the utilisation of

the GGF was in principal agreed and constituents were advised to give schedule

accordingly.

In view of above, it is requested that sufficient generation schedule may be given to

Jhanor-Gandhar station so that the station can operate at least at its technical

minimum load (149 MW) in combined cycle mode and can draw the committed gas

from GAIL to avoid Take-or-Pay situation.

M/S GAIL is likely to invoke take or pay clause and such amount will have to be

loaded to fuel cost to be recovered from beneficiaries.

The matter was discussed in 478th OCCM, minutes recorded are as under:

Quote:“Madhya Pradesh and Gujarat agreed to take up the power to technical minimum as

per their share.

CE, SLDC Maharashtra stated that for scheduling of NTPC Gandhar power, they need

to take permission from MAHADISCOM.

Member Secretary, WRPC advised Maharashtra to take up the matter with their power

purchase team of Discom and resolve the matter soon. He also advised for the

inclusion of Mahadiscom representative as special invitee in OCC forum for

commitment on behalf of Discom for various operational matter where SLDC was

unable to commit. He has also suggested that if any beneficiary schedules more

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479th OCC Agenda

power, other beneficiaries can schedule proportionately less power to meet at least

technical minimum schedule of 149MW.”

Unquote:Matter was taken up with Director(MSEDLC) for view on scheduling of Gandhar G/S

The consent and reply from MSEDCL is still awaited. It is prudent to mention that all

the beneficiaries are advised to give the consent and ensure at least technical

minimum schedule 149 MW by taking /requisitioning their share for one GT at Jhanor.

This may be noted by all constituents that GGF, if it is left un-requisitioned then Take

or Pay liability will be to all the beneficiaries as per their entitlements, hence

scheduling for running of unit is to be ensured by all.

Financial Implication of GGF under utilisation on account of ToP, for FY 2014-15 is

around approximately Rs 36 Cr and for FY 2015-16 Till Dec 2015 is 27 Cr.

It is again requested that Maharashtra, DD, DNH and Goa may submit consent for

scheduling and consumption of GGF.


ITEM NO. 8.6 SCHEDULING OF NTPC STATIONS DURING NIGHT/OFF PEAKHOURS.

GM, NTPC informed that NTPC stations are facing difficulties in operation of it’s

Vindhaycal/Sipat/Mouda/ units below technical minimum level of schedule. Schedule

being very low during night hours (Much below technical minimum level ) and full

schedule for units during day hours.

Requisitions from constituents is ranging from 0 to 100% .This is causing unintentional

over injection during night hours ,also very low schedule below technical minimum,

resulting in unsafe and unstable operation. The issue of technical minimum schedule

was well deliberated in various forums of OCC/TCC/WRPC meetings and were in

principle agreed by all the beneficiaries for the same. All the beneficiaries are once

again requested to provide TM schedule during OFF peak hours.

Background:1. It was agreed in 28th WRPC meet that for units, whose power are requisitioned

during peak hours, at least technical minimum schedule will be provided during off-

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479th OCC Agenda

peak hours to keep running units on bar. For this, beneficiaries agreed to take at least

30% share of their entitlement through their day ahead original requisition.

2. It was also decided that if technical minimum schedule is not provided, NTPC can

take unit under RSD with prior intimation to beneficiaries. The unit taken under RSD

shall remain off bar for at least 72 hrs.

3. After withdrawing unit on RSD, it is expected that constituents will ensure technical

minimum schedule for units remaining on bar. Also, to ensure that schedule shall not

go beyond 'on bar DC' during this RSD period, it is necessary to restrict maximum

schedule up to 'on bar DC'. For this purpose, WRLDC changed scheduling procedure

and started to consider 'on bar DC' instead of 'total DC' for scheduling so that

schedule will not cross 'on bar DC' even if all beneficiaries are taking their shares to

full.

Concerns:1. If schedule is less than technical minimum and any unit (s) is taken under RSD by

NTPC, we have to revise our DC and reduce on bar DC as per the number of running

units.

2. Based on our reduced on bar DC, WRLDC considers new entitlements of

beneficiaries which are further reduced, so revised schedule is getting reduced and

which again comes below technical minimum for units remained on bar. Hence, the

problem of less than technical minimum schedule continues even after taking unit

under RSD.

Suggestions:1. WRLDC may consider full entitlement (i.e. based on total DC) for schedulingpower to beneficiaries and also, restrict NTPC schedule to 'on bar DC'.Note: While availing this total entitlement, beneficiaries will be allowed to take powerup to their full entitlement and shall not be charged the additional fixed cost as it is

being charged for URS allocation from .

To restrict schedule up to on bar DC, any of the following mechanisms can beadopted.

a) Once schedule equals 'on bar DC', WRLDC may not allocate additional power

w.r.to subsequent revisions of beneficiaries. (First come, first serve criterion may be

followed).

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479th OCC Agenda

b) If sum of requisitions by beneficiaries is more than on bar DC, schedule may be

reduced to on bar DC with allocation of powers using pro-rata calculations based on %

shares of beneficiaries.


ITEM NO. 8.7. MOUDA UNIT-2 SCHEDULE FOR PG TEST.

GM, NTPC informed that Mouda Unit#2 PG test for Turbine & Boiler is pending due to

non availability of stable injection Schedule for Mouda units. It is proposed that the

PG test at Mouda unit no 2 can be planned for 7 days in the month of January /Feb

2016. The BHEL PG test equipment / instruments are available at site hence the dates

may please be confirmed for the same.

The Sub-Committee may like to discuss.ITEM NO. 8.8. CGPL STATION/UNIT RAMP RATE FOR DAILY DISPATCH OF

POWER:ED & CEO, CGPL Mundra informed that Costal Gujarat Power Limited (CGPL),

Mundra has entered into a long term Power Purchase Agreement (PPA) on 22nd April

2007 with 07 (seven) Procurers namely GUVNL, MSEDCL, AVVNL, JVVNL, JDVVNL,

PSPCL & HPGCL for a Contracted Capacity of 3800 MW (5 Units @ 760 MW each)

for a period of twenty five years.

It is submitted that CGPL has been declaring the day ahead Capacity (DC) along with

ramp up/down rate @60 MW per time block per Unit since its Commercial Operation

(300 MW for all the five Units when in Operation). During the operations (plant

performance analysis), it is observed that there are major / large deviations in its vital

operational parameters. An attempt was made to analyze the deviations through in-

house experts but could not able to establish proper reason attributable for such

deviations. Finally, matter was referred to M/s Doosan Heavy Industries &

Construction Co. Ltd., being the Original Equipment Manufacturers (OEM) for its

review and for remedial measures, if any. After detailed analysis, it is intimated (by

OEM) that ramp rate is required to be maintained at with 1-1.5 MW per minute per

Unit. Further, it is stated that ramp rate should not exceed 2 MW per minute per Unit

(maximum ramp rate) in order to maintain the useful life/normal health of the plant.

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479th OCC Agenda

Also, it is indicated that the above referred ramp rate is operationally feasible. Under

the above circumstances, it is not operationally reasonable for CGPL (an ISGS) to

operate the Unit at the existing ramp rate of 60 MW per time block per Unit.

Further he requested that kindly consider the above (OEM recommendation) ramp

rate of 2MW per minute per Unit or 30MW per time block per Unit(maximum) and

implement the same w.e.f. 00.00 Hrs. (First time block) of 31st December 2015. This

would not only protect the useful life of the plant/Power Station but also help in

uninterrupted supply of power to the consumers of five states.


ITEM NO. 8.9 DEFERMENT OF LINE SHUTDOWN OF NTPC KORBA-BALCOLINE-1 FEEDER

GM (Project), Balco intimated vide letter 05.01.2016 that due to the non-completion of

its 400kV double circuit permanent transmission line BALCO cannot sustain Line

shutdown of NTPC, Korba-BALCO circuit (Line-1).

BALCO has got single point connectivity with Grid through LILO line only and with

Shutdown of its NTPC,Korba-BALCO circuit (Line-1), complete BALCO plant cannotbe sustained on other circuit (BALCO-Birsinghpur, Line-2) on account ofovervoltage.

The following jobs are pending towards completion of the permanent transmission

line:

1) Stage-1 clearance from MOEF-Climate Change, Nagpur

2) Construction start permission from competent authority.

3) Completion of balance work in Forest area.

4) Changeover from LILO line to permanent line.

He further intimated that currently pending for its Stage-1 clearance at the Office of the

MOEF-Climate Change, Nagpur & expect to get it cleared by end of Jan’16 and

complete the balance transmission line activities by end of February’2016. Balco shall

be in a position to accommodate line shutdown during the LILO changeover period

expected in the first week of March’2016. Till that time, Balco sincerely urged to kindly

defer the shutdown of 400kV NTPC, Korba-BALCO Line (Line-1).


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479th OCC Agenda

ITEM NO. 8.10 Reactive Power Planning :In the 3rd NPC meetings it was decided that all States would carry out reactive power

planning not only at transmission level but also at distribution level and prepare

schemes to maintain voltage profile as per relevant Regulations/Standards. These

schemes would be forwarded by the States to the Power System wing of CEA under

intimation to NPC secretariat.

In the 4th NPC meeting held on 10.12.2015 at New Delhi, NPC decided that States

should adopt a proactive approach in the matter of reactive power planning, and that

the provisions regarding reactive power planning similar to those mandated in the

IEGC for CTU should be included in the respective State Grid Codes. Also it was

mandated to RPCs to follow up the matter further with the States.

State SLDCs may coordinate with States to get the reactive power planning done by

the States & intimate the status on the same.

The Sub- committee may like to discuss the same.

ITEM NO. 9: WRLDC ITEMS9.1Implementation of Revised SPS setting for WR-SR as advised by NLDC

AGM, WRLDC informed that prior to commissioning of 765 kV Aurangabad – Solapur

D/C, NLDC had advised revision in SPS setting vide letter number

NLDC/SR_Synch_SPS dated 7th Sept15 and corrigendum dated 26th Oct15. After

commissioning of 765kV Aurangabad-Sholapur D/c, CTU had released the additional

LTA/MTOA from WR to SR. Interim revision of SPS settings on WR-SR corridor was

advised by NLDC and implemented by POWERGRID on 7.9.2015.

After charging of 765 kV Kolhapur_GIS- Narendra D/C, TTC/ATC on WR-SR corridor

was further enhanced from 3200MW to 4000MW and additional LTA was

operationalized w.e.f 16th Dec15. NLDC has therefore advised vide its letter dated 23rd

Dec15 to expedite the implementation of SPS proposed on 7.9.2015.

The SPS revision intends to avoid frequent operation of SPS due to increased flow on

SR-WR links. However the revised setting is yet to be implemented. On 02.01.2015

the two instances of triggering of SPS could have been avoided.

The new SPS to be implemented and action to be taken by different utilities are

tabulated below:

17

479th OCC Agenda

SPSName

ProposedTriggeringcriteria for SPS(implemented)

SPS actionto be takenin WR

Actions by Powergrid Remark

SPS-8(Bothlines inservice)

Loss of 765kVAurangabad-Sholapur D/C linescarrying 2500 MW

Loss of import on765kV Aurangabad-Sholapur D/C sectionby more than 2500MW due to tripping ofthese lines.

800 - 1000MWgeneration forbacking downin WR to beidentified byWRPC andintimated toPGCIL forconnecting thenew signal.

Immediately extend this SPSsignal to generators identifiedfor 400kV Raipur-Wardha D/Cflow SPS 800MW Gen Backdown in WR: JPL-150 MW, JPLextn – 150 MW, KSK – 100 MW,LANCO – 100MW, DB Power –100 MW, KWPCL – 100 MW,BALCO – 50 MW, NSPCL – 50MWTrip bus reactors at 400kVParli,765kV Pune(PG)

As and whenthe newgeneratorsare identifiedby WRPC forbackingdown,POWERGRID shallchange/modify the signalaccordingly.

SPS-9 Tripping of 765kVAurangabad-

Sholapur any oneckt carrying

1250MW and above

Trip 240MVAR bus reactor at765kV Sholapur(PG) and

63MVAR at 400kVSholapur(PG) to get ready for

the next contingency.

Concerned utilities may apprise the status.

9.2Implementation of Revised SPS setting for WR-NR as advised by NLDC

AGM, WRLDC informed that after charging of 765 kV Gwalior – Jaipur D/C, NLDC had

advised revision in SPS setting vide letter dated 7th Sept15 and corrigendum dt 26th

Oct15.TTC/ATC on WR-NR corridor is revised to 7700/7200MW . CTU has released

the LTA/MTOA from WR to NR. During the WRPC meeting following actions was

decided

POWERGRID: To extend the SPS signal from Agra/Gwalior to Sasan which is

included in modified SPS.

Sasan: Wiring within station for implementation of backing down after receipt of SPS

signal

POWERGRID had informed that the extension of signal would require procurement of

equipment. Therefore it was decided that till the time signal is extended at Sasan the

quantum of backing down at VSTPS, KSTPS and CGPL shall be enhanced from

200MW,120MW and 180MW respectively to 330 MW each stations

POWERGRID, Sasan, VSTPS, KSTPS and CGPL may apprise the current status.

18

479th OCC Agenda

9.3 Frequent tripping of 765 kV Wardha-Aurangabad ckts

Name FromDate From To date To Reason reported

1 765kV Wardha-Aurangabad-2 03-12-15 19:59 04-12-15 7:11 Over-Voltage2 765kV Wardha-Aurangabad-2 04-12-15 20:02 06-12-15 9:18 Over-Voltage3 765kV Wardha-Aurangabad-1 05-12-15 20:50 07-12-15 8:13 Over-Voltage4 765kV Wardha-Aurangabad-1 11-12-15 17:01 12-12-15 7:14 Over-Voltage5 765kV Wardha-Aurangabad-2 25-12-15 2:58 25-12-15 4:28 Over-Voltage6 765kV Wardha-Aurangabad-2 25-12-15 21:49 26-12-15 6:35 Over-Voltage7 765kV Wardha-Aurangabad-2 27-12-15 23:57 28-12-15 5:49 Over-Voltage

8 765kV Wardha-Aurangabad-2 28-12-15 19:45 28-12-15 22:12

Tripped duringmanual opening

of 765 kVWardha-

Aurangabad-1

Tripping of 765 kV Wardha Aurangabad had occurred many time in November and

December 2015. In 478th OCCM POWERGRID had stated that the CSD relay of Line

Reactor of 765 kV Wardha-Aurangabad-2 & 4 at Wardha end would be commissioned

by January’16. However the same is yet to be done, so the LR of these lines cannot

be used as BR even when the line is out of service. In the meantime following actions

have already been taken:

The Over voltage setting of 765kV Wardha-Aurangabad ckt 3&4 at Aurangabad

was changed from 107% to 108% by POWERGRID on 24th Nov 15.

765/400/ kV ICT tap at Aurangabad were changed from 12 to 14 on 28th Nov

15.

2x50 MVAr LR of 400 kV Akola-Aurangabad D/C at Aurangabad end (which

were under prolonged outage since 27.04.2014) have been taken into service

on 03rd Jan and 04th Jan 2015 respectively.

On 28th Dec 2015, 765 kV Wardha-Aurangabad ckt-III was already open on high

voltage. Since the voltage at Wardha end continued to be high, instructions were

issued to hand trip 765 kV Wardha-Aurangabad ckt-1 and convert the 240 MVAr LR of

this line at Wardha end into Bus reactor. It was however noted that in the process 765

kV Wardha-Aurangabad-2 also tripped resulting a crisis situation wherein only one out

of four ckt remained in service with power flow of around 1700 MW. Further only one

out of two ckts of 400 kV Akola-Taptithanda-Bableshwar were in service carrying 600

MW. Immediate measures were taken to control O/V to prevent cascade tripping by

19

479th OCC Agenda

hand tripping one ckt of 765 kV Durg-Wardha D/C and one ckt of 765 kV Seoni-

Wardha D/C. Thereafter 765 kV Wardha-Aurangabad ckt-2 was restored after a gap of

around 2 and half hours.

Detailed analysis of the event with the help of DR/EL and SCADA SoE indicated that

the although the voltage at Wardha/Aurangabad reduced when ckt-1 was hand tripped

but the O/V relay of ckt-2 had picked up and tripped this ckt after the set time delay of

6 seconds. It may thus be inferred that the undesirable tripping of the 765 kV Wardha-

Aurangabad ckt-2 could have been avoided with a higher drop off to pick up ratio in

numerical relays at Aurangabad end. It is also learnt that the O/V settings of the two

ends are as under:

Ckt

No.

Stage-I setting at

Wardha end

Stage-I setting at

Aurangabad end

Switchable

LR at

Wardha end

Tower

configuration

O/V setting Time

Delay

O/V

setting

Time

Delay

I 109% 5 107% 5 Yes D/C tower-1

II 109% 6 107% 6 No

III 109% 7 108% 7 Yes D/C tower-2

IV 109% 8 108% 8 No

Usually during night hours ckt-2 and ckt-4 are kept in service. LR of ckt-1 and ckt-3 at

Wardha end are used as Bus Reactors. Thus 765 kV Wardha-Aurangabad ckt-1 and

ckt-3 are generally kept open during night hours and the LR at Wardha end are

utilized as BR. POWERGRID also insists on keeping one ckt of each D/C to be in

service to prevent theft. However from the over voltage setting it is noted that the time

delay in the overvoltage setting of ckt-1 at Aurangabad is lower than the ckt-2.

Likewise the time delay in the overvoltage setting of ckt-3 at Aurangabad is lower than

the ckt-4. It is suggested that the time delay of ckt-2 may be kept higher than ckt-1 and

ckt-3 may be higher than ckt-4 to reduce the chance of tripping of the ckts which are

generally kept in service.

POWERGRID may apprise the OCC regarding following issues:

Possibility of increasing the Drop off to Pick up Ratio in the Micomnumerical relays at Aurangabad end

20

479th OCC Agenda

Possibility of Installing separate O/V relay with high drop off to pick upRatio

Revising the O/V setting to have higher setting in ckt-2 and ckt-4

Reason for higher Y Phase 765 kV Voltage as compared to other twophases.

9.4Computation and independent monitoring of Maharashtra drawal at SLDCKalwa for cross verification of drawal computed at WRLDC

AGM, WRLDC informed that in the absence of telemetry from large number of stations

from Mahrashtra, the drawal computation is being done with the help of telemetry from

POWERGRID stations. SLDC Kalwa also uses the same points for computation and

monitoring its drawal. In the absence of independent calculation of drawal at SLDC-

Kalwa, detection of discrepancy in drawal computation at SLDC and WRLDC

becomes difficult when telemetry from one or more points of POWERGRID end is

non-current. All the SLDCs except Maharashtra are computing their drawal

independently and highlighting the discrepancy if any in real-time itself.

The operator actions based on real-time telemetry have commercial implications and

hence redundancy in computation of State drawal from grid at each drawal point is

essential.

SLDC Kalwa may make suitable arrangement to start independent computationof drawal as being done by other SLDCs.

9.5Telemetry issues from Maharashtra Stations

AGM, WRLDC informed that telemetry issues from Maharashtra Stations have been

flagged in various WRPC / OCC meetings (since Dec’13). However, comprehensive

solution of the pending issues is lacking despite assurance from SLDC/STU MSETCL.

These are posing constraints in outage coordination of EHV elements and real-time

operation. In case of contingencies, the lack of telemetry leads to delay in system

restoration. The present status of telemetry in Maharashtra is tabulated below:

21

479th OCC Agenda

Number ofstationswhose

telemetryshould be

available atWRLDC

Number ofstationswhose

telemetry isnot

integrated inWR-SCADA

Number ofstations whose

telemetry isintermittent /

unreliable

% observability ofstations underjurisdiction ofMaharashtraSTU/SLDC

at WRLDCA B C (A – (B+ C)/A

GeneratingStations 32 0 4** 87.50%

765/400 kVTransmissionSubstations

17 3* 4*** 58.88%

220 kVTransmissionsubstations

178 8 58 62.92%

Total 227 11 66 66.07%*Warora, Chandrapur(ii), Lonikhand(II)** Jaigarh, trombay, Koyna, Deepnagar*** Bableswar, nagothane, Khapakheda, Khargar

SLDC-Kalwa / MSETCL representative may apprise the progress.

9.6Frequency Response Characteristic of Generators in WR

AGM, WRLDC informed that during the special meeting held on 27-Nov 15, it was

decided to analyse the frequency response from bigger size stations such as

Vindhyachal, Sipat, Korba, CGPL-Mundra, APL Mundra, Sasan, Tiroda and Jindal

Power (Tamnar).

Accordingly in the 478th OCCM the FRC of the above generating stations for the

events on 26-Oct’15 and 12-Nov’15 was explained by WRLDC. It was observed that

the response from CGPL, Sasan, APL Mundra-1, APL Mundra-2, APL Mundra-3,

APML Tiroda, JPL Tamnar, VSTPS-1, VSTPS-3 was NIL.

NTPC stated that RGMO is not in service in VSTPS-1 (6x210MW). NTPC has also

submitted the droop settings for their Stations except Mouda.

Utilities may inform status of compliance to IEGC 5.2(f).

Adani Power may inform regarding actions taken at Mundra-stage 1, Mundra

Stage-2, Mundra-Stage 3 and APML Tiroda

JPL Tamnar, CGPL and Sasan may inform the actions taken

NTPC may inform regarding CERC order exempting VSTPS-1 from RGMO

NTPC may inform actions taken at VSTPS-3

22

479th OCC Agenda

9.7Healthiness of Tertiary Reactors in Western Region

AGM, WRLDC informed that as per the information with WRLDC, following Tertiary

Reactor are available in Western Region & installed on the 33 kV tertiary winding of

400/220/33 kV ICTs

Sl.No. Substation

OwnerAgency

ICTsMVA

TertiaryReactordetails

(MVAR)

RatedVoltage in

kV

Net MVARcapacity

1 Bina MPPTCL 3x315 2 x 25 33 502 Nagda MPPTCL 3x315 2 x 25 33 503 Indore MPPTCL 4x315 2 x 25 33 504 Bhopal MPPTCL 3x315 2 x 25 33 505 Satpura MPPTCL 1x500 2 x 25 33 506 Parli MSETCL 2x315+1x500 3 x 30 33 907 Jabalpur PGCIL 2x315 2 x 25 33 50

Sub Total(MVAR) 390

Following information may be shared for operation purpose.

a) Healthiness of above tertiary reactors

b) Facility for online switching of these reactors

c) Status of new tertiary reactors installed / commissioned on the any new ICTs

9.8Prolonged Outage of Bus reactor and Line Reactors on EHV Lines

AGM, WRLDC informed that several EHV lines are tripping on over voltage and

various lines are being manually opened for voltage regulation. In order to control high

voltage, availability of Bus Reactors and Line Reactors at EHV substations need to be

ensured. As per the information, following reactors of 400kV Stations are under

prolonged outage.

S.No Element Name Type OwnerOutageDate Reason

1 Seoni 50 MVAR B/R-II BR PGCIL 27-08-15 AMP WORKS

2Satna-Vindhyachal-3 50MVAR LR@Satna LR PGCIL 05-11-15 Fire in L/R

3Khandwa-Seoni-1 80MVAR LR@Khandwa LR PGCIL 13-11-15

LR Buchloze relay oprtedat Khandwa

4 Bina-PG (63MVAR) BR BR PGCIL 22-11-15

Commissioning of125MVAr and replacing63Mvar

5 Solapur(PG) (63MVAR) BR BR PGCIL 21-12-15 CSD commissioning

6Parli(MS)-Lonikhand(New)-250MVAR LR @PARLI LR MSETCL 30-10-15 Fire Accident in L/R

7Chorania (GETCO) -CGPL-163MVAR LR @ Chorania LR GETCO 03-12-15

Reactor REF/backupimpedance prot. optd.

Respective utilities may update the status.

23

479th OCC Agenda

9.9UNDER VOLTAGE LOAD SHEDDING SCHEME (UVLS) IN WESTERN REGION

AGM, WRLDC informed that the need for Under Voltage Load Shedding Scheme

(UVLS) has been discussed and emphasized in various OCCM forums. UVLS is not

meant for routine voltage control. It is a part of defense mechanism similar to UFR

schemes. UVLS would help in preventing voltage collapse in the grid in case of

multiple contingencies occurring due to bus fault or cascade failure.

In 478th OCCM CE, SLDC Maharashtra had stated that UVLS schemes at Lonikhand,

Bableswar, Padghe and Jejuri (with trip setting at 370 kV) would be implemented by

end of Dec’15.

SLDC Maharashtra and SLDC Gujarat may appraise the progress. SLDC M.P.and SLDC Chattishgarh may also review and identify the critical load centresaround which UVLS could be implemented.

9.10 Mock Black Start Exercise in Western Region

AGM, WRLDC informed that as mandated by IEGC, the Black start capable units

need to conduct mock black start exercises once in every 6 months. Western Region

has 29 generating stations with black start capability. As per the information available

with WRLDC, 14 Black Start Mock exercises have been completed in the year 2015.

CLPIPL gas power plant has conducted twice as per IEGC mandate.

List of Mock drill exercise conducted in 2015

Sl.No Generating station Date of mock drillexercise doneSubstations

InvolvedMax Load servedin Island /Remark

1 Kadana, Gujarat 19th Feb, 2015 1 1 MW

2 CLPIPL, Gujarat 6th Feb, 2015 1 2.5 MW

3 Hasdeo Bango,Chattisgarh 17th May, 2015 4 15 MW

4 Khopoli,Maharashtra 23rd Aug, 2015 1 24 MW

5 Bansagar (Tons),Madhya Pradesh 6th Oct, 2015

4 45 MW

6 Bargi,Madhya Pradesh 12th Oct, 2015 3 24 MW

7 Pench, MadhyaPradesh 6th Nov, 2015 4 10 MW

8 CLPIPL, Gujarat 17th Nov, 2015 1 2.5 MW

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479th OCC Agenda

Sl.No Generating station Date of mock drillexercise doneSubstations

InvolvedMax Load servedin Island /Remark

9 Kawas, Gujarat 25th Nov, 2015 1 2.8 MW

10 Ghatghar,Maharashtra 4th Dec, 2015 2 17 MW

11 Koyna,Maharashtra 7th Dec, 2015 2 4 MW

12 SSP, Gujarat 20th Dec, 2015 4 102 MW

13 Ukai, Gujarat 22nd Dec, 2015 NA NA

14 Bhadravati HVDCBtB AC bypass 14th June, 2015 4 90 MW

NTPC Jhanor may plan joint mock blackstart drill in coordination with SLDC Gujarat

and WRLDC and try to complete it before March 2016.

Similarly SLDC Kalwa may plan blackstart mockdrill with Uran GPS, Bhivpuri, Bhira,

Pithan and Trombay. SLDC Gujarat may plan mock drill exercise for gas stations at

Sugen, GIPCL and Dhuvaran. In case of constraints in identifying load for the islanded

system exercise may be conducted by using the DG to blackstart the unit, charging

the station dead bus and synchronizing with the grid through bus coupler.

SLDC Madhya Pradesh may also explore possibility of conducting the exercise at

hydro stations of Indirasagar, Omkareshwar, Birsignpur, Gandhisagar by using the DG

to black start the unit, charging the station dead bus, charging the line and

synchronizing with the grid at remote end substation.

SLDC Madhya Pradesh may also update the status of governor problem atBirsinghpur, Madhikheda, Rajghart Stations.9.11 Ensuring Reliable telemetry from Solapur_PG, Pune_GIS and

Aurangabad_PG,

AGM, WRLDC informed that unreliable telemetry from 765/400 kV Solapur_PG,Pune_GIS and Aurangabad_PG is causing a constraint in visualizing the operatingconditions in South Maharashtra.

Between 20th Dec 2015 to 04th Jan 2016 the data from 765/400 kV Pune (GIS) wasunavailable for 156 hours, data from Solapur_PG was unavailable for 25 hrs and datafrom Aurangabad was unavailable for nearly 41 hours out of 360 hrs.

765kV Pune(GIS)

Downtime from Time Downtime to Time Duration of Outage24-Dec-15 11:29 24-Dec-15 20:30 9:01:00

26-Dec-15 5:00 26-Dec-15 10:45 5:45:0029-Dec-15 1:25 02-Jan-16 16:42 111:17:00

03-Jan-16 17:01 04-Jan-16 23:00 29:59:00Total 156:02:00

25

479th OCC Agenda

765kVSolapur(PG)

Downtime from Time Downtime to Time Duration of Outage21-Dec-15 14:57 21-Dec-15 15:24 0:27:0021-Dec-15 23:02 21-Dec-15 23:30 0:28:0022-Dec-15 18:08 22-Dec-15 23:04 4:56:0023-Dec-15 15:54 23-Dec-15 16:34 0:40:0023-Dec-15 18:15 23-Dec-15 20:22 2:07:00

28-Dec-15 4:02 28-Dec-15 18:09 14:07:0029-Dec-15 12:47 29-Dec-15 14:00 1:13:0029-Dec-15 16:50 29-Dec-15 18:09 1:19:00

Total 25:17:00

765kVAurangabad

Downtime from Time Downtime to Time Duration of Outage22-Dec-15 15:51 22-Dec-15 16:27 0:36:0024-Dec-15 11:02 24-Dec-15 23:27 12:25:0025-Dec-15 15:13 26-Dec-15 16:27 25:14:0026-Dec-15 22:40 26-Dec-15 23:18 0:38:0031-Dec-15 13:20 31-Dec-15 15:16 1:56:00

Total 40:49:00

WRTS-1, POWERGRID to apprise the reason for non-availability of telemetryfrom 765 kV stations in Maharashtra and update the progress in ensuringredundancy of communication channel from these stations to WRLDC.

9.12 Failure of SPS operation from Sholapur on 02.01.2016

AGM, WRLDC informed that on 02.01.2016, between 0700 hrs to 0710 hrs, SPScondition was satisfied having flow on 765 kV Sholapur-Raichur D/C was carrying2500 MW for 5 sec. However there was no load shedding in SR or generationreduction at JPL, JPL Extension, KSK, NSPCL, KWPCL, DB Power, LANCO, BALCO.It was understood from telephonic discussion that SPS signal was generated from765kV Solapur Station but not received by Raipur station. The generating stations ofWR have also informed that the SPS signal was not received from Raichur/Solapur.Similarly signal was not received at Kolar.

Again on 02.01.2016 765 kV Solapur-Raichur-II tripped at 10:46hrs causing

overloading in circuit-I, SPS condition was also again satisfied (Single circuit flow

exceeded 1500 MW for more than 2.5 secs). In this case also no SPS action by WR

Generators and load loss by SR constituents was reported.

WRTS-1, POWERGRID may apprise the reason for failure of SPS signal despitedual communication channel as well as PLCC.

26

479th OCC Agenda

9.13 Prolonged Outage of HVDC Bhadravati Pole-1 and 765 kV Solapur-Raichur-2

AGM, WRLDC informed that HVDC Bhadravati Pole-1 is out of service since

28.12.2015 due to DC differential protection operated resulted in reducing the ATC on

WR-SR from 3250 MW to 2750 MW.

The crisis was aggravated on 2-Jan’16 at 10:46 hrs when the 765 kV Solapur-Raicher

ckt-2 tripped on R-Y phase fault. The prolonged outage of both the Inter-Regional

lines resulting in further reduction of WR-SR ATC from 2750 MW to 500 MW.

Large number of STOA/MTOA/LTA transactions had to be curtailed which resulted in

generation backing down of WR generators and massive load shedding in Southern

Region.

As per the clause 5 (b) of CERC (Standards of Performance of inter-State

transmission licensees) Regulations, 2012, in case of conductor snapping, the line

should be restored within 48 hours (for plain area) and 72 hours for (hilly terrain).

POWERGRID may apprise the status regarding HVDC Bhadravati Pole-1.

9.14 Islanding failure in AMGEN(AE Co)

AGM, WRLDC informed that Ahmedabad and Sabarmati city having an islanding

scheme with AMGEN (AE Co) generation which was discussed 124th Protection

committee meeting dated 21.4.15. However on 13-Nov’15 at 13:42 hrs fault on 220 kV

Ranasan-Karamsad-1, resulted in tripping of 220 kV Dehgam-Ranansan-1&2 and 132

kV TPL Sabarmati-Sabarmati -D/C.

The loss of 132 kV (TPL)Sabarmati-Sabarmati-D/C should have resulted in islanding

of Sabarmati and Ahmedabad as per the islanding design. However the unit of

AMGEN (AE Co) Generating Unit D & E tripped leading to the island collapse

immediately, causing loss of supply to the Sabarmati and Ahmedabad area. The

island collapse led to load loss of 264 MW and Generation loss of 143 MW.

SLDC Gujarat and Torrent Energy may apprise the details of the event and thecorrective measures being taken ensure survival of the island.

27

479th OCC Agenda

9.15 Western Regional System Recovery Procedure 2016 uploaded on theWRLDC website

AGM, WRLDC informed that WR System Recovery Procedure 2016 was compiled

with inputs from all stakeholders. The document is available on the WRLDC website.

The major highlights of the changes done are as under:

Revision in Restoration path due to network changes since Jan’2015

Start-up paths for new units (CoD) added in relevant state wise chapters

Updated traction details from Central & Western Railways

Shunt compensation available in the form of Line/Bus Reactors for each start-

up path has been included

Annex-VII has been modified where in sub-station wise total shunt

compensation availability is given for ready refrence.Summary of the activities

of the Crisis Management Task Force included

A brief history indicating all past mock drills in WR since 2011 is added in

Chapter-12.

List work shops on system restoration conducted in 2015 is also given in

Chapter-12.

A new sub-annexure [Annex-I(b)] has been added to highlight the challenges

faced during grid recovery post the 2012 Indian Grid Disturbance.

Reports of 13 Black Start Mock Drills of generating stations done in 2015 added

Reports of Black Start Mock Drills of Bhadravati HVDC BtB added

New Reporting format for Mock drills enclosed as Annex-II(20)

A diagram showing the schematic communication path (proposed) under new

Master Communication Plan for Western Region is given as a separate

Annexure (Annexure-X).

The sub-committee may like to note the same.

9.16 Western Regional Reactive Power resource document 2016 uploaded onthe WRLDC website

AGM, WRLDC informed that WR Reactive Resource Document 2016 was compiledwith inputs from all stakeholders. The document is available on the WRLDC website.Following additions/changes were made to Reactive Power Resource Document 2014

28

479th OCC Agenda

Relevant Extracts from 5.3, 13.6 of Transmission Planning Transient OverVoltage, Max/Min Voltage Limits etc.

Capability Curve, Operating Limits and its brief explanation Procedure for Reactive Capability Test of Generators Empirical Formula for Estimated voltage rise during line charging Top 5 lines having highest voltage rise based on Emprical formaula (765 & 400

kV) Line length, Conductor type and SIL of 400 kV and 765 kV lines Present Tap positions of ICTs Revised List of Lines to be opened on high voltage Substation wise reactive resources available Screenshot and Display number of the SCADA tabular display prepared for Bus

Reactor and SLR monitoring Reactive Power Resources Summary Upcoming Statcoms in WR

Over Voltage settings of 765 kV Lines.The sub-committee may like to note the same.

9.17 Automatic Demand Management Scheme(ADMS) as per IEGC 5.4.2(d)

AGM, WRLDC informed that Honb’le CERC has issued the order on dt.31.12.2015 in

the matter of Non-compliance of Regulation 5.4.2 (d) of the Central Electricity

Regulatory Commission (Indian Electricity Grid Code) Regulations, 2010 . which

provides for implementation of demand management schemes by State Load

Despatch Centre through their respective State Electricity Boards/Distribution

Licensees.

Considering the request of the respondents to grant more time to implement ADMS,

Commission has granted the time till 30.6.2016 to implement ADMS, failing whichdefaulters shall be liable for action under Section 142 of the Act for noncompliance of

the Regulation 5.4.2 (d) of the Grid Code and order of the Commission. RLDCs are

directed to submit the report in this regard by 31.8.2016.

In Western Region, Gujarat & Madhya Pradesh only completed the implementation of

ADMS successfully in the month of May,2015. Maharashtra and Chhattisgarh are yet

to complete ADMS though the target for implementation was Dec 2015. Status of

ADMS implementation in the state GOA, UT of DD and UT DNH have not been

received at WRLDC.

Constituents to furnish the updated status of implementation of ADMS in prescribed

format as given below:

29

479th OCC Agenda

Activity Maharashtra Chattisgarh Goa DD DNH1 Identification of feeders for

ADMS

2 Pilot project / Demo project

3 Preparation of Action Plan /Detailed Project Report

4 Management Approval /Funding Approval

5 Submission of Action Plan inCERC

6 % progress in physicalsegregation of ADMSfeeders from the feedersbeing used for loadshedding under routine loadrostering, distress shedding,UFR, df/dt, SPS etc.

7 % progress inwiring/establishingcommunication link betweenSLDC and substation fortransmitting control signalfrom remote (throughSCADA or otherwise)

8 Target date for projectcompletion

9 Remarks, if any

The Sub-Committee may like to note.ITEM NO. 10: DATE AND VENUE OF NEXT OCC MEETING478th OCC reviewed the meeting roaster and finalized sheet is enclosed at Annexure-

10. As per roster 480th OCC meeting will be hosted by NTPC, VINDHYACHAL.

NTPC proposed on 08.02.2016 at NTPC Vindhyachal Station.

The sub-committee may like to confirm the same.

*****************************

Anaulagnak 2.1

maah idsambar 2015

1. INTEGRATED OVER AN-HOURek GaMTo maoM samaakilat

1.1 MAXIMUM FREQUENCY 50.14 Hz. BETWEEN 2100 Hrs & 2200 Hrs Hrs. ON 27.12.2015

AiQaktma AavaRi%t

1.2 MINIMUM FREQUENCY 49.78 Hz. BETWEEN 0700 Hrs & 0800 Hrs Hrs. ON 30.12.2015

nyaUnatma AavaRi%t

1.3 AVERAGE FREQUENCY 49.98 Hz.

AaOsat AavaRi%t

2. INSTANTANEOUS ta%kailak

2.1 MAXIMUM FREQUENCY 50.32 Hz. AT 06:02:00 Hrs. ON 06.12.2015

AiQaktma AavaRi%t

2.2 MINIMUM FREQUENCY 49.59 Hz. AT 07:47:00 hrs Hrs. ON 30.12.2015

nyaUnatma AavaRi%t

3. %AGE OF TIME WHEN FREQUENCY WAS DECEMBER 2015 NOVEMBER 2015 OCTOBER 2015

AavaRi%t ka samaya p`itSat maoM

3.1 BELOW 48.5 Hz. 0.00 0.00 0.00

48.5 hT\ja ko naIcao3.2 BETWEEN 48.5 Hz. AND 48.8 Hz. 0.00 0.00 0.00

48.5 hT\ja AaOr 48.8 hT\ja ko baIca3.3 BETWEEN 48.8 Hz. AND 49.2 Hz. 0.00 0.00 0.00






50.05 hT\ja AaOr 51.5 hT\ja ko baIca3.9 ABOVE 51.5 Hz. 0.00 0.00 0.00

51.5 hT\ja ko }pr

4.1 NO. OF TIMES FREQUENCY 0 0 0

TOUCHED 48.80 Hz. AavaRi%t 48.80 hT\ja kao CUhI





maoM AavaRi%t ko AaMkD,aoM ka ivavarNa

FREQUENCY PARTICULARS DURING DECEMBER 2015

(AS PER FREQUENCY REPORT OF WRLDC)

(piScama xao~ Baar p`oYaNa kond` kI AavaRi%t irpaoT- ko AaQaar pr)

Voltage Profile during the month of Dec. 2015Annex-I

Date

Max. Kv Min. Kv Max. Kv Min. Kv Max. Kv Min. Kv Max. Kv Min. Kv Max. Kv Min. Kv Max. Kv Min. Kv Max. Kv Min. Kv Max. Kv Min. Kv

1 417 399 414 396 420 420 430 397 418 404 421 408 422 413 413 399

2 417 400 414 397 434 420 431 400 419 404 420 407 422 411 413 3993 419 398 417 396 433 414 431 404 419 402 419 409 424 412 412 3994 419 398 417 396 433 414 431 404 419 402 419 409 424 412 412 3995 417 399 414 396 435 414 432 399 419 404 420 408 424 412 412 3986 418 399 414 394 436 416 431 395 419 404 422 411 423 411 413 4007 418 399 414 394 436 416 431 395 419 404 422 411 423 411 413 4008 417 396 413 392 435 413 429 396 420 400 423 408 423 408 412 3969 418 396 413 391 436 414 430 395 419 400 422 410 422 409 413 398

10 418 398 413 394 436 413 431 398 419 403 421 408 421 409 413 40011 417 399 414 393 435 411 433 398 419 403 423 409 422 409 413 40012 419 397 416 395 435 414 433 396 420 403 421 408 422 412 414 40213 420 399 414 394 435 412 432 397 420 404 420 408 422 410 413 402

जेतपरुIndore Itarsi Karad Dhule Asoj Kasor Bhilai Jetpur

2015Annex-2.3

इंदौर इटारसी कराड धुले असोज कासोर

( ),

Power System Operation Corporation Ltd(A wholly owned subsidiary company of POWERGRID)

Western Regional Load Despatch Centre,Mumbai

भार , WRLDC, Mumbaiसूचना MIS

13 420 399 414 394 435 412 432 397 420 404 420 408 422 410 413 40214 421 396 418 391 436 415 433 396 422 401 421 409 424 408 413 40315 418 396 415 392 434 411 430 395 419 399 423 408 421 408 413 40216 418 396 415 392 434 411 430 395 419 399 423 408 421 408 413 40217 419 396 414 392 435 411 432 391 420 400 423 409 422 411 414 40118 420 394 416 392 437 411 433 396 420 403 424 409 422 409 415 40219 418 396 418 394 433 410 432 393 419 398 424 409 421 408 413 40020 419 398 419 397 435 416 432 397 421 400 424 412 422 409 415 40121 420 398 420 396 439 414 433 397 420 399 424 410 423 409 414 40122 418 397 419 395 438 412 430 392 419 403 423 412 423 409 414 40123 419 396 418 395 437 411 431 393 419 399 424 411 421 408 415 40124 421 399 421 397 439 415 435 399 419 401 425 412 424 409 413 40225 421 399 422 397 438 417 433 397 420 400 425 410 425 411 413 40326 421 398 421 397 438 415 433 403 421 401 426 412 425 409 413 40127 419 399 420 398 439 418 434 401 419 401 424 410 425 410 414 40128 421 397 419 394 438 418 431 396 418 402 424 411 425 409 414 40029 419 398 416 394 438 417 430 396 418 404 423 411 423 412 412 40230 418 400 415 398 436 414 432 399 420 404 423 412 423 410 413 40031 418 400 414 396 436 436 431 399 421 405 423 411 421 409 415 402

421 394 422 391 439 410 435 391 422 398 426 407 425 408 415 396

भार , WRLDC, Mumbaiसूचना MISभार , WRLDC, Mumbaiसूचना MIS

Date

Max. Kv Min. Kv Max. Kv Min. Kv Max. Kv Min. Kv Max. Kv Min. Kv Max. Kv Min. Kv Max. Kv Min. Kv Max. Kv Min. Kv Max. Kv Min. Kv

1 414 401 409 396 421 401 430 406 773 759 795 765 785 756 784 7602 413 396 413 393 421 402 429 409 774 757 795 762 795 768 787 7583 413 398 412 390 422 402 430 410 774 755 794 762 795 767 792 7644 408 390 409 388 422 402 430 410 774 755 794 762 792 762 790 754

5 411 391 410 387 423 400 429 408 771 756 788 759 789 764 787 754

6 411 397 411 392 421 397 428 403 774 755 788 752 788 757 793 764

7 417 398 412 392 421 397 428 403 774 755 787 747 792 750 790 757

8 414 401 408 390 421 396 426 400 773 747 788 762 787 752 787 763

9 414 399 413 386 424 396 429 401 773 746 785 756 787 745 787 758

10 412 399 409 394 421 397 427 404 763 750 785 756 783 751 782 75911 424 404 408 394 423 399 430 404 756 756 788 760 786 756 790 76212 415 400 411 392 423 399 429 403 756 756 785 760 792 753 792 76113 416 401 415 397 423 399 428 403 756 756 791 758 790 759 789 761

Bina Gwalior Nagda Khandwa Sipat seoni Gwalior Bina

नागदा खंडवा

( ),



भार , WRLDC, Mumbaiसूचना MIS

13 416 401 415 397 423 399 428 403 756 756 791 758 790 759 789 76114 410 399 417 392 424 397 430 400 770 749 794 751 797 754 797 75815 418 399 414 391 422 399 427 402 770 748 787 755 790 751 793 76016 416 397 410 389 422 399 427 402 770 748 784 752 787 749 791 75217 418 400 411 394 423 395 429 402 772 751 791 759 790 759 793 76118 417 399 411 392 422 398 428 401 770 750 787 754 790 750 792 75919 425 401 412 389 422 398 428 402 769 749 787 750 794 746 791 74620 425 405 414 388 421 398 428 403 774 755 791 754 799 750 792 75321 427 402 416 390 424 400 430 404 775 753 794 754 798 745 795 75022 427 403 417 390 422 399 430 402 770 750 790 750 802 752 795 75223 424 404 410 388 423 397 427 402 771 751 787 752 790 750 785 75324 429 402 413 389 424 399 431 403 775 751 793 754 797 749 795 75225 429 402 414 383 424 399 431 406 777 756 796 759 798 743 797 75026 418 399 411 389 425 402 429 408 771 749 794 754 794 752 794 753

27 427 405 414 388 422 402 426 409 775 755 793 755 799 751 796 752

28 420 400 417 392 422 397 418 418 775 754 787 751 793 754 796 758

29 419 399 418 392 424 399 428 418 775 757 789 764 796 748 797 75930 416 404 413 397 423 403 426 406 773 756 788 765 790 762 793 76931 417 402 411 392 421 403 427 407 771 755 787 761 793 756 791 762

429 390 418 383 425 395 431 400 777 746 796 747 802 743 797 746

( ),



भार , WRLDC, Mumbaiसूचना MISभार , WRLDC, Mumbaiसूचना MIS

No. ofOccasions

Max Load Reliefat 49.2 Hz

No. ofOccasions


No. ofOccasions


No. ofOccasions


1 01-Dec-15 0 0 0 0 0 0 0 02 02-Dec-15 0 0 0 0 0 0 0 03 03-Dec-15 0 0 0 0 0 0 0 04 04-Dec-15 0 0 0 0 0 0 0 05 05-Dec-15 0 0 0 0 0 0 0 06 06-Dec-15 0 0 0 0 0 0 0 07 07-Dec-15 0 0 0 0 0 0 0 08 08-Dec-15 0 0 0 0 0 0 0 09 09-Dec-15 0 0 0 0 0 0 0 0

10 10-Dec-15 0 0 0 0 0 0 0 011 11-Dec-15 0 0 0 0 0 0 0 012 12-Dec-15 0 0 0 0 0 0 0 013 13-Dec-15 0 0 0 0 0 0 0 014 14-Dec-15 0 0 0 0 0 0 0 015 15-Dec-15 0 0 0 0 0 0 0 016 16-Dec-15 0 0 0 0 0 0 017 17-Dec-15 NIL 0 NIL NIL NIL 018 18-Dec-15 0 0 0 0 0 0 0 019 19-Dec-15 0 0 0 0 0 0 0 020 20-Dec-15 0 0 0 0 0 0 0 021 21-Dec-15 0 0 0 0 0 0 0 022 22-Dec-15 0 0 0 0 0 0 0 023 23-Dec-15 0 0 0 0 0 0 0 024 24-Dec-15 0 0 0 0 0 0 0 025 25-Dec-15 0 0 0 0 0 0 0 026 26-Dec-15 0 0 0 0 0 0 0 027 27-Dec-15 0 0 0 0 0 0 0 028 28-Dec-15 0 0 0 0 0 0 0 029 29-Dec-15 0 0 0 0 0 0 0 030 30-Dec-15 0 0 0 0 0 0 0 031 31-Dec-15 0 0 0 0 0 0 0 0

1025 91 490 851

ANNEX -2.4

DateSl. No Madhya Pradesh( Compiled from the data received from the constituents)

Chhattisgarh

Under Frequency Operation in various Constituent System of Western Region during the month DECEMBER- 2015

Recommonded Load relief at49.2 Hz / 49.0/48.8/48.6 Hz

Gujarat Maharashtra

Annexure -2.5Power Cut/Restrictions in Western Region for the month of December-2015

k : gaujarat Gujarat

1 ]VaoogaaoM ko ilayao ivaVut kTaOityaaM1 Power Cut/ Restriction on Industriesa) All industries are allowed to run their units on all days of week & if they want to avail staggered holiday,

then they will have to staggered on notified day only & cannot avail as per their choice.b) All industries are required to keep their recess timings staggered.

2 kRiYa va gaàmaINa xao~aoM kao ivaVut AapUit-2. Power supply to Agricultural & Rural Sectors

a) Only 8 Hrs. Power supply in staggered form in rotation of day & night is given to Ag. Single Phasesupply during rest of 16 Hrs by providing LSTC.

b) Jyotigram Yojana 24 hrs.

3 Anya jaanakarI3. Any other information: NIL.K : maQya p`doSa Madhya Pradesh

1 ]VaoogaaoM ko ilayao ivaVut kTaOityaaM / pabMaidyaaM , rajya maoM Baar inayamana Aaid1 Power Cut/ Restriction on Industries, Load Shedding in the state etc

ivavarNa Details ivaVut kTaOtI kI maa~aQuantum of

power cut (MW)

pabandI ka samayaRestriction Timing

p`it idna kula }jaa- kTaOtITotal Energy Cut

(MUs /daysao From tk To(a) Power Restrictions(Eveningpeak Hour) on non continuous

process HT/LT Industries M(b) Baar inayamana Load Shedding

SaUnya Nil

SaUnya Nil

SaUnya Nil

SaUnya Nil

SaUnya Nil

SaUnya Nil

SaUnya Nil

SaUnya Nil

(c) Anya jaanakarI Other information1.Weekly Off2.Staggering of power supply

SaUnya NilSaUnya Nil




2 kRiYa xao~ kao ivaVut AapUit-2. Power supply to Agricultural Sector: -

ivavarNa Details sao FromidnaaMk Date

tk ToidnaaMk Date

p`it idna AapUit- GaMTo Supply Hours per dayMax. (Hrs) Min. (Hrs) Average (Hrs)

2.1 Three-PhaseSupply(DLF)

01.12.2015 31.12.2015 23:42 23:04 23:32

2.1 Three-PhaseSupply(Irrigation)

01.12.2015 31.12.2015 09:54 09:41 09:51

2.1 Three-PhaseSupply(Mixed)

01.12.2015 31.12.2015 23:34 22:51 23:21

3 Anya jaanakarI3. Any other information

SahrI xao~aoM maoM inayamana ivaVut kTaOityaaM Scheduled Power cuts in Urban AreasivavarNa Details sao From

idnaaMk Datetk To idnaaMk

DateAaosat p`itidna Average SupplyAapUit- GaMTo Hours per day

Max.(Hrs)

Min. (Hrs) Average (Hrs)

3.1 Commissionary H. Qtrs. 01.12.2015 31.12.2015 23:55 23:38 23:493.2 District Head Qtrs. 01.12.2015 31.12.2015 23:56 23:44 23:533.3 Tehsil Head Qtrs. 01.12.2015 31.12.2015 23:51 23:32 23:44

ga : maharaYT/ Maharashtra1 ]QyaaogaaoM ko ilayao ivaVut kTaOityaaM / pabMaidyaaM , rajya maoM Baar inayamana Aaid1. Power Cut/ Restriction on Industries, Load Shedding in the state etc

ivavarNa Details ivaVut kTaOtI kI maa~aQuantum of

power cut (MW)

pabandI ka samayaRestriction Timing

pìt idna kula }jaa- kTaOtITotal Energy Cut

(MUs /dayFrom To

(a) Power Cuts/Restriction on HT/LT Industries(b) Load SheddingFrom 01.12.15 to 31.12.15

SaUnya Nil

@ 9-85 MW

SaUnya Nil

00.00

SaUnya Nil

24.00

SaUnya Nil

@ 0.4 MUs/day

(c) Any other information1.Weekly Off2. Staggering of power supplyIndustrial Staggering LSwithdrawn from 03/02/2012

SaUnya Nil SaUnya Nil SaUnya Nil SaUnya Nil

2 kRiYa xao~ kao ivaVut AapUit-2. Power supply to Agricultural Sector


tk ToidnaaMk Date

p`it idna AapUit- GaMTo Supply Hours per day

Max. (Hrs) Min. (Hrs) Average (Hrs)2.1 Three-Phase Supply 01.12.2015 31.12.2015 10:00 08:00 09:00

2.2 Single-Phase Supply 01.12.2015 31.12.2015 18:00 18:00 18:003 Anya jaanakarI Any other information:There is no load shedding on industrial feeders in Maharashtra

Ga : C%tIsagaZ, Chhattisgarh:1 ]QyaaogaaoM ko ilayao ivaVut kTaOityaaM / pabMaidyaaM , rajya maoM Baar inayamana Aaid1 Power Cut/ Restriction on Industries, Load Shedding in the state etc

ivavarNa Details ivaVut kTaOtI kI maa~aQuantum of power cut (MW)

pabandI ka samayaRestriction Time

p`it idna kula}jaa- kTaOtI

TotalEnergy Cut(MUs /day)

sao From tkTo

(A) Scheduled(a) (i) Power Cuts/Restriction on HT Industries(ii) Power Cuts/Restrictionon LT Industries(iii) Power Cuts/Restrictionon Rural(iv) Agriculture pump*

(v)Urban/ Sub-Urban(iv)Town feeders(C-1to C-6)

(B) Un-Scheduled(a) Load Shedding

00.00(Av)

00.00(Av)

00.00 (Av)00.00 (Av)00.00(Av)00.00 (Av)

1.Rural 62.08 MW(Av) For 169.29 Hrs.2.Town Feeders (C-1to C-6 & X) : 0.00(Av)

-

-

-00.00

--

-

-

-

-00.00

--

-

-

-

-

-0.00

--

0.346

-

3. HT Industries 74.20 (Av) For 35.27 Hrs.0.069

Total Energy Cut/day 0.414( b) Any other information1.Weekly Off/staggering ofpower supply

1day (In a week as perconsumer’s option) 50MW(Av.) - - 0.039

2 kRiYa xao~ kao ivaVut AapUit-2. Power supply to Agricultural Sector


tk ToidnaaMk Date

p`it idna AapUit- GaMTo Supply Hours per dayMax. (Hrs) Min. (Hrs) Average (Hrs)

2.1 Three-Phase Supply 01.12.2015 to 31.12.2015, 6.00Hrs (Power cut)

18.00

2.2 Single-Phase Supply - - - - -2.3 Remarks/Note/ - - - - -

3 Anya jaanakarI / Any other information: SaUnya Nil

Annex-2.6

( )

,Power System Operation Corporation Ltd.(A wholly owned subsidiary company of POWERGRID)


2015Details of forced unit outages during the month of Dec. 2015

अनु

Sl.No

Unitसंघटक

Constituent/IPP मतामेगावॉट

Cap.MW

सoFrom

समय

सoFrom

समय

कारणReason

Time Date Date

1. ESSAR-2 GSECL 172 12:12 22-02-2013 Still out Still out SHORTAGE OF GAS

2. GTPS-1 GSECL 120 5:36 22-10-2014 Still out Still out RSD

3.GTPS-2

GSECL 120 20:20 22-10-2014 Still out Still out RSD

4. उकाई UKAI-2 GSECL 120 15:02 10-11-2014 Still out Still out RSD5. सूजन SUGEN-2 GSECL 382 11:46 31-01-2015 Still out Still out RSD6. हजीरा HAZIRA EXT-1 GSECL 351 0:37 25-03-2015 Still out Still out RESTORATIONUNCERTAIN7.

WANAKBORI 6GSECL 210 20:15 18-09-2015 Still out Still out RSD

8. STPS 1 GSECL 120 11:00 19-09-2015 Still out Still out RSD

9. जीपेक GPEC 3 GSECL 218 20:14 30-09-2015 09:43 21-12-2015 RSD10. डीजीबीपी DGBP 1 GSECL 112 23:02 29-09-2015 Still out Still out RSD11. सूजन SUGEN 1 GSECL 382 21:23 02-10-2015 Still out Still out RSD12.


13.STPS 2


14. जीपेक GPEC 1 GSECL 218 10:00 06-11-2015 09:03 22-12-2015 RSD15.

WANAKBORI 7GSECL 210 12:03 08-11-2015 13:18 25-12-2015 RSD

16. GTPS 4 GSECL 120 11:35 11-11-2015 05:40 09-12-2015 RSD

17. उकई UKAI 4 GSECL 200 19:18 19-11-2015 Still out Still out RSD18. STPS 3 GSECL 250 16:09 25-11-2015 Still out Still out DRUM LEVEL LOW

19. जीआईपीसीएलGIPCL STG 2

GSECL 165 20:00 27-11-2015 06:41 28-12-2015 RSD

20. उकई UKAI 6 GSECL 500 23:30 29-11-2015 14:35 16-12-2015 RSD21. डीजीबीपी DGBP 2 GSECL 112 05:45 01-12-2015 06:10 16-12-2015 RSD22.


23. GTPS 3 GSECL 210 08:30 11-12-2015 Still out Still out RSD

24. GTPS-4 GSECL 120 19:10 12-12-2015 Still out Still out RSD

25.WANAKBORI 2


26. एसएलपीपी SLPP 3 GSECL 125 09:27 15-12-2015 Still out Still out BTL27. उकई UKAI 3 GSECL 200 21:17 18-12-2015 Still out Still out RSD28.

WANAKBORI 1GSECL 210 12:01 20-12-2015 Still out Still out BTL

29. सूजन SUGEN 3 GSECL 382 11:54 22-12-2015 Still out Still out RSD30. जीपेक GPEC 1 GSECL 218 12:00 22-12-2015 08:54 04-01-2016 RSD31. जीपेक GPEC 3 GSECL 218 18:57 23-12-2015 05:45 04-01-2016 RSD32. जीपेक GPEC 2 GSECL 218 19:38 24-12-2015 06:00 29-12-2015 RSD33. STPS 4 GSECL 250 10:45 28-12-2015 14:42 28-12-2015 BFP PROBLEM

34. STPS 3 GSECL 250 20:55 28-12-2015 Still out Still out RSD

35.WANAKBORI 2


36.TORRENT POWER E

TORRENTPOWER

120 00:05 13-12-2015 07:30 01-01-2016BOILER ANNUALSURVEY

37.CHANDRAPUR-1

MAHAGENCO 210 7:15 28-08-2014 Still out Still outBTL/ ECONOMICSHUTDOWN.

38. PARLI 6 MAHAGENCO 250 15:07 25-06-2015 Still out Still out WATER SHORTAGE

39. कोराडी KORADI-6 MAHAGENCO 210 01:02 20-03-2015 Still out Still out ECONOMIC SHUTDOWN40. उरण URAN-7 MAHAGENCO 108 00:07 17.04.2015 Still out Still out GAS TURBINEPROBLEM41. PARLI-3 MAHAGENCO 210 12:52 14.06.2015 Still out Still out WATER SHORTAGE

42. WPCL2

MAHAGENCO 135 00:00 15-06-2015 Still out Still out LESS SCHEDULE

43. PARLI 4 MAHAGENCO 210 19:47 05-07-2015 Still out Still out WATER SHORTAGE

44. PARLI 5 MAHAGENCO 210 14:55:00 06-07-2015 Still out Still out WATER SHORTAGE.

45. PARLI 7 MAHAGENCO 250 12:07:00 08-07-2015 Still out Still out WATER SHORTAGE

46.WPCL 1

MAHAGENCO 135 17:31 23-10-2015 02:23 29-12-2015 LESS SCHEDULE

47.CHANDRAPUR 6

MAHAGENCO 500 20:01 30-11-2015 09:10 11-12-2015TURBINE BEARINGVIBRATION HIGH

48. NASIK 3 MAHAGENCO 210 09:22 01-12-2015 14:35 06-12-2015 BTL

49. कोराडी KORADI 7 MAHAGENCO 210 22:52 02-12-2015 00:14 08-12-2015 BOILER DRUMLEAKAGE50. उरण URAN B0 1 MAHAGENCO 120 12:42 09-12-2015 14:39 19-12-2015 GAS SHORTAGE51. उरण URAN 8 MAHAGENCO 108 12:42 09-12-2015 09:18 19-12-2015 GAS SHORTAGE

52. वीआईपीएल VIPL 2 MAHAGENCO 300 23:52 09-12-2015 22:20 14-12-2015INSPECTION ANDTESTING OF U-2BOILER

53. भुसावलBHUSAWAL 2

MAHAGENCO 210 01:10 17-12-2015 18:41 20-12-2015 BTL

54. उरण URAN B0 1 MAHAGENCO 120 12:55 22-12-2015 16:50 25-12-2015 OUTAGE OF U-7 ANDU-855. जयगड JAIGAD 3 MAHAGENCO 300 13:18 23-12-2015 Still out Still out NO SCHEDULE56.

CHANDRAPUR 5MAHAGENCO 500 18:50 27-12-2015 Still out Still out AOH

57.WPCL 3

MAHAGENCO 135 05:56 29-12-2015 Still out Still out P.A FAN PROBLEM

58. TROMBAY 6 TPC 500 17:08 15-07-2015 Still out Still out ECONOMYSHUTDOWN.

59.अमरावती

AMRAVATITPP(INDIABULL)-4

RATTANPOWER INDIA

LTD270 11:48 18-11-2015 23:06 12-12-2015 PA FAN PROBLEM

60. AMRAVATITPP(INDIABULL)-5

RATTANPOWER INDIA

LTD270 21:29 12-12-2015 01:23 15-12-2015

COOLING WATERLINE LEAKAGE

61.APML TIRODA 4

ADANIPOWER

660 06:55 14-12-2015 Still out Still outAPH-A PA HOT AIRDUCT LEAKAGE.

62.APL MUNDRA 5

ADANIPOWER

660 20:07 17-12-2015 15:00 27-12-2015CONDENSER T/L,STOA TO NCR ANDBIHAR CURTAILED

63.APL MUNDRA 1

ADANIPOWER

330 14:58 25-12-2015 Still out Still out RSD

64. एमसीसीपीएलMCCPL 1

ACBIL 300 16:44 28-10-2015 Still out Still outPROBLEM IN BOTTOMASH SYSTEM

65. महानESSAR MAHAN-1

ESSAR POWER 660 17:16 17.10.14 Still out Still out LESS SCHEDULE

66. ESSAR IPP 1 ESSAR POWER 170 12:30 11-08-2015 Still out Still out SPARKING ON GT

67. ईपीजीएल EPGL 2 ESSAR 600 01:30 03-12-2015 00:54 07-12-2015 AIR PREHEATERPROBLEM68. ईपीजीएल

EPGL,Vadinar 1ESSAR 600 19:31 18-12-2015 14:10 04-01-2016 RSD

69. आरजीपीपीएलRGPPL-1B

RGPPL 320 23:00 31-03-2014 Still out Still out DRY PRESERVATION

70. आरजीपीपीएलRGPPL-1A

RGPPL 320 13:30 8-07-2014 Still out Still out LESS REQUISITION


RGPPL 332 12:00 21-07-2014 Still out Still out CW PUMP PROBLEM


RGPPL 332 19:50 01-06-2015 Still out Still out NO SCHEDULE

73. आरजीपीपीएलRGPPL 2B

RGPPL 332 16:05 09-11-2015 Still out Still outTESTINGCOMPLETED/NOSCHEDULE

74. अमरकंटकAMARKANTAK-4

MPGCL 120 11:13 30-04-2014 Still out Still out TURBINE VIBRATION

75. अमरकंटकAMARKANTAK-3

MPGCL 120 0:25 12-01-2015 Still out Still outFIRE CAUGHT INTURBINE FLOOR

76. सातपुरा MPGCL 250 01:20 25-07-2015 Still out Still out FIRE IN GT

SATPURA IV 11

77. SINGAJI 2 MPGCL 600 10:04 29-10-2015 01:58 05-11-2015 RSD

78. SATPURA III 8 MPGCL 210 12:40 30-11-2015 Still out Still out TURBINE VIBRATIONHIGH

79. SINGAJI 1 MPGCL 600 20:11 30-11-2015 02:28 13-12-2015 BTL

80.SGTPS 2

MPGCL 210 05:10 25-12-2015 13:40 04-01-2016 BTL

81. KORBA(W) EXTN CSPTCL 500 19:37 10-12-2015 18:01 15-12-2015 DRUM LEVEL LOW

82. डीजीईएनDGEN-52- TPGL 400 21:43 10-11-2015 05:14 21-12-2015 LOW SCHEDULE83. डीजीईएन DGEN-53 TPGL 400 22:56 19-12-2015 Still out Still out NO SCHEDULE84. डीजीईएन DGEN-51 TPGL 400 22:56 31-12-2015 WITHDRAWN AS PERSCHEDULE85. वंदनाVANDANA -1 VANDANA 135 15:00 9-01-2015 Still out Still out BTL86.

DHARIWAL-1DHARIWAL 300 2:27 28-May-14 13:00 16-12-2015

HIGH VIBRATIONPROBLEM.

87.DHARIWAL CTU 2

DHARIWAL 300 00:45 02-11-2015 13:00 16.12.2015 NO SCHEDULE

88. जेपीएलJPL Stg-II 3

JPL 600 00:42 11-10-2015 Still out Still out LOW SCHEDULE

89. जेपीएलJPL STG-I 1 JPL 250 11:00 27-11-2015 14:19 17.12-2015 LOW SCHEDULE90. जेपीएल

JPL STG-II 1JPL 600 19:56 03-12-2015 Still out Still out

COAL FEEDINGPROBLEM

91. बालको BALCO-3 BALCO 300 23:32 05-12-2015 03:33 12-12-2015 LEAKAGE IN SPRAYLINE92. बालको BALCO-1 BALCO 300 09:34 11-12-2015 05:27 14-12-2015 BTL93. बालको BALCO-1 BALCO 300 12:16 25-12-2015 08:07 30-12-2015 BTL94. सीजीपीएल CGPL 20 CGPL 830 10:01 14-12-2015 23:18 24-12-2015 BOILER MFT95.

KWPCL 1KWPCL 600 00:06 12-12-2015 23:39 02-01-2016 LESS SCHEDULE

96.KSK MAHANADI 2

KMPCL 600 20:24 28-12-2015 Still out Still out ID FAN PROBLEM

97. ससान SASAN 6 SASAN 660 23:18 03-12-2015 03:30 09-12-2015 AIR PRE HEATERPROBLEM98. ससान SASAN 6 SASAN 660 00:28 17-12-2015 01:29 21-12-2015 FEED WATER FLOWORIFICE LEAKAGE.99. ससान SASAN 6 SASAN 660 14:34 29-12-2015 20:36 02-01-2016 APH PROBLEM100.

GMR CHHATISGARH 1GMR EMCO 685 00:38 17-12-2015 20:33 23-12-2015

FOR PREPARATION OFPG TEST

101. KAPS 2 NPCIL 220 14:09 01-07-2015 Still out Still outFEED WATER SIDEPROBLEM

102. TAPS 2 NPCIL 160 12:55 10-09-2015 Still out Still out REFUELLING OUTAGE

103. TAPS 3 NPCIL 540 18:10 31-12-2015 03:10 04-01-2016

TURBINE TRIPPEDWHEN KALWA-PADGHE-I TRIPPED ONFAULT

104. कावास KAWAS 2A NTPC 164 17:23 21-10-2015 Still out Still out LESS SCHEDULE105. कावास KAWAS 2B NTPC 164 13:34 26-10-2015 Still out Still out LOW SCHEDULE

106. मौदा MOUDA 2 NTPC 500 21:18 09-11-2015 Still out Still out RSD/LOW SCHEDULE107. गांधार

GANDHAR GT ST 1NTPC 219 22:33 09-11-2015 Still out Still out LOW SCHEDULE/RSD

108. गांधारGANDHAR GT ST 3

NTPC 219 21:25 10-11-2015 Still out Still out LESS SCHEDULE/RSD

109. कावास KAWAS 1A NTPC 164 13:30 11-11-2015 Still out Still out RSD/LOW SCHEDULE110. गांधार

GANDHAR GT ST 2NTPC 219 00:15 24-11-2015 Still out Still out LESS SCHEDULE

111. कावास KAWAS 1B NTPC 164 00:01 29-11-2015 Still out Still out LESS SCHEDULE/RSD112. मौदा MOUDA 1 NTPC 500 21:38 01-12-2015 Still out Still out RSD/LOW SCHEDULE113.

VSTPS 9NTPC 500 17:00 14-12-2015 17:10 20-12-2015

CLINKERINGPROBLEM

114.VSTPS 13

NTPC 500 08:45 24-12-2015 15:49 28-12-2015 BTL

115.VSTPS 8

NTPC 500 02:29 28-12-2015 15:38 31-12-2015 RSD

Note: Units out for more than 72 hrs are only included.

Annex-2.7

( )

,Power System Operation Corporation Ltd.(A wholly owned subsidiary company of POWERGRID)


2015Details of planned unit outages during the month of Dec. 2015

अनु

Sl.No

Unitसंघटक

Constituent/IPPमता

मेगावॉटCap.MW

सoFrom

समय

सoFrom

समय

कारणReason

Time Date Time Date

1.KORBA(W) -1

CSPTCL 210 04:36 13-11-2015 07:30 07-12-2015 AOH

2. KORBA EASTEXT(DSPM) 1

CSPTCL 250 23:35 19-12-2015 Still out Still out AOH

3.CHANDRAPUR 5

MAHAGENCO 500 18:50 27-12-2015 Still out Still out AOH

4. TORRENTPOWER D

TORRENT POWER 120 01:24 27-11-2015 07:00 12-12-2015 AOH

5.APL MUNDRA 8

ADANI POWER 660 00:16 29-11-2015 16:41 01-01-2016 AOH

6.VSTPS 12

NTPC 500 23:42 20-11-2015 23:22 16-12-15 AOH

(MW) From To1 GUVNL1.1 UTPS-3 3 200 1-Jan-16 30-Mar-16 COH + ESP Refurbishment1.2 UGPP Stage - 2 2 375 15-Jan-16 5-Feb-16 Major inspection1.3 WTPS 2 210 4-Feb-16 4-Mar-16 AOH1.4 DGEN 51 400 01/02/2016 07/02/2016 AOH1.5 DGEN 52 400 08/02/2016 14/02/2016 AOH1.6 DGEN 53 400 15/02/2016 18/02/2016 AOH

2

NIL

3 CSPGCL

3.1 KORBA EAST-2 2 50 23/01/2016 07/02/2016 AOH

3.2 KORBA WEST-3 3 210 01/02/2016 24/02/2016 AOH

44.1 TROMBAY 8 250 07.02.16 21.02.16 BOILER RECT. LPT & BEARING INSPECTION4.2 TROMBAY 6 500 26.02.16 30.03.16 AOH

5 Central Sector5.1 KORBA 1 210 26-Jan-16 29-Feb-16 BLR+HPT+IPT+DDCMIS+ESP R&M

5.2 VINDHYACHAL 6 200 15-Jan-16 18-Feb-16CAP+BLR+GEN+ESP R&M DVR REPLACEMENT WITHSTATIC VR

DETAILS OF MAINTENANCE PROGRAM OF GENERATING UNITS PROPOSED DURING JANUARY 2016 AND FEBRUARY 2016

Capacity Outage as per AnnualMaintenance Plan

Annexure- 3.1

MSPGCL

MPPGCL

ReasonS. No. Unit No.

SN KV Line From To Basis Reason System Agency TypeDate Time Date Time

1 400 Kolhapur-II Tie bay (408 Bay) at Mapusa SS 20-Jan-16 9:00 25-Jan-16 18:00 Cont. Complete OH of CB + AMP of Bay WRTS-1 WRTS-1 R2 400 Bhilai Bhadrawati # 1 20-Jan-16 8:00 19-Feb-16 18:00 Daily AR in Non auto mode for conducting PID. WRTS-I WRTS-I C3 400 Raipur Bhadrawati # 1 20-Jan-16 8:00 19-Feb-16 18:00 Daily AR in Non auto mode for conducting PID. WRTS-I WRTS-I C

4 400 Pune(GIS)-Pune # 1& 2 20-Jan-16 6:00 19-Feb-16 18:00 DailyOnline OPGW work. A/R to be kept in Non automode WRTML/WRTS-IWRTS-I C

5 400 Parli-Pune(GIS)# 1&2 20-Jan-16 8:00 20-Jan-16 18:00 DailyOverhead crossing by LILO of 400 KV D/cAurangabad-Pune line WRTS-I / WRTMPLWRTS-I C

6 765 Seoni-Wardha-1 20-Jan-16 6:00 19-Feb-16 18:00 DailyOnline OPGW work. A/R to be kept in Non automode WRTS-I WRTS-I C

7 400 Solapur-Parli # 1& 2 20-Jan-16 6:00 19-Feb-16 18:00 DailyOnline OPGW work. A/R to be kept in Non automode WRTML WRTS-I C

8 400 Bhadrawati-Parli-1 & Bhadrawati - Dhariwal-Parli # 2 20-Jan-16 6:00 19-Feb-16 18:00 DailyOPGW Auto reclose shall be kept in Non automode . WRTS-I WRTS-I C

9 400 Solapur-Kolhapur-1&2 20-Jan-16 6:00 19-Feb-16 18:00 DailyOnline OPGW work. A/R to be kept in Non automode WRTML WRTS-I C

10 765 Seoni-bina 20-Jan-16 6:00 19-Feb-16 18:00 DailyOnline OPGW work. A/R to be kept in Non automode POWERGRIDWRTS-I C

11 765 D/C Wardha - Aurangabad Transmission line, CKT II 20-Jan-16 0:00 21-Jan-16 17.00 Continues Jumper Tightening work. WRTS-I WRTS-I C

12 HVDCCWD DIA 30 Q 50 ( Tie bay of Pole I South side andFilter )at Bhadrawati

20-Jan-16 9:00 20-Jan-16 17:00 Daily AMP work WRTS-I WRTS-I R13 400 400KV Parli-Parli (MSETCL)-1 Line 20-Jan-16 9:00 20-Jan-16 18:00 Daily For AMP works at POWERGRID & MSETCL WRTS-I POWERGRIDR14 765/400 ICT-1 at Pune GIS 20-Jan-16 9:00 20-Jan-16 18:00 Daily AMP of ICT-1 WRTS-I WRTS-I R

15 400 /220 400 /220 KV ICT # 1 at Wardha 20-Jan-16 9:00 20-Jan-16 18:00 DailyVariable frequency tan delta measurement ofBushings WRTS-I WRTS-I R

16 220207 Bay (220KV Talegaon MSETCL Line # 2) atPune (PGCIL)

20-Jan-16 9:30 20-Jan-16 13:30 Daily AMP WRTS-I WRTS-I R17 400 400KV Solapur Parli I Line 20-Jan-16 9:00 20-Jan-16 18:00 Daily AMP of Line terminal equipments WRTS-I WRTS-I R

18 765 Solapur-2 L/R (Switchable) at Aurangabad 20-Jan-16 9:00 20-Jan-16 18:00 Dailyfor attending Oil leakage from R-ph Unit andReactor CB AMP works WRTS-I WRTS-I R

19 400 400 KV Wardha-Akola 1 20-Jan-16 9:00 20-Jan-16 18:00 DailyInsulator replacement for Railways and NHcrossings

WRTS-I WRTS-I C

Outage Planning of Transmission elements during the Duration 20.01.2015 to 19.02.2016ANNEXURE 3.2

19 400 400 KV Wardha-Akola 1 20-Jan-16 9:00 20-Jan-16 18:00 DailyInsulator replacement for Railways and NHcrossings

WRTS-I WRTS-I C

20 400Transmission Line (Tamnar Pooling-TRN D/C ), Line-II

20-Jan-16 9:00 25-Jan-16 18:00 contPreventive maintenance ,Tightening of jumpers,Clamps & Connectors TRN ENERGYTRN ENERGY

21 400 400/220 KV ICT-3 AT SUGEN 20-Jan-16 9:00 20-Jan-16 18:00 Daily ICT 3 Bay Meter Calibration, Maintenance &Offline washing TPL-SUGENTPL-SUGENR

22 400 400KV Transfer Bus AT SUGEN 20-Jan-16 9:00 20-Jan-16 18:00 Daily Maintenance of Bus Isolator 414-89T of ICT 3. TPL-SUGENTPL-SUGENR

23 765 765 KV SASAN-SATNA Line-1 Reactor 20-Jan-16 9:00 23-Jan-16 18:00 ContinuousFor Air Cell Replacement , Oil Leakage arrestingAnnual Testing .

SASAN RELIANCE

24400 400KV Switching Ckt-I(bay 401) at 400KV

Chandrapur-II s/s20-Jan-16 10:00 20-Jan-16 18:00 Daily DCRM work & allied bay maintenance work MSETCL MSETCL

25 400/220 400/220KV ICT-II at Karad ss 20-Jan-16 10:00 20-Jan-16 17:00 Daily Qurtly. Maint. work MSETCL MSETCL26 400 Padgha-Kalwa ckt-1 20-Jan-16 7:00 19-Feb-16 19:00 Daily 48F OPGW Stringing work . MSETCL MSETCL27 220 KAPS Haldarwa Line-1 20-Jan-16 8:00 20-Jan-16 20:00 Continuos Line feeder equipment PM alongwith Bus-II PM. KAPS NPCIL28 400 SSP - Rajgarh - 2 20/Jan/16 8:00 21/Jan/16 18:00 Daily Maintenance work GETCO GETCO29 220 Bhilad - Vapi (P

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