Government of India kond`Iya ivaVut p`aiQakrNa … · Sub.: Agenda Notes of the ... HVPNL letter...

Baart sarkar

Government of India kond`Iya ivaVut p`aiQakrNa

Central Electricity Authority piScama xao~Iya ivaVut saimait

Western Regional Power Committee ef -3, emaAayaDIsaI xao~, AMQaorI (pUva-), mauMba[- - 400 093

F-3, MIDC Area, Andheri (East), Mumbai - 400 093

Aa[- esa Aao : 9001-2000 ISO : 9001-2000

dUrBaaYa Phone: 022- 28221636; 28200194/95/96; fO@sa Fax : 022 – 28370193 Website : www.wrpc.nic.in E-mail : [email protected]

¬¸¿.: ¬¸í¸.¬¸¢�¸./ˆÅ¸¡¸Ä¬¸»�¸ú/œ¸®¸½¢¨¸¬¸/2007/9151 ¢™›¸¸¿ˆÅ: 22 ¢¬¸÷¸Ÿ¤¸£ 2007 No.: A.S./Agenda/WRPC/2007/ Date: ¬¸½¨¸¸ Ÿ¸½¿ / To,

(¬¸¿¥¸Š›¸ ¬¸»�¸ú ˆ½Å ‚›¸º¬¸¸£) (As per enclosed list) ¢¨¸«¸¡¸: 6 ‚Æ’»¤¸£ 2007 ˆÅ¸½ Š¸¸½¨¸¸ Ÿ¸½¿ ‚¸¡¸¸½¢�¸÷¸ í¸½›¸½ ¨¸¸¥¸ú œ¸¢©�¸Ÿ¸ ®¸½°¸ú¡¸ ¢¨¸Ô¸º÷¸ ¬¸¢Ÿ¸¢÷¸ ˆÅú œ¸¸Â�¸¨¸ú ¤¸¾“ˆÅ

ˆÅú ˆÅ¸¡¸Ä¬¸»�¸ú— Sub.: Agenda Notes of the 5th meeting of Western Regional Power Committee to be held

on 6 th October 2007 at Goa.

¬¸¿™ž¸Ä: ƒ¬¸ ˆÅ¸¡¸¸Ä¥¸¡¸ ˆÅ¸ œ¸°¸ ÇÅ. ¬¸í¸.¬¸¢�¸./¤¸¾“ˆÅ-¬¸»�¸›¸¸/œ¸®¸½¢¨¸¬¸/2007/8799 ¢™›¸¸¿ˆÅ 12 ¢¬¸÷¸Ÿ¤¸£ 2007

Ref.: Our office letter No. A.S./Meeting-Notice/WRPC/2007/8799 dated 12th Sept.,2007 Ÿ¸í¸½™¡¸ / Sir,

ƒ¬¸ ˆÅ¸¡¸¸Ä¥¸¡¸ ˆ½Å ¬¸¿™¢ž¸Ä÷¸ œ¸°¸ ˆÅú ¢›¸£›÷¸£÷¸¸ Ÿ¸½¿ ¢™›¸¸¿ˆÅ 6 ‚Æ’»¤¸£ 2007 ˆÅ¸½ Š¸¸½¨¸¸ Ÿ¸½¿ í¸½›¸½ ¨¸¸¥¸ú œ¸¢©�¸Ÿ¸ ®¸½°¸ú¡¸ ¢¨¸Ô¸º÷¸ ¬¸¢Ÿ¸¢÷¸ ˆÅú œ¸¸Â�¸¨¸ú ¤¸¾“ˆÅ ˆÅú ˆÅ¸¡¸Ä¬¸»�¸ú ƒ¬¸ œ¸°¸ ˆ½Å ¬¸¸˜¸ ¬¸¿¥¸Š›¸ í¾ —

In continuation of the above referred letter please find enclosed herewith the Agenda notes of 5th meeting of Western Regional Power Committee to be held at Goa on 6th October 2007.

¤¸¾“ˆÅ ˆ½Å ¬˜¸¥¸ ‡¨¸¿ ¬¸Ÿ¸›¨¸¡¸ ‚¢š¸ˆÅ¸¢£¡¸¸½¿ ˆ½Å ¤¸¸£½ Ÿ¸½¿ �¸¸›¸ˆÅ¸£ú ©¸ú‹Ï íú ž¸½�¸ú �¸¸¡¸½Š¸ú — ˆ¼Åœ¸¡¸¸

¤¸¾“ˆÅ Ÿ¸½¿ ž¸¸Š¸ ¥¸½¿ — The details of Venue and Coordinating Officers of the meeting will be sent shortly.

Kindly make it convenient to attend the meeting. ž¸¨¸™ú¡¸ / Yours faithfully, sd/-

(œ¸ú. œ¸’½¥¸ / P. Patel) ¬¸™¬¡¸ ¬¸¢�¸¨¸ / Member Secretary ¬¸¿¥¸Š›¸ /Encl.: „œ¸£¸½Æ÷¸¸›¸º¬¸¸£ / AS Above

Mailing List

Member of WRPC

1. Chairman, WRPC / CSEB, Raipur

2. Member (GO & D), CEA, New Delhi

3. Managing Director, GETCO, Vadodara

4. Managing Director, GSECL, Vadodara

5. Managing Director, Dakshin Gujarat Vij Company Ltd., Surat

6. Chairman & Managing Director, MPPTCL, Jabalpur

7. Chairman & Managing Director, MPPGCL, Jabalpur

8. CMD, M.P. Madhya Kshetra Vidyut Vitaran Co. Ltd., Bhopal

9. Managing Director, MSETCL, Mumbai

10. Managing Director, MSEDCL, Mumbai

11. Managing Director, MSEGCL, Mumbai

12. Chief Engineer (T & C), CSEB, Raipur

13. Chief Engineer (LD), GETCO, Vadodara

14. Chief Engineer (LD), MPPTCL, Jabalpur

15. Chief Engineer (LD), MSETCL, Kalwa

16. Director (Comml), NTPC Ltd., New Delhi/ Executive Director (WR), NTPC Ltd.,

Mumbai

17. Director (Operation), PGCIL, Gurgaon / Executive Director (WR), PGCIL, Nagpur

18. Director (Operation), NPCIL, Mumbai

19. Secretary (Power), UT of Daman & Diu, Sachivalaya, Moti Daman

20. Secretary (Power), UT of Dadar Nagar Haveli, Silwasa

21. Executive Director, Tata Power Company Ltd., Mumbai

22. Chief Executive Officer, Tata Power Trading Company Ltd., Mumbai

Special Invitees

1. Chairman, GUVNL, Vadodara

2. Chairman & Managing Director, MP Power Trading Company Ltd., Jabalpur

3. Managing Director, MSEB holding Company Ltd., Mumbai

4. Member (Power System), CEA, New Delhi

5. Member (Power), NCA, Indore

Copy to

1. Member (T & D), CSEB, Raipur

2. Member (Gen.), CSEB, Raipur

3. Chief Engineer (T & C), CSEB, Bhilai

4. Chief Engineer (Comml.), CSEB, Raipur

5. General Manager (Comml.), GUVNL, Vadodara

6. Addl. Chief Engineer (R & C), GETCO, Vadodara

7. Executive Director, GSECL / Chief Engineer (Gen.), GSECL, Vadodara

8. Addl. Chief Engineer (O & M), Dakshin Gujarat Vij Company Ltd., Surat

9. Executive Director (Comml.), MP Power Trading Company Ltd., Jabalpur

10. Chief Engineer (O & M-Gen.), MPPGCL, Jabalpur

11. Director (Operation), MSETCL, Mumbai

12. Director (Operation), MSEDCL, Mumbai

13. Director (Operation), MSPGCL, Mumbai

14. Executive Director (Trans. Proj.), MSETCL, Mumbai

15. Chief Engineer (P & P), MSEDCL, Mumbai

16. General Manager (Trans.), NPCIL, 9th Floor, Anushakti Nagar, Mumbai

17. Chief Engineer (GM), G.M. Division, CEA, New Delhi

18. General Manager (O & M), WRTS, PGCIL, Nagpur

19. General Manager, WRLDC, Mumbai

20. Superintending Engineer (Comml.), Goa

21. Executive Engineer, DD

22. Executive Engineer, DNH

23. Dy. General Manager, Tata Power Company, Ltd., Mumbai

24. Member Secretary, NRPC, New Delhi

25. Member Secretary, ERPC, Kolkata

26. Member Secretary, SRPC, Banglore

27. Member Secretary, NERPC, Shillong

Baart sarkar Government of India kond`Iya ivaVut p`aiQakrNa

Central Electricity Authority piScama xao~Iya ivaVut saimait

Western Regional Power Committee

œ¸®¸½¢¨¸¬¸ ˆÅú ¢™›¸¸¿ˆÅ 6 ‚Æ’»¤¸£ 2007 ˆÅ¸½ Š¸¸½¨¸¸ Ÿ¸½¿ ‚¸¡¸¸½¢�¸÷¸ ˆÅú �¸¸›¸½Å¨¸¸¥¸ú œ¸¸Â�¸¨¸ú ¤¸¾“ˆÅ ˆÅú ˆÅ¸¡¸Ä¬¸»�¸ú AGENDA NOTES OF 5TH MEETING OF WRPC TO BE HELD ON 6TH OCTOBER 2007 AT GOA

Ÿ¸º¿¤¸ƒÄ MUMBAI

Agenda Notes for 5th WRPC meeting to be held on 6th October 07

C O N T E N T S Item No. Particulars

Page No.

ITEMS FOR DISCUSSION ITEM No.1 CONFIRMATION OF THE MINUTES OF THE 4th MEETING OF WRP

COMMITTEE 1

ITEM No.2 SYNCHRONOUS CONDENSER MODE OF OPERATION OF SSP UNITS

1

ITEM No.3 APPORTIONMENT OF ER-NTPC SCHEDULE ENERGY ON ER-WR LINKS

3

ITEM No.4 NEW TRANSMISSION SCHEMES IN WESTERN REGION 4 4.1 TRANSMISSION SYSTEM FOR EVACUATION OF POWER FROM

KRISHNAPATANAM UMPP (4000 MW) AND REQUIREMENTS FOR ADDITIONAL TRANSMISSION CAPACITY BETWEEN SR-WR

4

4.2 TRANSMISSION SYSTEM FROM THE NEW GENERATION CAPACITY PLANNED BY DVC TOGETHER WITH REVIEW OF TRANSMISSION SYSTEM ASSOCIATED WITH NORTH KARANPURA (3X600 MW) AND MAITHON RB (1000MW)

6

ITEM No.5 ANTICIPATED REQUIREMENT OF SEMs AND DCDs FOR THE PERIOD 2008 TO 2010

7

ITEM No.6 BACKUP COMMUNICATION LINKS FROM SLDCs & STRATEGIC LOCATIONS IN THE NETWORKS OF ULDC SCHEME

8

ITEM No.7 PERFORMANCE OF WR GRID DURING JUNE 2007 TO SEPTEMBER 2007

9

ITEM No.8 TELEMETRY OF DATA FROM INDIRA SAGAR AND SARDAR SAROVAR HYDRO ELECTRIC PROJECTS

11

ITEM No.9 ANTICIPATED POWER SUPPLY POSITION FOR THE PERIOD OCTOBER 2007 TO DECEMBER 2007

12

ITEMS FOR INFORMATION ITEM No.10 COMMISSIONING OF TRANSMISSION LINES AND GENRATING

UNITS 13

ITEM No.11 ONGOING TRANSMISSION SCHEMES IN WESTERN REGION 14 ITEM No.12 ONGOING GENERATION SCHEMES IN WESTERN REGION 15 ITEM No.13 INTER-REGIONAL TRANSMISSION SYSTEM FOR EXPORT OF

POWER FROM NER TO NR/WR AND POWER EVACUATION SYSTEM IN NER FOR SUBANSIRI LOWER HEP (2000MW) AND KAMENG HEP (600 MW)

16

ITEM No.14 TRANSMISSION SYSTEM FOR POWER EVACUATION FROM SASAN (5x800 MW) AND MUNDRA (5x800 MW)ULTRA MEGA PROJECTS

17

ITEM No.15 PAYMENTS OF UI AND REACTIVE ENERGY CHARGES 19 ITEM No.16 ANY OTHER ITEM WITH PERMISSION OF CHAIR 20 ITEM No.17 DATE AND VENUE OF NEXT WRPC MEETING 20


ANNEXURES

Annexure

Particulars

Annexure-1 M.P. Power Trading Company Ltd. Letter dated 07.08.2007

Annexure-4.1 Extract from the minutes of 27th meeting of Standing Committee

Annexure-5

Location and requirements of Special Energy Meters

Annexure-7.1 (a) Frequency particulars of Western Region for the period June, 2007 to September, 2007

Annexure-7.1 (b) Power Position for period from June, 2007 to September, 2007

Annexure-7.1 (c) Recommendations made by Enquiry Committee on grid disturbance

Annexure- 7.1 (d) Chairman, NRPC & MD, HVPNL letter dated 12.07.2007 Annexure 7.2 Detail of voltages at important 400 kV substations during June, 2007

to September 2007

Annexure-9 Anticipated power supply position in the region for the period from October 2007 to December 2007

Annexure-11 Status of construction of transmission lines in WR during 2007-08

Annexure-12 New generation schemes envisaged during 11th Plan in WR

Agenda Notes for 5th WRPC meeting to be held on 6th October 07 1

AGENDA NOTES FOR 5th MEETING OF WESTERN REGIONAL POWER COMMITTEE TO BE HELD ON 6th OCTOBER 2007 AT GOA

ITEMS FOR DISCUSSIONS

ITEM No.1: CONFIRMATION OF THE MINUTES OF THE 4th MEETING OF WRP

COMMITTEE The minutes of 4th meeting of WRP Committee held on 29th June 2007 at Vadodara

were sent to the Members vide letter No. A.S./Min./WRPC/2007-08/6769 dated

24th July 2007.

Executive Director (L &RA), M.P. Power Trading Company Ltd. vide letter dated

07.08.2007 (copy enclosed at Annexure-I) had requested modifications in Item

Nos. 1 and 14 of the minutes.

The Committee may discuss and confirm the minutes of the meeting. ITEM No.2: SYNCHRONOUS CONDENSER MODE OF OPERATION OF SSP

UNITS

2.1 The WRP Committee in its 4th meeting held on 29th June 2007 considered the

earlier recommendation made by Commercial Committee in the 46th CCM regarding

accounting of quantum of power drawn for synchronous condenser mode of

operation of generating units at SSP and sharing of the same by Madhya Pradesh,

Maharashtra & Gujarat in the ratio of 57:27:16 (ratio for sharing of power as per

Tribunal award) till such time any other methodology for accounting of this power is

evolved. During the meeting MP Power Trading Co. Ltd representative suggested

that till such time the final methodology for accounting of this power is evolved, the

weekly UI & Reactive energy accounts and monthly Regional Energy accounting

reflecting SSP active and reactive energy generation should be done as above on

provisional basis. The WRP Committee agreed to the above suggestion and

requested NCA to resolve the matter on priority.

2.2 In order to evolve a methodology for accounting of energy consumed by SSP

units during synchronous condenser mode of operation, NCA studied the practice


being followed in this respect by other similar generating units. It was observed that

generating units at Pong Hydro Station of BBMB in Northern Region have been

operating in synchronous condenser mode to improve the voltage profile. According

to methodology approved by NRE Board, energy drawn by Pong units during

synchronous condenser mode is treated as loss in NR system. The Main SEMs are

installed on HV side of the GTs at Pong HEP and Energy Sent Out (ESO) of the

power station in each 15 minutes time-block is determined from readings of only

those Main SEMs, which recorded export of energy into the grid. The Main SEMs

recording import of energy would indicate operation of the concerned generating

units in synchronous condenser mode and hence, their readings would be ignored

for the purpose of determining the ESO. This arrangement was agreed and

approved by NRE Board in June 2004 and made effective from prospective date. It

was also agreed by NR to implement the same methodology for Ranjit Sagar Dam

HEP of PSEB, a shared generation project of Punjab, HP and J&K, which at times

being operated in synchronous condenser mode.

2.3 The above practice in vogue in NR was discussed in 41st Power Sub-

Committee meeting of NCA held on 27th Aug. 2007. The Sub-Committee proposed

that the practice being followed by NRPC in respect of accounting of active power

drawal for synchronous condenser operation in Pong HE station of BBMB may be

adopted for SSP i.e the active power consumed for the generating machine at

RBPH for condenser mode operation shall be considered as losses and will be

pooled along with WR grid loss and shared in the same manner as actual

transmission losses are being shared. It was also agreed that the above proposal

would be applicable from prospective date.

2.4 The above proposal of NCA for accounting of quantum of power drawn for

synchronous condenser mode of operation of generating units at SSP was further

deliberated in 47th meeting of Commercial Committee held on 19th Sept. 2007 and

Committee agreed to the same i.e the active power drawn for synchronous

condenser operation of SSP complex could be treated as system loss of WR grid

which shall be shared by all WR beneficiaries in manner in which actual

transmission losses are being shared. This arrangement will be made applicable

prospectively.

WRP Committee may discuss and endorse the above arrangement.


ITEM No. 3: APPORTIONMENT OF ER-NTPC SCHEDULE ENERGY ON ER- WR LINKS

3.1 The energy exchange (import/export) between ER & WR is taking place

through WR-ER A.C. links i.e 400 kV Rourkela- Raipur D/C and 220 kV Budhipadar-

Korba (East) T/C lines. 400 kV Rourkela- Raipur D/C and 220 kV Budhipadar-Korba

(East) Ckt-III are owned by PGCIL and the transmission charges are shared on

50:50 basis by constituents of WR & ER. The 220 kV Budhipadar-Korba (East) Ckt-I

& II is owned by CSEB/OPTCL. Constituents of WR are paying wheeling charges to

CSEB/OPTCL for ER-NTPC scheduled energy wheeled over Korba-Budhipadar 200

kV Ckt.-I & II. As per the agreed methodology, apportionment of scheduled energy

import from NTPC stations in ER to WR beneficiaries is being done in proportion to

actual net monthly energy import over 400 kV Raipur-Rourkela D/C lines and 220 kV

Korba-Budhipadar T/C.

3.2 Earlier generally there used to be import of power from ER on all the inter-

regional lines. However, with synchronous operation of Northern Regional Grid with

WR-ER-NER grid especially after commissioning of 765 kV Agra-Gwalior line, the

pattern of power flow from ER to WR has changed. Now the direction of power flow

on 400 kV and 220 kV lines sometimes is in opposite directions also.

3.3 In the month of June 2007, total energy import schedule from NTPC stations

in ER to WR beneficiaries was 140.281 MUs. The actual energy exchange on 400

kV Rourkela-Raipur D/C was 395.118 MUs import whereas on 200 kV Budhipadar-

Korba Ckt-I, II & III there was net export of 31.360 MUs towards ER. Accordingly, in

the REA for June, 2007 the apportionment of schedule for claiming of wheeling

charges was shown as under:

Line Actual Flow

(Mus)

Apportionment of schedule from ER NTPC station (Mus)

400 kV Rourkela-Raipur D/C 395.118 143.040

200 kV Korba-Bhdhipadar Ckt-I, II & III (-) 31.360 (-) 2.759

Total 363.758 140.281

3.4 In this context, Dy. GM (Tariff), Orissa Power Transmission Co. Ltd. (OPTCL)

vide letter dated 13.8.2007 raised a quarry as to whom OPTCL will serve its


transmission charge bill for June 2007 towards billing of wheeling charges for flow of

power from ER to WR as the power flow through the same is negative i.e. 2,759,305

kWh from WR to ER.

3.5 In view of the changed scenario in power flow on the ER-WR links after

synchronous operation of Northern Regional Grid with WR-ER-NER grid and in

order to address the situation has in June, 2007, the procedure for the

apportionment of the ER-NTPC scheduled energy over 400 kV & 220 kV lines needs

revision.

3.6 This was discussed in detail during 47th meeting of Commercial Committee

held on 19th Sept. 2007 wherein a revised methodology for apportionment of ER-

NTPC scheduled energy on ER-WR links was agreed to. It was agreed that instead

of net import/export over 400 kV & 220 kV lines, the accounting of NTPC (ER)

scheduled energy wheeled over these lines should be apportioned in the ratio of

actual import over individual lines. Any export towards ER would not be considered

for payment of wheeling charges. Accordingly, the apportionment of scheduled

energy import from NTPC stations in ER to WR beneficiaries will be done in

proportion to actual energy import line wise i.e 400 kV Raipur-Rourkela Ckt-I, 400 kV

Raipur-Rourkela Ckt-II, 220 kV Korba-Raigarh-Budhipadar Ckt-I, 220 kV Korba-

Budhipadar Ckt-II and 220 and 220 kV Korba- Budhipadar Ckt-III. Based on above,

Orissa Power Transmission Co. Ltd will have to raise the bill to the extent of energy

apportioned to 200 kV Korba-Raigarh-Budhipadar Ckt-I and Korba- Budhipadar

Ckt-II. It was suggested that the calculation for the month of June 2007 shall be

revised based on the above proposal.

WRP Committee may discuss and approve the above methodology. ITEM No. 4: NEW TRANSMISSION SCHEMES IN WESTERN REGION

4.1. TRANSMISSION SYSTEM FOR EVACUATION OF POWER FROM

KRISHNAPATANAM UMPP (4000 MW) AND REQUIREMENTS FOR ADDITIONAL TRANSMISSION CAPACITY BETWEEN SR-WR

The transmission system for evacuation of power from Krishnapatanam UMPP

(4000 MW) was discussed in the 27th meeting of Standing Committee on power


system planning in Western Region held on 30th July, 2007. The allocation of

800 MW have been proposed from this project to Maharashtra. It was intimated in

the meeting that considering the additional generation being taken up in Southern

Region, the exportable surplus of SR in 2013-14 would be 6700 MW during peak

hours and 12000 MW during off-peak hours of winter months. This surplus power

would be utilized in WR & NR. Accordingly, the transmission system between SR &

WR was planned for evacuation of power from Krishnapatanam UMPP as well as

transfer of surplus power from SR to WR/NR. The abstract from the minutes of

27th meeting of Standing Committee on this scheme is enclosed at Annexure 4.1.

The transmission system in brief is as follows:-

Scheme-A: Increasing SR-WR Inter-Regional Transmission Capacity through HVDC back-to-back.

This scheme comprises of following two elements and transmission charge would be

shared by SR and WR Constituents on 50:50 basis.

1) Narendra-Kohlapur 400 kV D/C line.

2) 1000 MW HVDC back-to-back station at Narendra ( or at Kolhapur, to be decided

based on land availability) of which 500 MW would be through shifting of

equipment from Sasaram.

Scheme-B: Synchronous Inter-connection of SR and WR.

This scheme comprises of the following elements, transmission charges for which

would be shared by SR and WR Constituents on 50:50 basis.

1) Raichur – Sholapur 765 kV S/C line-1.

Scheme-C: Evacuation System for Krishnapatanam UMPP

This scheme comprises of the following elements, transmission charges for which

would be shared by all the beneficiaries of Krishnapatanam UMPP in ratio of their

shares in the project.

1) Krishnapatanam UMPP – Nellore 400 kV, Quad D/C line.

2) Krishnapatanam UMPP – Kurnool 400 kV, Quad D/C line.


3) Krishnapatanam UMPP – Gooty 400 kV, Quad D/C line.

4) Raichur-Sholapur 765 kV S/C line-2.

5) Sholapur – Pune 765 kV S/C line.

6) Kurnool – Raichur 765 kV S/C line.

7) 765kV substations at Kurnool, Raichur, Sholapur and Pune, with 765/400 kV 3000 MVA transformers at each of the substations.

8) Inter-linking of Raichur 765 kV(PG) S/S with Raichur (KPTCL) 400 kV S/S.

Scheme-D : System strengthening in Western Region corresponding to power

from Krishnapatanam UMPP.

This scheme comprises of the following element. Transmission charges for this

scheme would be shared by WR Constituents as regional pooled transmission

charges together with WR share from Krishnapatanam UMPP considered for revised

ratio for sharing of WR pooled transmission charges.

1) Pune (WR) – Navi Mumbai (WR) 400 kV D/C line.

Target dates of commissioning for Scheme A would be June/December 2010 and for

Schemes B, C & D would be to match with the Krishnapatanam UMPP project.

Members may kindly discuss and concur. 4.2: TRANSMISSION SYSTEM FROM THE NEW GENERATION CAPACITY

PLANNED BY DVC viz. KODERMA TPS (2X500 MW), BOKARO-A (1x500 MW), MEJIA-B (2x500 MW), DURGAPUR STEEL(2x500 MW) AND RAGHUNATHPUR TPS (2x500 MW) TOGETHER WITH REVIEW OF TRANSMISSION SYSTEM ASSOCIATED WITH NORTH KARANPURA (3x660 MW) AND MAITHON RB (1000 MW)

In the 27th meeting of Standing Committee, it was intimated that DVC was

undertaking new generation projects totaling to 4500 MW out of which 3600 MW and

500 MW are proposed to be exported to Northern & Western Region respectively. In

view of this, the transmission system for North Karanpura and Maithon RB agreed

earlier were reviewed. It was also intimated in the meeting that additional generation

of more than 7000 MW (in early 12th Plan) was being envisaged in Orissa from

where most of the power would actually be utilised in WR.


It was intimated in the meeting that based on the studies carried out, need for

765 KV pooling stations at Ranchi for Western Region and at Gaya and Sasaran for

Northern Region was established. From Ranchi Pooling Station, towards Western

Region 2xS/C 765 kV lines were proposed up to Sipat Pooling station. It was

informed that in earlier meeting of Standing Committee, one 765 kV S/C line was

proposed from North Karanpura to Sipat (PP). However, in the absence of 765 kV

voltage level at North Karanpura, pooling station at 765 kV at Ranchi had been

proposed. The 765 kV interconnection between Ranchi and Sipat (PP) was

proposed in addition to Ranchi-Sipat 400 kV D/C line which was already under

construction.

After discussions, the proposal for one 765 kV line between Ranchi and Sipat (PP)

together with 765 kV substations at Ranchi and Sipat (PP) and also the 765 kV

interconnection to Sipat (PP) either through LILO of one of the Sipat-Seoni 765 kV

S/C line or through a separate Sipat-Sipat (PP) 765 kV S/C line was agreed and it

was agreed that in case the proposal on Ranchi-Sipat (PP) corridor was required to

be further enhanced, this would be taken up in the next Standing Committee meeting

of WR.

It was also agreed that proposal for further strengthening of ER-WR corridor and

east-west strengthening within WR in the context of Orissa and Chhattisgarh

generation projects would be further studied and discussed in the next meeting.

Members may kindly discuss and concur. ITEM No. 5: ANTICIPATED REQUIREMENT OF SEMs AND DCDs FOR THE

PERIOD 2008 TO 2010

WRLDC have estimated the requirement of Special Energy Meters (SEMs) and Data

Collection Devices (DCDs) for the years 2008, 2009 and 2010 considering the new

projects coming in Western Region under various schemes. The details of metering

locations, metering arrangement alongwith schematic diagrams furnished by

WRLDC vide letter dated 12th September 2007 is enclosed at Annexure – 5. Total

requirement of SEMs has been estimated as 116 Nos. and total number of data

collecting devices (DCDs) as 32 Nos. which includes spares @ of 20%.


The above matter was discussed in 47th meeting of Commercial Committee held on

19th Sept. 2007 and the Committee accorded their approval for procurement of 116

Nos. SEMs and 32 Nos. DCDs, the cost of which will be reimbursed by the

beneficiaries of WR to PGCIL in lump-sum in line with the earlier decisions of WRE

Board / WRP Committee.

WRP Committee may like to endorse the above. ITEM No.6: BACKUP COMMUNICATION LINKS FROM SLDCs & STRATEGIC

LOCATIONS IN THE NETWORKS OF ULDC SCHEME

ULDC (SC & C) Scheme has been implemented in WR and is in operation at

present. WRLDC vide letter dated 20.09.2007 have informed that initially, a linear

communication network without the route diversity was designed in order to minimize

the cost as per the CEA advise. As such, disruption at any of the intermediate node

results in the interruption of data flow from the affected areas to SLDCs and RLDC.

On constant persuasion from WRLDC, subsequently two protection paths via Itarsi-

Dhule and Chandrapur-Padge-Kalwa to WRLDC have been provided. However, it

has been observed that at times these paths are also not proving adequate due to

failures of equipment resulting in loss of partial/entire data. In addition the

underground fibre from Asoj to Mumbai regularly experiences fibre cuts all along the

route including Mumbai city.

In order to improve the data reliability from SLDCs to RLDC and vice versa a

Committee formed with representatives of LD & C, System Operation & Telecom

Dept. of POWERGRID recommended standby arrangements from SLDCs and

strategic locations, viz., Vindhyachal, Bhadrawati & Raipur and radio links from

Kalwa to WRLDC, Mumbai. Bandwidths would be availed through 7 numbers of E1s

for standby links. The total cost of the aforesaid proposal as intimated by WRLDC is

as below:

(i) Recurring expenditure of approx. Rs. 23.10 Lakhs per year for the above

proposed standby arrangement and

(ii) One time expenditure of approx. Rs. 4.00 Lakhs towards cost for radio

links from Kalwa to WRLDC, Mumbai


With the above arrangement, it is expected that reliability of data communication

between WRLDC and SLDCs would improve. WRLDC proposed to recover the

above cost from constituents as a part of O & M charges under ULDC.

WRP Committee may like to discuss and accord approval for the same. ITEM No.7: PERFORMANCE OF WR GRID DURING JUNE 2007 TO

SEPTEMBER 2007 7.1: System Performance

7.1.1. During the period June 2007 to September 2007, the grid operated in the

frequency range 49.0 Hz and 50.5 Hz for 97.43% of time. The percentage time,

when the frequency was within this range varied between 96.23% and 98.55%.

During June 2007, frequency remained below 49.0 Hz. for 3.59% of time. The details

of frequency profile during the above period is enclosed at Annexure-7.1(a).

7.1.2. The details relating to registered demand/unrestricted demand, energy

availability and energy requirement during the above period are at Annexure-7.1(b).

The maximum unrestricted demand of the region was 32979 MW as recorded during

June 2007. The maximum demand met during this period was 27535 MW, which

was registered during September 2007. The peak shortfall of the Western Region

ranged from 4008 MW to 7138 MW. Capacity shortage during this period was of the

order of 12.71% to 21.64 % and Energy shortage was in the range of 4.23% to

10.15 %.

7.1.3. As intimated in the last WRPC meeting, two partial grid disturbances had

taken place in the Region in Feb 2007 i.e. one on 25th February 2007 and the other

on 28th February 2007. CEA had constituted an inquiry Committee to look into these

incidences. The Committee submitted its report to CEA on 23.08.2007 and upon

acceptance by it, the same was circulated to WR constituents and all other

concerned utilities vide WRPC letter No. WRPC/Opn/Grid Disturbance/2007/8134

dated 30.8.2007 for needful action. The recommendations made by the committee

are at Annexure- 7.1(c).


7.1.4. As reported in the last meeting of WRPC, Chairman WRPC/CSEB had taken

up the matter regarding overdrawals by NR with the Chairman, NRPC, vide letter

dated 8th June, 2007. Chairman, NRPC was requested therein to suitably advise NR

utilities to restrict overdrawls from the interconnected grid at low frequency which

had been resulting operation of UFRs and interruption of power supply to the

consumers in WR grid, Chairman NRPC & MD, HVPNL vide letter dated 12.07.2007

(copy enclosed at Annexure 7.1 (d)) agreed that due to unexpectedely hot weather

during first week of June 2007, NR had overdrawn from the grid and said that under

frequency relays had operated in various NR states during that period giving load

relief. He added that besides this, NRLDC had taken adequate load regulatory

measures in UPPCL, PSEB and HVPNL systems. He assured that NRPC and

NRLDC will continue to take up the matter in all earnest with the defaulting utilities to

restrict their overdrawls in the interest of grid security.

7.1.5. In pursuance of the decision taken in 4th WRPC meeting held on 29th June

2007, Chairman, WRPC/CSEB vide letter dated 30.08.2007 had taken up with

Chairman & Managing Director, PGCIL requesting for his cooperation in making the

NLDC fully operational as early as possible so that NLDC could be able to play more

active role to deal with the problems encountered during the inter-regional

interconnected operation in the real-time.

The Committee may like to discuss. 7.2. Voltage Profile

The month-wise detail of voltages at important 400 kV substations during the month

of June 2007 to September 2007 is at Annexure-7.2. During this period, lowest

voltages recorded at 400 kV Gwalior, Jetpur and Indore substations ranged between

347-352 kV, 364-371 kV and 378 kV respectively. The highest voltages recorded at

Bina, Dhule, Karad and Itarsi 400 kV substations ranged between 439-440 kV, 438-

440 kV, 430-438 kV and 432-435 kV respectively.

Following actions have been initiated for controlling the abnormal voltages in the

grid:


• During the 379th OCCM MSETCL had indicated that Shunt Controllable

reactor at 400 kV Padghe s/s is likely to be commissioned by March 2008.

• The installation of 63 MVAr reactor at 400 kV Damoh sub-station by PGCIL is

targeted for March 2008. For installation of 125 MVAr bus reactors each at

400 kV Khandwa and Dehgam sub-stations by PGCIL, the investment

approval is awaited.

• The installation of 125 MVAr bus reactor each at Dhule, Indore, Kasor sub-

stations by MSETCL, MPPTCL and GETCO and 80 MVAr bus reactor each at

Karad and Nardipur substations by MSETCL and GETCO was agreed by WR

constituents as noted in the 4th WRPC meeting.

MSETCL, MPPTCL and GETCO may indicate target date for the same, as

an early commissioning of these reactors would greatly help in smoothening

of high voltage profile in Western regional grid.

• The SSP machines at RBPH are able to operate in synchronous mode as and

when needed upon real-time advise by WRLDC.

Members may kindly discuss.

ITEM No.8: TELEMETRY OF DATA FROM INDIRA SAGAR AND SARDAR

SAROVAR HYDRO ELECTRIC PROJECTS WRLDC has proposed the following items on Telemetery from Indira Sagar HPP&

Sardar Sarovar HEP.

8.1. TELEMETRY FROM INDIRA SAGAR HPP:

Indira Sagar HPP (8x125 MW) has since been commissioned and

injecting power into Western Regional Grid for quite sometime now.

However, the real time telemetry from generating station and from the

emanating transmission lines is not available till now. Non-availability

of telemetry at load dispatch centers of MP and WRLDC has been

causing severe constrains in grid monitoring. It has been given to

understand that the proposal for procurement of RTU from HAIL on

single tender basis has been under consideration by NHDC. The real


time telemetry needs to be established at the earliest and present

status of the same is to be reviewed.

MPPTCL may kindly intimate the present status.

8.2. TELEMETRY FROM SARDAR SAROVAR HEP Sardar Sarovar Hydro Electric Project has since been commissioned

and injecting power into Western Regional Grid. The real time

telemetry is not available to load dispatch centers of Gujarat and

WRLDC. In the recent past, there have been several tripping of lines

emanating from SSP. The constraints in grid monitoring in the

absence of real time telemetry need not be overemphasized. It has

been given to understand that action plan for upgradation/replacement

of RTU and SCADA of SSP complex is under formulation in

consultation with CEA, GETCO, SSNL. The telemetry needs to be

established at the earliest.

NCA may kindly intimate the present status.

ITEM No.9: ANTICIPATED POWER SUPPLY POSITION FOR THE PERIOD OCTOBER 2007 TO DECEMBER 2007

The anticipated power supply position in the region for the period from October 2007

to December 2007 is furnished at Annexure- for information of the members. With

the onset of rabi season, the regional demand is likely to rise by around 5600 MW

during the period October-December 2007. The peak demand deficit is likely to be of

the order of 6100-6850 MW, whereas energy deficit is likely to be of the order of 41-

93 MUs per day. The anticipated regional peak demand is in the range of 36000-

37000 MW. The anticipated demand shortages for Gujarat, Chhattisgarh,

Maharashtra, Goa, DD & DNH would be in the range of 1500-3550 MW, 300-350

MW, 4000-5000 MW, 170-180 MW, 45-60 MW respectively during the above period.

In view of the above, the regional grid would face high shortfall during the above

period. Therefore, ensuring the system frequency, voltage profile and transmission

system loading within the limits stipulated as per the IEGC by all the regional power

utilities needs no emphasis. The constituents are, therefore, requested to plan


necessary Load balancing measures accordingly and ensure that the overdrawls at

low frequency are fully curtailed. The annual planned outages of all generating units

should be completed before the start of October 2007. To meet any contingent

conditions, it shall however have to be ensured that the existing UFR and df/dt relays

under the AUFLS scheme are operative at the recommended settings and the

desired load relief is obtainable. The overdrawing utilities may ensure that entire

generating capacity is fully utilized and no capacity is left unrequisitioned from the

regional ISGS stations, else WRLDC may unilaterally allocate unrequisitioned ISGS

power to such intra-regional utilities. Due to high reactive agricultural load during the

above period, voltages profile may tend to drop below lower permissible-levels.

WRLDC vide their letter No. 1603 dated 20.9.2007 have expected that low voltage

may prevail at Indore, Bina, Bhopal and Gwalior 400 kV sub-stations. This needs to

be avoided and ensured that all HT capacitor banks at EHV sub-stations are in

service. Further SSP may follow real-time operational instructions by SLDCs/RLDC

by operating RBPH machine(s) in synchronous mode for providing adequate reactive

power support during such instances. In addition, all thermal generating units in the

vicinity of lower voltage profile shall require to maximize generation of reactive power

within their capability limits so as to help in controlling low voltage in the grid.

Members may like to discuss.

ITEMS FOR INFORMATION ITEM No.10: COMMISSIONING OF TRANSMISSION ELEMENTS/GENERATING

UNIT Since last WRPC meeting following transmission lines and generating units have

been commissioned / declared on commercial operation as detailed below:

10.1: TRANSMISSION ELEMENTS Sl.No. Element Date of commercial operation

1 400 kV Satna-Bina - Ckt.-IV 01.06.2007 2 400 kV Satna-Bina - Ckt.-III 01.09.2007


10.2: GENERATING UNITS Sl.No

Station / Unit Capacity (MW)

Date of commissioning

1 Vindhyachal St.III Unit 2 (Unit 10)- NTPC 500 15.07.2007 (DOCO)

2 Omkareshwar Sagar Project Unit 1 (NHDC) 65 21.07.2007 3 Omkareshwar Sagar Project Unit 2 (NHDC) 65 09.08.2007 4 Omkareshwar Sagar Project Unit 3 (NHDC) 65 29.08.2007 5 Madikheda Hydro Generating Unit 3 (MPPGCL) 20 18.08.2007

Member may kindly note.

ITEM No.11: ONGOING TRANSMISSION SCHEMES IN WESTERN REGION

Transmission schemes being executed in WR by PGCIL as well as under state

sector are given in Annexure-11. The lines, which are expected to be commissioned

during the current year, are as below:

765 kV lines Transmission link No. of Ckt. Likely DOC 1 Sipat -Seoni Line –1 S/C Oct. 2007 2 Sipat -Seoni Line –2 S/C Sept. 2007 3 Seoni-Wardha Line-1 S/C Jun. 2008

400 kV lines 1 Seoni- Khandwa (Quad) D/C Oct. 2007 2 Nagda-Dehgam D/C Oct. 2007 3 LILO of S/C Bhilai-Satpura at Seoni D/C Completed

Sept. 07 4 LILO of both ckt. of SSP-Nagda at

Rajgarh D/C Dec. 2007

5 Khandwa-Rajgarh D/C Dec. 2007 6 LILO of Korba-Raipur, S/C at Bhatapara D/C Sept. 2007 7 Bina-Nagda D/C Oct. 2007 8 Vindhyachal-Korba S/C Completed. 9 Satna-Bina D/C Completed 10 LILO of Rourkela- Raipur at Raigarh D/C Sept. 2007 11 Sipat-Raipur D/C Nov. 2007 12 Wardha-Akola D/C Jun. 2008 13 Akola-Aurangabad D/C Jun. 2008

220 kV lines 1 Vapi (PG)- Kharadpada (DNH) D/C Oct. 2007 2 Vapi (PG)- Magarwada (DD) & 7 Km Multi

ckt. Portion D/C Oct. 2007

3 220 kV Bhilad- Vapi (PG) D/C Sept. 2007 4 220 kV Boisar-Nalasopara S/C Dec. 2007

Present status of the above lines may please be intimated.


ITEM No. 12: ONGOING GENERATION SCHEMES IN WESTERN REGION The details of on going and proposed generation schemes in WR both under State

as well as Central sector are given in Annexure- 12.

Generating units expected to be commissioned during the current year are as under:

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

Schedule Date of Commissioning

GUJARAT (i) Dhuvaran CCGT St.II Stage-II 112.45 2007-08 (ii) Kutch Lignite TPS 4 75 Sept.2007 (iii) Sugen CCPP- Torrent Power Block -1 110 Jul. 2007 Block-2 110 Oct. 2007 Block-3 110 Jan. 2008 MADHYA PRADESH (i) Birsinghpur TPP Extn. 1 500 Comm. in June 07 (ii) Amarkantak TPS 5 210 Sept.2007

(iii) Omkareshwar HEP- NHDC 1 & 2 2 x 65 U#1 comm. July

07 3 & 4 2 x 65 Aug. 2007 5 & 6 2 x 65 Sept.2007 CHHATTISGARH (i) Korba TPS (E) Extn. Stage-V 2 250 Jul. 2007 (ii) Raigarh TPP Ph-I &II – Jindal (Pvt) 1 250 Jul. 2007 2 250 Oct. 2007 3 250 Dec. 2007 4 250 Mar. 2008 MAHARASHTRA (i) Ghatghar HPS (Hydro) 1 125 2007-08 2 125 2007-08 CENTRAL SECTOR – NTPC (i) Sipat-II TPP 5 500 Sept. 2007 (ii) Sipat-I TPP 1 600 Mar. 2008 2 600 Sept. 2008 (iii) Bhilai TPP (Joint venture with SAIL) 1 250 Feb. 2008 2 250 Aug. 2008 (iv) Ratnagiri PGCL CCPP Joint venture

GTs+STsBlock-III

740

Members may like to note.


ITEM No 13.: INTER-REGIONAL TRANSMISSION SYSTEM FOR EXPORT OF POWER FROM NER TO NR/WR AND POWER EVACUATION SYSTEM IN NER FOR SUBANSIRI LOWER HEP (2000 MW) AND KAMENG HEP (600 MW)

The Inter Regional Transmission System for export of power from NER to WR / NR

and power evacuation system in NER for Subansiri lower HEP (2000 MW ) and

Kameng HEP (600 MW) was finalized in the 26th meeting of Standing Committee on

power system planning in Western Region and put up to WRPC in its 4th meeting

held on 29th June,2007 for its concurrence. The scheme comprises of three parts as

under:-

Part–A: North-East – Northern / Western inter connector-1.

Part–B: Transmission system for evacuation of power from Kameng HEP.

Part–C: Transmission system for evacuation from lower Subansiri HEP upto

Biswanath Cahriyali Polling station.

The Transmission charges for Part-B & Part-C were to be shared by WR and NR in

proportion to their allocation from Kameng HEP and lower Subansiri HEP

respectively. The charges for Part-A were proposed to be shared by WR and NR in

50:50 ratio. In the 4th meeting of WRPC, it was observed that, sharing of charges by

WR and NR for transmission system under Part-A in the ratio of 50:50 was based on

the proposal of CEA to allot 70% of power from these projects to the states in NR

and WR on 50:50 basis, but the final allocation may not be in 50:50 ratio. It was,

therefore, suggested that sharing of transmission charges should be in proportion to

allocation to NR and WR. It was decided that this might be referred to Standing

Committee for necessary amendment/clarification.

This issue was taken up in the 27th meeting of Standing Committee on power system

planning in Western Region held on 30th July, 2007 wherein it was clarified that in

case final allocation was different, then the sharing of transmission charges would be

the ratio of shares of NR and WR in allocation of NER Hydro power from Kameng,

Subansiri and other future projects.

Member may please note.


ITEM No.14: TRNAMSISION SYSTEM FOR EVACUATION OF POWER FROM SASAN (5x800 MW) AND MUNDRA (5x800 MW) ULTRA MEGA POWER PROJECTS.

The transmission system for evacuation of power from Sasan (5X800 MW) and

Mundra (5X800 MW) UMPP was finalized in the 25th meeting of the Standing

Committee on power system planning in WR and concurred by WRPC in its

2nd meeting held on 12th October, 2006.

Subsequently, during the 26th meeting of Standing Committee, certain modifications

in the Transmission system for Sasan and Mundra UMPPs were agreed to. The

modified transmission system was put up in the 4th meeting of WRPC for its

concurrence.

The transmission system associated with Sasan UMPP, inter-alia, included " LILO of

both circuits of Indore-Nagda 400 KV D/c line at Indore (PG)". In the 4th WRPC

meeting, CMD, MPPTCL said that this is not feasible as there exists only one 400

KV DCSS line between Indore and Nagda and the other 400 KV DCSS line is

between ISP and Nagda. As such, it was decided to refer this link back to the

Standing Committee. The issue regarding connectivity of the proposed 765 / 400 KV

sub-station of PGCIL at Indore with MPPTCL's 400 KV Indore Sub-statio, was

discussed in the 27th meeting of the Standing Committee. It was decided to connect

the two sub-stations through 400 KV quad d/c line instead of LILO arrangement. As

such, the proposal of "LILO of Indore-Nagda 400 KV D/C line at Indore (PG)" has

been replaced by "Indore (PG) – Indore (MPPTCL) 400 KV quad D/c line".

Regarding transmission scheme associated with Mundra UMPP, MD, GETCO had in

the 4th WRPC meeting stated that in the 26th Standing Committee, they had

proposed establishment of 400 KV sub-station at Shivlakha through LILO of 400 KV

Mundra-Ranchhodpura D/C line. As this proposal required further study, it was

decided to refer it to the Standing Committee. The proposal was taken up in the

27th meeting of the Standing Committee, wherein it was indicated that LILO of

Mundra-Ranchhodpura 400 KV D/C line at Shivlakha will result in reduction of 25

MW in transmission loss in Gujarat network and reduction of 68 MW in loss in WR

regional grid. As such, GETCO's proposal was agreed to. In the same meeting,

GETCO intimated that they have identified a location for this sub-station at Bhachau


instead of Shivlakha. Accordingly, the proposal of "Mundra -Ranchhodpura 400 KV

triple conductor D/c line" in Mundra evacuation scheme has been replaced by

"Mundra-Bhachau-Ranchhodpura 400 KV triple conductor D/c line” and “Bhachau

400 KV sub-station with 2X315 MVA 400/220 KV transformers".

Further, in the 27th Standing Committee meeting, it was intimated that earlier all the

evacuation lines emanating from Mundra were agreed to be with triple Moose

conductors. However, PGCIL had communicated that the standard/tested line

designs are available for triple snowbird conductors but not for triple Moose

conductors. As the testing of new line designs with triple Moose conductors will add

to the line cost and as the thermal capacity of both the conductors was almost same,

it was agreed to change the conductor from "Triple Moose" to "Triple Snowbird".

With the above modifications, the revised ATS for Mundra and Sasan UMPPs, as

agreed to in the 27th meeting of Standing Committee, are as under: -

Mundra Transmission In WR

(i) Mundra-Limbdi 400 KV D/C (Triple Snowbird)

(ii) Mundra-Bhachau-Ranchhodpura 400 kV D/C (Triple Snowbird).

(iii) Mundra-Jetpur 400 kV D/C (Tripple Snowbird).

(iv) Bhachau 400/220 kV 2x315 MVA S/S.

(v) Gandhar-Navsari 400 kV D/C.

(vi) Navsari 400/220 kV 2x315 MVA S/S.

(vii) LILO of both ckts of Kawas-Navsari 220 kV D/C line at Navsari 400 kV

S/S.

(viii) Navsari-Mumbai New Location (PG) 400 kV D/C and connecting to HVDC

side of MSEB at this new S/S.

(ix) Wardha 765kV S/S with 3x1500 MVA , 765 /400 kV.

(x) 765 kV operation of Seoni-Wardha 2xS/C lines.

(xi) Wardha-Aurangabad 400 kV D/C quad with 40% Fixed Series Capacitor.

In NR

(i) Agra-Sikar 400 KV D/C quad.

(ii) New 400/200 kV 2x315 MVA S/S at Sikar.


(iii) Sikar-Jaipur PG 400 kV D/C.

(iv) Sikar-Ratangarh 400 kV D/C.

(v) LILO of both circuits of Nathpajahkri-Abdullapur 400 kV D/C at Panchkula

with 2x315 MVA 400/220 kV S/S at Panchkula.

Sasan Transmission In WR

(i) Sasan-Satna 765 kV 2xS/C.

(ii) Satna 765/400 kV, 2x1000 MVA S/S.

(iii) Satna-Bina (PG) 765 kV 2xS/C.

(iv) Bina(PG)-Bina(MP)400 kV D/C (2nd line).

(v) LILO of both circuits of one of the Vindhyachal-Satna 400 kV D/C line at

Sasan 400 kV 2xD/C.

(vi) Fixed SeriesComp 30% on 400 kV Sasan-Satna D/C.

(vii) Fixed Series Comp 30% on both of Satna-Bina 2xD/C.

(viii) Bina (PG)-Indore 765 kV S/C.

(ix) New 765 kV substation at Indore, 2x1500 MVA 765/400 kV.

(x) Indore(PG)-Indore (MPPTCL) 400 kV quad D/C.

(xi) 765 kV operation of Agra-Gwalior-Bina-Seoni 765 kV lines and upgrading

Bina and Gwalior s/s to 765 kV: 2x1000 MVA 765/400 kV at Bina and

2x1500 MVA 765/400 kV at Gwalior.

In NR

(i) Sasaram-Fathepur 765 kV S/C (2nd line).

(ii) Fathepur-Agra 765 kV S/C (2nd line).

Member may kindly note.

ITEM No. 15: PAYMENTS OF UI AND REACTIVE ENERGY CHARGES

As per the information received from WRLDC, the status of payment to UI pool

account and Reactive Energy Pool account as on 20.09.2007 of the current financial

year is given below: -


(All figures in Rupees)

UI Pool Account Reactive Energy Pool Account

Constituents Dues Constituents Dues GUJARAT (214,673,636) GUJARAT 3,934,606 MADHYA PRADESH

27,666,072 MADHYA PRADESH

3,883,459

CHHATTISGARH 104,067,566 CHHATTISGARH (3,100,332) MAHARASHTRA 43,600,985 MAHARASHTRA (1,883,710) GOA 2,513,684 GOA (1,908,066) DD 63,854,350 DNH 49,858,487 NTPC (30,421,313) NR Exchange 246,122,306 SR Exchange (395,879,385) ER Exchange (81,774,461) HVDC Vindhyachal (135,579) HVDC Bhadravati (832,513) Total* (186,033,437) 925,957

*To be disbursed by WRLDC Figures in bracket ( ) are receivables from pool

WRP Committee may like to note the above status. ITEM No.16: ANY OTHER ITEM WITH PERMISSION OF CHAIR ITEM No.17: DATE AND VENUE OF NEXT WRPC MEETING

* * * * *

ANNEXURE –4.1

EXTRACTS FROM THE MINUTES OF 27TH MEETING OF STANDING COMMITTEE ON POWER SYSTEM PLANNING IN WESTERN REGION HELD

AT INDORE ON 30TH JULY 2007 3. Transmission System for evacuation of power from Krishnapattnam

UMPP (4000 MW) and requirements for additional transmission capacity between SR-WR

3.1 Chief Engineer (SP&PA) stated that transmission system for evacuation of

power from Krishnapattnam UMPP (4000 MW) was discussed in the last

meeting of the Standing Committee on Power System Planning of WR and

agreed. Subsequently based on feedback and considering that the time

frame of Tamil Nadu UMPP had slipped with respect to Krishnapattnam

UMPP and also considering that additional generation was being taken-up at

Bhopalpalli (500MW), Mettur(500 MW), Tuticorin Stage-IV (1000 MW), North

Chennai TNEB (500 MW), Ennore TPS (500 MW) and Nagarjuna TPS (1015 MW)

etc and estimated exportable surplus of 6700 MW (peak) and 12000 MW (off-peak)

corresponding to 2014-15 conditions based on National Electricity Plan-

Transmission, the total scheme was reviewed and discussed in the Standing

Committee of SR on 18th June (24th meeting of SCM of SR) and the revised

proposal had emerged and was agreed in SR. Thereafter he detailed the proposal

and the studies as circulated in the Agenda note.

3.2 Chief Engineer, MPPTCL stated that detailed techno-economic justification for

1000 MW HVDC back-to-back at Narendra/Kolhapur along with cost benefit

analysis and the justification for Pune (WR) – Navi Mumbai (WR) 400 kV D/C line

under system strengthening work of Western Region showing the power flow under

various conditions should be given.

3.3 CE, SP&PA, CEA stated that as brought out in the Agenda note for the meeting,

the total requirement of inter-regional links between SR and WR was based on

projections for 2013-14 wherein exportable surplus of SR was estimated to be of

the order of 6700 MW during peak hours and 12000 MW during off peak hours of

winter month. The projections as brought out in the ‘ National Electricity Plan ‘

Volume-II – Transmission – Page 5.4 (copy enclosed) had shown that Northern

Region would be needing to import most of the power and as such, the power

received by WR on the SR-WR links would be partly utilized in the WR and mostly

wheeled to NR through displacement. The load flow studies and analysis

circulated with the agenda note for the 26th meeting had clearly shown the need of

providing additional SR-WR transmission capacity through 2x765 kV S/C lines

between Raichur (SR) and Sholapur (WR) and addition 1000 MW link between

Narendra (SR) and Kolhapur (WR).

3.4 Advisor, CSEB, stated that Pune-Navi Mumbai 400 kV D/C line was primarily for

the benefit of the Maharashtra alone and therefore, the reason for treating it as a

regional system strengthening work was required to be elaborated.

3.5 Member (PS), CEA stated that Pune-Navi Mumbai 400 kV D/C line was identified

as a part of total scheme and was proposed as a regional system strengthening

scheme considering that the line would be required in the system irrespective of

which generation project feeds the power in to the system. As the requirement of

this line was a system requirement for catering to increasing load demand in the

grid and not very specific to a particular generation projects, as was the practice,

this was proposed as a regional system strengthening scheme. Such proposals

had earlier been considered and agreed in other states also.

3.6 After further detailed discussion, the members concurred to the following schemes.

It was also decided that a para giving details of cost economics would be included

in the minutes.

3.6.1 Scheme –A : Increasing SR-WR Inter-Regional Transmission Capacity through

HVDC back-to-back

Transmission System: 1) Narendra – Kohlapur 400kV D/C line

2) 1000 MW HVDC back-to-back at Narendra (or at Kolhapur, to be decided

based on land availability) of which 500 MW through shifting of equipment

from Sasaram.

As, transfer of equipment from Sasaram would involve commercial and assets

related issues. Transmission charges of the existing scheme at Sasaram for

equipment to be shifted as well as unusable and leftover assets, from the date of

decommissioning, would be required to be transferred to new scheme and would

become payable by SR/WR constituents. The usable left over assets of land and

building at Sasaram, would be credited when utilized in some future scheme.

Transmission Charges: Transmission charges for this scheme would be shared by SR and WR

constituents on 50:50 basis. Transmission scheme would be regional pool

scheme of SR and WR.

Target Date: Target would be to complete the transmission line and shifting HVDC back-to-

back module by June 2010 and establish second HVDC back-to-back module by

December 2010.

3.6.2 Scheme –B : Synchronous Inter-connection of SR and WR

Transmission System: 1) Raichur - Sholapur 765kV S/C line-1

Transmission Charges: Transmission charges for this scheme would be shared by SR and WR

constituents on 50:50 basis. Transmission scheme would be regional pool

scheme of SR and WR

Target Date: Target would be to match with the Krishnapatnam UMPP generation project.

3.6.3 Scheme –C : Evacuation System for Krishnapatnam UMPP

Transmission System: 1) Krishnapatnam UMPP – Nellore 400 kV, Quad D/C line

2) Krishnapatnam UMPP – Kurnool 400kV, Quad D/C line

3) Krishnapatnam UMPP –Gooty, 400 kV, Quad D/C line

4) Raichur - Sholapur 765kV S/C line-2

5) Sholapur – Pune 765kV S/C line

6) Kurnool – Raichur 765kV S/C line

7) 765kV substations at Kurnool, Raichur, Sholapur and Pune, with 765/400kV

3000 MVA transformers at each of the substations.

8) Inter-linking of Raichur 765kV (PG) S/S with Raichur(KPTCL) 400kV S/S

Transmission Charges: Transmission charges for this scheme would be shared by all the beneficiaries of

Krishnapatnam UMPP in ratio of their shares in Krishnapatnam UMPP.


3.6.4 Scheme –D : System strengthening in Western Region corresponding to power

from Krishnapatnam UMPP

Transmission System: 1) Pune (WR) – Navi Mumbai (WR) 400kV D/C line

Transmission Charges: Transmission charges for this scheme to be shared by WR constituents as

regional pooled transmission charges together with WR share from

Krishnapatnam UMPP considered for revised ratios for sharing of WR pooled

transmission charges


Revised ratio for sharing of WR pooled transmission charges. Corresponding to share of WR in Krishnapatnam UMPP, 800 MW to be added in

denominator for all constituents and in numerator of Maharashtra.

3.7 Para on Cost Economics :

The estimated costs of schemes A, B, C & D are tentatively estimated to

be about Rs 300 crore, Rs 400 crore, Rs 3000 crore and Rs 300 crore

respectively. The total of the four schemes works out to be of the order of

Rs 4500 crore. For facilitating evacuation of 4000 MW of power from

Krishnapatnam UMPP plus additional exchanges between SR-WR or SR-

NR via WR, this would be a cost effective solution. The increased

transmission cost of WR regional charges would be 50% of scheme A +

50% of Scheme B + NIL out of Scheme C +100% of Scheme D totaling to

about Rs 900 crore. Transmission charges for this cost would be of the

order of Rs.10 crores per month. Taking share of WR in Krishnapatnam

UMPP which was 800MW share of Maharashtra, with PLF of 80%, this

would give rise to additional energy of about 460 MU per month plus

additional 140 MU towards operational exchanges (say 2000 MW at 10%

load factor) the unit cost of transmission charges for this system would

work out to be of the order of 17 p/kwh.

LOCATION and REQUIREMENT OF SPECIAL ENERGY METERS Western Region

Sl.No. S/Station Feeders/ICTs MainChk/Standby

Meters Total

(As on 01.09.2007)1 Bina 765kV (PG)

Gwalior 2nd S/C 0 1 1Total : 0 1 1

2 Gwalior 765kV(PG)Bina 2nd S/C 0 1 1Total : 0 1 1

3 Rajgarh 400kV(PG)Karamsad D/C 2 0 2Total : 2 0 2

4 Karamsad 400kV(GETCO)Rajgarh D/C 2 0 2Total : 2 0 2

5 Raipur 400kV (PG)Sipat D/C 0 2 2Wardha D/C 0 2 2NSPCL 2 0 2Raigarh 3&4 0 2 2Total : 0 2 8

6 Sipat stg-I& II (NTPC) (765kV)GT-5* 5 5ST-4* 0 0ICT-2* 2 2 4Seoni D/C* 2 2 4Total : 4 9 13

7 Sipat stg-I& II (NTPC) (400kV)Ranchi D/C* 2 0 2KSTPS S/C* 1 0 1Raipur T/C* 3 0 3400/132kV ICT-1,2&3* 3 3 6Total : 9 3 12

8 Seoni 765kV(PG)ICT-2* 0 2 2Wardha D/C* 0 2 2Bina 2nd S/C 0 1 1Total : 0 5 5

9 Seoni 400kV(PG)ICT-2* 2 2 4Khandwa D/C* 0 2 2Bhilai S/C* 1 0 1Satpura* 1 0 1Total : 4 4 8

10 Wardha 765kV(PG)765kV/400kV ICT1 1 0 1Seoni D/C 2 0 2Total : 1 0 3

11 Wardha 400kV(PG)ICT-2* 2 2 4Akola D/C 0 2 2

SEM Future Requirement in 2009 & 2010in WR

9/12/2007 OS/WRLDC/MUMBAI 1 / 3



Meters TotalRaipur D/C 0 2 2Parli D/C 0 2 2Total : 2 8 10

12 Parli 400kV(PG)Wardha D/C 2 0 2Bhadravathi D/C 2 0 2Parli(MSEB)D/C 0 2 2Pune D/C 2 0 2Pandharpur/Sholapur D/C 2 0 2Total : 8 2 10

13 Akola 400kV MSETCLWardha D/C 2 0 2Aurangabad 2 0 2Total : 4 0 4

14 Aurangabad 400kV MSETCLAkola D/C(MSETCL) 2 0 2Pune D/C(PG) 2 0 2Total : 4 0 4

15 Pune 400kV (PG)Parli(PG) D/C 2 0 2Lonikhand 0 1 1Kalwa 0 1 1Aurangabad D/C(MSETCL) 2 0 2Total : 4 2 6

16 Pandharpur/Sholapur 400kV (PG)Parli D/C 2 0 2Kolhapur(MSEB) D/C 2 0 2Karad(MSEB) 0 1 1Sholapur(MSEB) 0 1 1Total : 4 2 6

17 Kolhapur 400kV (MSETCL)Pandharpur D/C 2 2Total : 6 3 2

18 KSTPS(NTPC) 400kVBirsingpur D/C 2 2 4Total : 2 2 4

19 Shujalpur 400kV (PG)ICT-1&2 2 2 4Bina D/C 0 0 0Nagda D/C 0 2 2Total : 2 4 6

20 NSPCL (400kV)Raipur D/C 0 0 0Total : 0 0 0

21 NSPCL(220kV)Bhilai-3-Gurur 1 0 1Total : 1 0 1

22 BSP(220kV) NSPCLKhedamara D/C 2 0 2Total : 2 0 2

23 BSP(132kV) NSPCL




Meters TotalBhilai-3 2 0 2Total : 2 0 2

24 Khedamara 220kV(CSEB)BSP D/C 2 0 2Total : 2 0 2

25 Bhilai-3(220kV)-CSEBNSPCL 1 0 1Total : 1 0 1

26 Gurur 220kV(CSEB)NSPCL 1 0 1Total : 1 0 1

27 Bhilai 132kV(CSEB)BSP D/C 2 0 2Total : 2 0 2

28 DAMOH 400kV(PG)ICT-1&2 2 2 4Birsingpur D/C 0 2 2Bhopla D/C 0 2 2Total : 2 2 8

29 Birsingpur 400kV (MPGenco)Damoh D/C 2 0 2KSTPS D/C 2 0 2Total : 2 2 4

30 Bhopal 400kV(MPPTCL)Damoh D/C 2 0 2Itarsi* 2 0 2Total : 2 2 4

31 Bhadravathi 400kV(PG)Parli D/C 2 0 2Total 2 0 2

32 Itarsi 400kV(PG)ICT-1 1 1 2Total 1 1 2

32 Raigarh 400kV(PG)Rourkela 3&4 0 2 2Total 0 2 2

Note: "*" SEMs already approved /existing

Total No. of SEMs required 97Spares @20% 19Net Total 116Total No. of DCDs required 27Spares @20% 5Net Total 32TYPE OF METER

Model-A


Agenda Notes for 5th WRPC meeting to be held on 6thOctober2007

Annexure-7.1(a)

FREQUENCY PARTICULARS OF WESTERN REGION FOR THE PERIOD JUNE 2007 TO SEPTEMBER 2007*

Sl.No. PARTICULARS Jun-07 Jul-07 Aug-07 Sep-07

1 MAXIMUM FREQUENCY(Hz) 1.1 Integrated over an hour 50.44 50.33 50.32 50.621.2 Instantaneous 50.69 50.68 50.91 -

2 MINIMUM FREQUENCY(Hz)

2.1 Integrated over an hour 49.00 49.00 48.93 48.722.2 Instantaneous 48.68 48.71 48.69 -

3 AVERAGE FREQUENCY(Hz) 49.66 49.69 49.61 49.62

4 NUMBER OF TIMES FREQUENCY TOUCHED

4.1 48.6 Hz 0 0 0 - 4.2 48.8 Hz 128 61 130 - 4.3 51.0 Hz 0 0 0 -

5 PERCENTAGE TIME WHEN FREQUENCY WAS

5.1 Above 50.2 Hz 6.48 4.54 3.72 - 5.2 Above 50.5 Hz 0.18 0.04 0.07 0.075.3 Between 50.2 Hz & 49.5 Hz 56.29 65.07 55.60 - 5.4 Between 50.2 Hz & 49.0 Hz 89.93 94.05 93.04 -5.5 Below 49.0 Hz 3.59 1.41 3.24 1.685.6 Below 49.8 Hz 62.01 62.42 70.57 - 5.7 Between 49.0 Hz & 50.5 Hz 96.23 98.55 96.69 98.245.8 Between 50.5 Hz & 48.5 Hz 99.82 99.96 99.93 -

* Position for September 2007 is upto 20.09.2007


Annexure-7.1(b) (1/2)

POWER SUPPLY POSITION IN WR FOR PERIOD FROM JUNE 2007 TO SEPTEMBER 2007* (IN MW)

Details Chhatisgarh Gujarat Madhya Pradesh Maharashtra

June July Aug Sept June July Aug Sept June July Aug Sept June July Aug Sept

Availability (MW) 1715 1908 1999 1785 7849 7837 7557 7267 4534 4326 4276 4698 12231 11892 12069 12764

Unrestricted demand (MW) 2096 2149 2298 2033 9861 9443 8352 10098 5008 4347 4518 4962 15795 15778 16169 14729

Deficit(-)/Surplus(+) (i) MW -381 -241 -299 -248 -2012 -1606 -795 -2831 -474 -21 -242 -264 -3464 -3886 -4100 -1965

(ii) % -18.18 -11.21 -13.01 -12.20 -20.40 -17.01 -9.52 -28.04 -9.46 -0.48 -5.36 -5.32 -21.93 -24.63 -25.36 -13.34

Details Goa Daman & Diu Dadra & Nagar Haveli Western Region


Availability (MW) 408 376 400 380 191 199 205 190 395 398 407 384 25841 25689 24989 27535 Unrestricted demand (MW) 457 404 452 437 209 218 225 190 432 433 442 384 32979 31819 31036 31543

Deficit(-)/Surplus(+) (i) MW -49 -28 -52 -57 -18 -19 -20 - -37 -35 -35 0 -7138 -6130 -6047 -4008

(ii) % -10.72 -6.93 -11.50 -13.04 -8.61 -8.72 -8.89 - -8.56 -8.08 -7.92 0 -21.64 -19.27 -19.48 -12.71 * Position for September 2007 is upto 20.9.2007


Annexure-7.1(b) (2/2)

ENERGY POSITION IN WR FOR PERIOD FROM JUNE 2007 TO SEPTEMBER 2007 * (IN MUs)

Details Chhatisgarh Gujarat Madhya Pradesh Maharashtra


Availability (MUs) 1074 1160 1261 1120 4833 4345 4187 4683 2550 2385 2528 2559 7515 7682 7968 7553

Unrestricted requirement (MUs) 1116 1207 1310 1142 5536 4723 4499 5157 2767 2455 2583 2604 8411 8568 8795 7736

Deficit(-)/Surplus(+) (i) MUs -42 -48 -49 -22 -703 -379 -312 -474 -217 -70 -56 -45 -896 -886 -827 -183

(ii) % -3.76 -3.94 -3.73 -1.93 -12.71 -8.02 -6.94 -9.19 -7.85 -2.85 -2.21 -1.73 -10.65 -10.34 -9.40 -2.36

Details Goa Daman & Diu Dadra & Nagar Haveli Western Region


Availability (MUs) 216 216 219 211 125 131 135 130 271 285 282 257 16584 16203 16579 16459 Unrestricted requirement (MUs) 219 218 222 213 138 146 150 130 271 285 282 257 18459 17602 17840 17186

Deficit(-)/Surplus(+) (i) MUs -3 -2 -3 -2 -12.96 -14.13 -15 0 -0.24 -0.40 -0.14 0.0 -1874 -1398 -1261 -727

(ii) % -1.28 -0.82 -1.18 -0.94 -9.39 -9.71 -9.96 0.0 -0.09 -0.04 -0.05 0.0 -10.15 -7.94 -7.09 -4.23 * Position for September 2007 is upto 20.9.2007


Annexure - 7.1(c)

Recommendations of the Inquiry Committee headed by Shri Santosh Kumar, Member (GO & D), CEA, New Delhi on the Partial Grid Disturbances of

25.02.2007 & 28.02.2007 in WR Grid

The Committee makes the following recommendations to be implemented at the earliest by all the concerned agencies: 9.1 Recommendations pertaining to data required for analysis:

(i) Inadequate data: All earlier inquiry committees constituted to investigate the causes of grid disturbances have expressed concern about full data including some of the data crucial for analyzing the causes of disturbance not being available. In the absence of complete data considerable time is spent in establishing the cause and sequence of events. In the present case also, some of the crucial data was not available particularly the data from sequence event loggers and disturbance recorders at Padghe s/s. As a result the analysis of the incidence took considerable time. The Committee recommends that the monthly status on the healthiness of DRs (with time stamping status) and the sequential event logging devices at each of the sub-stations/generating station is checked and certified by the concerned substation/generating stations in-charge, and confirmed to RPC secretariat. In case of non-availability of data from any of the important sites, following a disturbance, specific responsibilities may be fixed on the concerned personnel.

(ii) Committee expresses its concern on deletion of some of the data available on REL 521 relays installed on Padghe-Nagothane lines at 400 kV Padghe sub-station.Committee recommends that following any grid disturbance, all data should be frozen, downloaded and dispatched to RPC and RLDC within 24 hours for further analysis at RPC level.

(iii) SCADA data pertaining to the time of tripping of lines and generating units received from the various RTU’s must be time stamped at the RTU itself.

(iv) The sequence of events (SOE) data is generated from the trip relays activating the circuit breakers and is time stamped at RTU level and also time synchronised with GPS. Presently, the SOE data is not available from many RTUs or the required process connections are not made at the sites. Considering importance of the SOE data, all


the state and central sector utilities should complete the process connections to RTU, within a period of six months.

9.2 Recommendations pertaining to Protection:

(v) Both Main- I and Main –II protection on 400 kV Padghe- Nagothane Ckt-I is provided by ABB make REL 521 relays with same characteristic and settings thereby defeating the purpose of providing selectivity and discrimination of the fault. In line with Section 2 of CBIP Publication 274 of November 1999, Main-I and Main-II protection should be of different types and not necessarily of different make.

(vi) The Committee observed that distance relay REL 521 does not have the feature of recording switching off of auxiliary DC supply to the relay as an internal event among recording of other related relay supervision parameters. For the grid disturbance of 25.2.2007, the time of switching off of DC auxiliary supply was very crucial information, which was not available. The possibility of incorporating the time of switching off of DC auxiliary supply as an internal event recording, may be taken up with the manufacturer.

(vii) The triggering of disturbance recorders at Padghe substation gets initiated only with the relay operation. Therefore, disturbance recording would not take place if the relay has not operated. The Committee recommends that the DRs should also have analog triggering signal from voltage/current/frequency threshold to ensure generation of DR data.

(viii) The Committee expresses its concern that 400kV Padghe substation does not have compatible device to download the disturbance data recorded from the memory of the numerical distance relays installed on 400kV lines. The Committee recommends that every sub-station having numerical relays be provided with compatible data downloading device to facilitate analysis of the vital information.

(ix) The simulation studies indicate that the distance protection scheme provided on some lines are under-reaching due to in-feed effect. Protection Committee of WRPC may look into this aspect and review the settings of 400 kV lines considering in-feed.

(x) Since the 400 kV Chandrapur-Parli T/c is a very important corridor for power flow, the relays on this line should be replaced at the earliest by latest type of numerical relays. Meanwhile the feature of lenticular characteristics available in micromho relay, may be used as an interim measure instead of circular characteristics feature being presently used.


(xi) With the tripping of ± 500 kV Chandrapur-Padghe HVDC link, large quantum of power gets suddenly diverted to other alternative A.C. networks and usually results in tripping of a number of lines on power swings. The Committee recommends that with the tripping of the both poles of HVDC link, generation level at Chandrapur thermal power station of MSPGCL may be brought down automatically to prevent spread of the disturbance. WRPC may work out a suitable scheme in consultation with MSETCL.

(xii) In the grid disturbance of 25th February, 2007, the ER-NR inter tie got tripped resulting in disconnection of NR grid from ER grid. Subsequently, some more inter-regional links between ER/NR and NR/WR have been added which may help in reducing the impact of a disturbance in a Region on other Regions operating in parallel. However, the committee is of the view that special protection scheme be worked out on priority and implemented between the various Regions operating in interconnected mode so as to minimize the impact of a disturbance in a region on other regions.

9.3 Recommendations pertaining to System Strengthening:

(xiii) Following the grid disturbance that took place in Western Region in November 2003, a transmission scheme to strengthen the Western Regional Transmission System (WRSS-II) was sanctioned. A part of this scheme was for regional strengthening in Southern Maharashtra, which inter-alia comprised links for strengthening of East-West corridor in Maharashtra. However, implementation of this portion of the scheme is yet to start. The committee recommends that this scheme may be implemented without any further delay.

(xiv) The earlier enquiry committees had suggested for system strengthening within Maharashtra through inter-connection of upper and lower EHV corridors in Maharashtra network (enquiry committee on grid disturbances of 21st & 26th September 2005). While the lower corridor in Maharashtra is getting augmented through 400kV Bhadrawati-Parli-Pune D/C and Navi Mumbai (Panvel)-Pune S/C and the upper corridor is getting augmented through 400kV Wardha-Akola-Aurangabad-Pune D/C, the inter-connections between upper and lower corridors in Maharashtra continues to be fragile. The inter-connections between both the corridors are essential to transfer power from one corridor to other corridor in the event of contingency in any corridor. These need to be planned and implemented at the earliest. MSETCL may take necessary action on priority.


9.4 Review of Mumbai Islanding Scheme:

(xv) In view of power number of combined grid formed with the synchronous operation of WR, ER, NR and NER grids having gone up considerably, the UFLS scheme has already been modified to operate at higher frequency levels. Accordingly the frequency level for initialization of Mumbai islanding scheme should also be modified for higher frequency level. The Committee recommends raising of frequency level from existing 47.6 Hz to 47.9 Hz. Both TPC and REL systems may start adequate load shedding at 47.9 Hz in their systems to avoid further fall in frequency of the island. The separation of TPC and REL system may take place at 47.7 Hz instead of 47.6 Hz as at present. The other features of the islanding scheme except the upgraded frequency settings as above may remain unchanged.

9.5 Other recommendations:

(xvi) For survival of Western Maharashtra the actual load relief through UFR and df/dt relays under UFLS should be of the order of 3500 MW. However the actual load relief available is much less. In the grid disturbance of 25.2.2007 also, the total load relief available in Western Maharashtra was only 769 MW which was totally inadequate and resulted in collapse of Western Maharashtra. MSETCL may look into this and ensure that under all circumstances, the desired load relief is available.

(xvii) The Inquiry Committee for the disturbances of 21st and 26th Sept 2005 in WR had made some specific recommendations in respect of Padghe and Kalwa 400 kV sub-stations. However, only a few recommendations have been implemented so far. In view of the importance of these sub-stations in Maharashtra system, Committee reiterates the need for implementing all the recommendations of these sub-stations on priority.

***********

Agenda Notes for 5th WRPC meeting to be held on 6th October2007

Annexure-7.2

Voltages at the important 400 kV substations during the period June 07 to Sept* 07

Month Indore Itarsi Karad Dhule Asoj

Max Min Max Min Max Min Max Min Max Min

Jun-07 427 385 432 389 430 387 438 393 427 398

Jul-07 425 390 435 400 438 341 440 396 424 393

Aug-07 422 396 433 399 431 390 440 400 428 400

Sep-07 424 378 433 389 430 397 440 392 424 393

Month Kasor Bhilai Jetpur Bina Gwalior

Max Min Max Min Max Min Max Min Max Min

Jun-07 430 398 423 385 422 371 439 397

Jul-07 430 398 425 397 421 382 440 390

Aug-07 429 400 422 394 425 381 440 380 428 347

Sep-07 423 401 424 396 422 364 439 386 430 352 * Position for Sept 2007 is for period upto 20.09.2007


Annexure-9 (1/2)

ANTICIPATED POWER SCENARIO IN WR FOR PERIOD FROM OCTOBER 2007 TO DECEMBER 2007 (IN MW)

Chhatisgarh Gujarat Madhya Pradesh Maharashtra Details

Oct Nov Dec Oct Nov Dec Oct Nov Dec Oct Nov Dec

Availability (MW) 2000 1900 2000 8203 8121 8121 5950 6050 6100 13400 13100 13250 Unrestricted demand (MW) 2300 2250 2300 11755 9625 9797 6200 6750 7300 17400 17950 18250 Deficit(-)/Surplus(+)

(i) MW -300 -350 -300 -3552 -1504 -1676 -250 -700 -800 -4000 -4850 -5000 (ii) % -13.04 -15.56 -13.04 -30.22 -15.63 -17.11 -4.03 -10.37 -10.96 -22.99 -27.02 -27.40

Goa DD&DNH Western Region Details

Oct Nov Dec Oct Nov Dec Oct Nov Dec

Availability (MW) 400 365 350 454 466 466 30407 30002 30287

Unrestricted demand (MW) 453 412 409 637 642 648 37148 36078 37108 Deficit(-)/Surplus(+)

(i) MW -53 -47 -59 -183 -176 -182 -6741 -6076 -6821 (ii) % -11.70 -11.41 -14.43 -28.73 -27.41 -28.09 -18.15 -16.84 -18.38


Annexure-9 (2/2)

ANTICIPATED ENERGY POSITION IN WR FOR PERIOD FROM OCTOBER 2007 TO DECEMBER 2007 (IN MUs)

Chhatisgarh Gujarat Madhya Pradesh Maharashtra Details

Oct Nov Dec Oct Nov Dec Oct Nov Dec Oct Nov Dec

Availability (MUs) 1220 1070 1180 6045 5760 5952 3250 3650 3800 8300 8350 8750 Unrestricted Requirement (MUs) 1265 1097 1213 6541 6270 6448 3400 4100 4600 8800 9530 10240 Deficit(-)/Surplus(+)

(i) MUs -45 -27 -175 -496 -510 -496 -150 -450 -800 -500 -1180 -1490 (ii) % -3.56 -2.46 -2.72 -7.58 -8.13 -7.69 -4.41 -10.98 -17.39 -5.68 -12.38 -14.55

Goa DD&DNH Western Region Details

Oct Nov Dec Oct Nov Dec Oct Nov Dec

Availability (MUs) 240 216 239 390 395 410 19445 19441 20331 Unrestricted Requirement (MUs) 262 232 252 430 435 464 20698 21664 23217 Deficit(-)/Surplus(+)

(i) MUs -22 -16 -13 -40 -40 -54 -1253 -2223 -2886 (ii) % -8.39 -6.90 -5.16 -9.30 -9.20 -11.64 -6.05 -10.26 -12.43

Annexure-11 (1/3)

S.No. Name of the transmission line No. of Length Ckts. (CKM) Original Revisised

POWERGRID765 kV lines1 Sipat -Seoni Line -1 S/C 351 Feb. 2007 Jun. 20072 Sipat -Seoni Line -2 S/C 354 Sept. 20073 Seoni-Wardha Line-1 S/C 269 Jun. 2008

Total 974400 kV lines1 Seoni- Khandwa (Quad) D/C 703 Feb. 2007 Jul. 20072 Nagda-Dehgam D/C 664 Feb. 2007 Sept. 20073 LILO of S/C Bhilai-Satpura at Seoni D/C 4 Feb. 2007 Jun. 20074 LILO of both ckt. of SSP-Nagda at Rajgarh D/C 18 Feb. 2007 Dec. 20075 Khandwa-Rajgarh D/C 440 Aug. 2007 Dec. 20076 LILO of Korba-Raipur, S/C at Bhatapara D/C 5 Aug. 2007 Aug. 20077 Bina-Nagda D/C 662 May. 2007 Mar. 20088 Vindhyachal-Korba S/C 291 Apr. 2007 Comm. on

01/06/079 Satna-Bina D/C 545 Jul. 2007 Jun. 200710 LILO of Rourkela- Raipur at Raigarh D/C 37 Jul. 200711 Sipat-Raipur D/C 296 Sept. 2007 Nov. 200712 Wardha-Akola D/C 368 Jun. 2008 Jun. 200813 Akola-Aurangabad D/C 530 Jun. 2008 Jun. 2008

Total 4563220 kV lines1 Vapi (PG)- Kharadpada (DNH) D/C 36 Aug.20082 Vapi (PG)- Magarwada (DD) & 7 Km Multi ckt portion 50 Aug. 2008

Total 86

CHHATTISGARH (CSEB)400 kV lines1 Korba (W)-Bhilai (Khedamara) D/C 400 Mar. 20082 JTPS-Raipur D/C 514 Sep. 20073 Bhilai (Khedamara)- Raipur D/C 100 Mar. 2009

Total 1014220 kV lines1 Korba-Darri-Bishrampur D/C 306 Mar. 2008 Mar. 20082 Korba(E)-Bhatapara D/C 280 Mar. 2008 Dec. 20073 LILO of Korba- Amarkantak Pendra D/C 23 Jun. 2006 Jun. 20074 Bhatapara (Suhela) - Bemetara D/C 89 Mar. 2008 Oct. 20085 Bhatapara (Suhela) - Mahasamund D/C 124 Dec. 2007 Jun. 20076 Kumhari (PGCIL)- Mandirhasod D/C 40 Mar. 2008 Apr. 20087 LILO of Korba (E)- Bhatapara 2nd Ckt. at Champa D/C 2 Mar. 2008 Mar. 20088 Bhatapara 400 kV (PGCIL)- Bhatapara S/C 30 Dec. 2007 Mar. 20099 Raigarh 400 kV (PGCIL) S/S-Raigarh S/C 12 Dec. 2007 Jun. 200810 JTPS-Raigarh Industrial Estate (Panjipatra) D/C 40 Dec. 2006 Jul. 200711 JTPS-Raigarh D/C 108 Jun. 200712 Rajendra Steel-Sitara 2nd S/C S/C 2 Jun. 200713 Siltara-Doma D/C 100 Jun. 200714 LILO Bhatapar-Kumari at Bhatapara (PG) D/C 12 Aug. 2007

Total 1168

Target

STATUS OF CONSTRUCTION OF TRANSMISSION LINES IN WESTERN REGION DURING 2007- 08

Annexure-11 (2/3)


GUJARAT (GETCO)400 kV lines1 Dehgam (PGCIL)-Ranchodpura D/C 130 Dec. 2007 Dec. 20072 LILO of Jhanor-Vapi at Akhakol D/C 20 Dec. 2008 Dec. 20083 LILO of one Ckt. of Asoj -Amreli at Chorania D/C 42 Dec. 20074 Kasor-Vapi D/C 260 May. 20085 Kasor-New Mumbai D/C 320 May. 20086 Gandhar-Hadala D/C 680 May. 20087 Gandhar-Kawas D/C 140 May. 20088 TPGL-Pirana D/C 520 Mar. 20089 Pirana-Dehgam D/C 108 Mar. 2007 Jun.200710 LILO of Jhanor-Vapi S/C at TPGL D/C 196 apr. 2007 Jun.2007

Total 2416220 kV lines1 Bardoli-Chaikali D/C 96 Dec. 20072 Rajkot-Morbi D/C 146 Apr. 2007 Jun. 20073 LILO of Kansari-Tharad D/C at Lakhani D/C 8 Mar. 2007 Jun. 20074 Dhanki-Adalsar D/C 18 Mar. 2007 Jun. 20075 Akhakol-Puna D/C 73 Apr. 2007 Jun. 20076 Akhakol-Bhatar D/C 130 Apr. 2007 Jun. 20077 Akhakol-Ved D/C 46 Apr. 2007 Jun. 20078 LILO of Vav-Jagadia on Ckt.-1 at Kosamba D/C 10 Mar. 20089 LILO of Angar Panandro both ckt. at Kukma D/C 10 Mar. 200810 GSEC-Kosmba D/C 130 Mar. 200811 LILO of 2nd ckt of Ukai (T) Vav at Bardoli D/C 10 Mar. 200812 Adalsar-Bala D/C 20 Mar. 200813 LILO of GSEC-Kim Ckt.-1 at Ichhapore D/C 10 Mar. 200814 LILO of Nanikhakhar-Shivlakha D/C at Varsana D/C 20 Mar. 200815 Utran-Kosamba 2x D/C 160 Dec. 200816 Kosamba-Mobha 2xD/C 440 Dec. 2008

Total 1327

MADHYA PRADESH (MPPTCL)400 kV lines1 LILO of Birasinghpur -Damoh D/C at Damoh (PG) 2X D/C 32 Jun. 20072 Interconnector of Birsinghpur-Katni-Damoh at Birsi'pur D/C 2 Mar. 2008

Total 34220 kV lines1 LILO of Barwaha-Nepa Nagar (Khandwa) at Omkareshwar 2xD/C 120 Mar. 20082 Birshinghpur-Jabalpur D/C 274 Sept. 2008 Mar. 20083 LILO of both ckts. of Bhopal-Itarsi at Itarsi 2xD/C 4 Apr. 2007 Jun. 20074 LILO of Birshingpur-Satna at Amarkantak D/C 88 Mar. 20085 LILO of Birshingpur-Rewa for Sidhi D/C 118 Mar. 20086 Amarkantak-Jabalpur D/C 470 Dec. 20087 LILO of Dhar-Raigarh at Raigarh (PG) 2xD/C 46 Feb. 2008 Mar. 20088 Seoni 400 kV (PG)-Seoni (MP) D/C 9 Sept. 2007 Comm. 5/079 Birshinghpur-Jabalpur D/C 20 Mar. 2008 Apr. 200810 LILO of Birshingpur (T)-Birshingpur (H) 2nd Ckts. at

Birsingpur S/SD/C 8 Dec. 2007

11 LILO of Birshingpur -Satna Ckt.-1 at Chachi D/C 88 Apr. 200812 Satna-Chhatarpur S/C 140 Apr. 200813 Shivpuri-Sabalgarh D/C 210 Apr. 200814 LILO of 1st Ckt. of Itarsi-Bhopal at Mandideep D/C 12 Mar. 200815 LILO of 1st Ckt. Damoh-Tikamgarh at Damoh (400 kV) D/C 4 Mar. 200816 LILO of 1st Ckt. of Jabalpur-Itarsi at Piparia D/C 1 Mar. 200817 LILO of Birshingpur (T)-Nowrozabad D/C at Birsingpur S/S D/C 22 Mar. 200818 Seoni (PG)-Chindwara D/C 140 Apr. 200819 Pritampur-Raigarh (2nd Ckts.) S/C 69 Apr. 200820 LILO of Pritampur-Raigarh D/C at Raigarh (PG) 2xD/C 60 Apr. 200821 Bhopal (400 kV) Ashta D/C 194 Apr. 2008

Total 2097

Target

Annexure-11 (3/3)


MAHARASHTRA (MSETCL)400 kV lines1 Dabhol-Nagothane (2nd Ckt) S/C 134 Mar. 2007 Jan. 20082 LILO of Bhusawal-Koradi 1st Ckt. at Akola D/C 80 Sept. 2007

Total 214

220 kV lines1 Theur-Jejuri D/C 38 Dec. 2006 Comm. 05/072 LILO of Malharpeth-Wankuswade for Satara MIDC S/S D/C 60 Sep. 2006 Jun. 20073 LILO of Kanhan-Umred S/C on D/C at Umred D/C 50 Apr. 2007 Jun. 20074 LILO of Apta-Chinchwad at Urse D/C 22 Mar. 2007 Dec. 20075 LILO of Dhule-Dondaicha at Amalner D/C 80 Mar. 2007 Dec. 20076 LILO Tarapur-Borivli at Boisar II D/C 16 Mar. 2007 Jun. 20077 Boisar (PG)-Wada S/C on D/C S/C 57 Mar. 2007 May. 20078 Kolhapur III -Mundhaltitta S/C 40 Mar. 2007 Apr. 20089 Kolhapur II -Kolhapur-III interconnector S/C 18 Mar. 200810 Kolhapur (400 kV)-Talandge S/C on D/C S/C 4 Mar. 200811 LILO of Karad-Kolhapur D/C at Wather D/C 6 Mar. 200812 LILO Pune Ringmain at Chakan S/C on D/C S/C 43 Mar. 200813 Talegaon 400 kV (PG) S/S -Talegaon 220 kV S/S D/C D/C 20 Mar. 200814 LILO of Pusad-Nanded (ckt.-1) at Hingoli D/C 72 Mar. 200815 LILO of Nasik-Kalwa Ckt. 3 & 4 at Bapgaon 2x D/C 6 Mar. 200816 LILO of Padghe-Wada (Ckt-1) at Kudus D/C 2 Mar. 200817 LILO of Kalwa-Padghe (Ckt-1) at Airoli (Knowledge Park) D/C 2 Mar. 200818 LILO of Kandalgaon -Chinchwad D/C at Hinjewadi-II 2x D/C 6 Mar. 200819 LILO of Theur-Jejuri D/C on M/C at 2x D/C 30 Mar. 200820 WCL Ghugus-Matradevi D/C 30 Mar. 200821 LILO of Khaperkheda-Bhandara both ckts at Kanan 2x D/C 20 Mar. 200822 Satara MIDC -Vankusawade D/C 30 Apr. 2007 Comm. 04/07

Total 652GOA220 kV lines

Xeldem-Cuncolin D/C 20 Jun. 2007

Target

Annexure -12 (1/2)

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

Schedule Date of Commissioning

A GUJARATProjects under constructions:

1 Dhuvaran CCGT St.II Stage-II-ST 112.45 2007-082 Kutch Lignite TPS 4 75 Sept.20073 Sugen CCPP- Torrent Power Block -1 110 Jul. 2007

Block-2 110 Oct. 2007Block-3 110 Jan. 2008

4 Surat Lignite expansion- GIPCL 1 125 Nov. 20082 125 Mar. 2009

New Projects for which LOA yet to be placed:5 Utran GPP 360 Jul. 20096 Sikka TPP Extn. 3 250 Feb. 2010

4 250 Jun. 20107 Ukkai TPS Extn. 1 490 Jun. 20118 Gujarat Lignite-NLC & GPCL joint venture Stage-I 1500 2011-12

Stage-II 500 2012-139 Pipavav CCPP- GPCL & GSPC joint venture 1 350 Mar. 2010

2 350 Jun. 201010 Hazira CCPP Expansion GSEG 350 Feb. 201011 Dhuvaran CCPP GSECL Stage-III 360 Mar. 201012 Pipavav TPP- Torrent Power 1000 2011-1213 Bhavnagar Lignite TPP-joint venture 500 Apr. 2011B MADHYA PRADESH

Projects under constructions:1 Birsinghpur TPP Extn. 1 500 Sync. 18.06.072 Amarkantak TPS 5 210 Sept.20073 Omkareshwar HEP- NHDC 1 & 2 65x2 Unit-1 Comm. on 21.07.07

3 & 4 65x2 Aug. 20075 & 6 65x2 Sept.20077 & 8 65x2 Oct. 2010

4 Maheshwar HEP - 400 2010-11Projects for which LOA yet to be placed

5 Malwa TPP 1 500 Dec. 20102 500 Apr. 2011

6 Satpura TPS Extn. 10 250 Mar. 201111 250 Sept.2011

7 Sahpura TPP 1 500 Dec.20122 500 Mar. 20133 500 Jun. 2013

C CHHATTISGARHProjects under constructions:

1 Korba TPS (E) Extn. Stage-V 2 250 Jul. 20072 Raigarh TPP Ph-I - Jindal (Pvt) 1 250 Jul. 2007

Raigarh TPP Ph-I & II - Jindal (Pvt) 2 250 Oct. 20073 250 Dec. 20074 250 Mar. 2008

3 Pathadi TPP (Lanco) 1 300 Sept. 20082 300 Jul. 2009

Projects for which LOA yet to be placed 4 Bhaiyathan TPP Phase-I 1 500 Apr. 2011

2 500 Oct. 20115 Marwa TPP 1 500 Nov. 2010

2 500 Feb. 20116 Korba South TPP 1 500 Apr. 2011

2 500 Oct. 20117 Premnagar TPP Surguja joint venutre of CSEB & IFFCO 1 Oct. 2010

2 Mar. 2011

NEW GENERATION SCHEMES ENVISAGED DURING 11th PLAN IN WESTERN REGIONAL


Annexure -12 (2/2) S.No. Name of the Power Projects Unit No. Capacity

(MW)Schedule Date of Commissioning

D MAHARASHTRA Projects under implementation:

1 New Parli TPS Extn. 2 250 Feb. 20092 Paras TPS Extn. 2 250 Apr. 20093 Khaperkheda TPP 1 500 Mar. 20104 Bhusawal Extn. TPP 1 500 Jun. 2010

2 500 Oct. 20105 Trombay TPP- TPC 1 250 Oct. 20086 Ghatghar HPS (Hydro) 1&2 2 X 125 2007-08

Projects for which LOA yet to be placed:7 Koradi TPS Extn. 1 800 Nov. 20118 Chandrapur TPS Extn. 1 800 Nov. 20119 Dhopawe TPP 1 800 Nov. 2011

2 800 May 201210 Uran CCPP Block-1 700 Dec. 2009

Block-2 340 Mar. 2010Projects proposed under Replacement Programme:

11 Koradi TPS Extn. (Replacemet of 4 x 120) 1 800 May 201212 Parli TPS (Replacement of 2x30) 1 250 Aug. 200913 Paras TPS (Replacement of 1x62.5) 1 250 Sept. 200914 Bhusawal TPS (Replacement of 1x62.5) 1 250 Oct. 2009E CENTRAL SECTOR - NTPC

Projects under implementation:1 Sipat-II TPP 4 500 Comm. on 27.05.2007

5 500 Sept. 20072 Sipat-I TPP 1 600 Mar. 2008

2 600 Sept. 20083 600 Mar. 2009

3 Bhilai TPP (Joint venture with SAIL) 1 250 Feb. 20082 250 Aug. 2008

4 Korba STPS-III 7 500 Feb. 20105 Mauda TPP 1 500 2011

2 500 20126 Ratnagiri PGCL (Dabhol) CCPP-II joint venture GTs+STs 740 2007-08


Government of India kond`Iya ivaVut p`aiQakrNa … · Sub.: Agenda Notes of the ... HVPNL letter...

Documents

Transcript of Government of India kond`Iya ivaVut p`aiQakrNa … · Sub.: Agenda Notes of the ... HVPNL letter...