दव ण त र य व द य त सवमवत

Transcription

1 भ रत सरक र GOVERNMENT OF INDIA व द य त म त र लय MINISTRY OF POWER क द र य व द य त प र व करण CENTRAL ELECTRICITY AUTHORITY दव ण त र य व द य त सवमवत SOUTHERN REGIONAL POWER COMMITTEE तकन क सम तत क पच च सव ब ठक क क र यव त MINUTES OF THE 25 TH MEETING OF TECHNICAL COORDINATION COMMITTEE ब गल र BENGALURU

2 CONTENTS 1. INTRODUCTION CONFIRMATION OF THE MINUTES OF 24 th MEETING OF TCC UPCOMING TRANSMISSION SYSTEM TRANSMISSION LINES APPROVED IN 37 th MEETING OF SCPSPSR NEW PROJECTS OF NTPC, NLC, NPCIL, JOINT VENTURE& UMPP NEW PROJECTS OF STATE SECTOR & IPP COAL STOCK POSITION IN THERMAL STATIONS OF SOUTHERN REGION SIMHADRI STPS SCHEDULES FOR TO EMERGENCY RESTORATION SYSTEM (ERS) PROGRESS OF BUS/LINE REACTORS TO BE COMMISSIONED IN SR STUDY GROUP OF SLDCs TO ASSESS TTC/ATC AND OPERATIONAL PLANNING SEMs ON ALL FEEDERS FOR SECTIONAL LOSSES IEGC RELATED ISSUES REQUIRING ATTENTION/ACTION REVIEW OF PERFORMANCE OF ULDC SCHEME PENDING ARREARS PAYMENT BETWEEN BENEFICIARY STATES IN SR OUTSTANDING DUES BETWEEN WR & SR UNIFORM RATE OF CHANGE OF FREQUENCY RELIEF SCHEME SPS FOR OVERLOADING OF 400 kv KOLAR HOSUR LINES DETAILS OF PENDING REMEDIAL MEASURES DISCUSSED AND FINALIZED IN PCC WHEELING CHARGES PAYABLE BY GOA TO KARNATAKA UTILIZATION OF TERTIARY WINDING OF ICTS FOR AUXILIARY POWER SUPPLY IN SUBSTATIONS PROCUREMENT OF 500 MVA ICT AS SPARE INSTEAD OF 315 MVA ICT APPROVED UNDER RAMAGUNDAM TRANSMISSION SYSTEM PROCUREMENT OF 3x125 MVAR REACTORS INSTEAD OF 3 x 50 MVAR REACTORS APPROVED UNDER RAMAGUNDAM TRANSMISSION SYSTEM CONVERTING FIXED LINE REACTORS INTO SWITCHABLE LINE REACTORS IN OVER COMPENSATED LINES CERC ORDER ON UPCL POWER EVACUATION ISSUE RE-CONSTITUTION OF THE VALIDATION COMMITTEE UNDER REGULATION 7(1)(g) (SHARING OF INTER STATE TRANSMISSION CHARGES AND LOSSES) REGULATIONS, UTILIZATION OF PSDF TO DEVELOP INTER- STATE TRANSMISSION SYSTEM TO RELIEVE TRANSMISSION CONSTRAINTS EARLY COMMISSIONING OF 765 kv VEMAGIRI-KHAMMAM-HYDERABAD-WARDHA TRANSMISSION SYSTEM FOR THE ENHANCEMENT OF INTERREGIONAL TRANSMISSION CAPACITY BETWEEN NEW GRID AND SR Minutes of the 25 th Meeting of TCC of SRPC held on 19 th December of 68

3 29 PUBLISHING THE RESULTS OF SYSTEM STUDIES BY CTU IN COMPLIANCE WITH REGULATION 20 OF THE CERC (GRANT OF CONNECTIVITY, LONG TERM AND MEDIUM TERM OPEN ACCESS) REGULATIONS, DIFFERENCE IN COMPUTATION OF CAPACITY CHARGES OF NTPC STATIONS AS PER CERC REGULATIONS ( ) KPTCL DENYING NOC FOR OPEN ACCESS FOR POWER CONTRACTED FROM UDUPI POWER CORPORATION LTD DOUBLING OF 110 KV KONAJE-MANJESHWARAM S/C FEEDER PROVISION OF ADDITIONAL SPACE IN SRPC SECRETARIAT / OTHER CIVIL WORKS S3 REGION TO BE FORMED BY BIFURCATING S2 AND ATC TO BE CALCULATED FOR S2-S3 REGION BY FOLLOWING THE N-1 CONDITION IN 400 kv UDUMALPET PALAKKAD D/C LINES GRID OPERATION DEMAND VARIATION (Peak Vs Off-peak) FREQUENCY OF OPERATION OF SOUTHERN GRID URTDSM (PMU) PROJECT IN SOUTHERN REGION DRAWAL POINTS OF COASTAL ENERGEN PAYMENT OF TRANSMISSION CHARGES & OPENING OF LC FOR DRAWAL OF START UP POWER DURING COMMSSIOING PERIOD BY GENERATING STATIONS AUDITING OF ACCOUNT - ANNUAL SUBSCRIPTION FOR CONDUCTING VARIOUS COMMITTEE MEETINGS OF SRPC DATE & VENUE OF THE NEXT TCC MEETING VOTE OF THANKS Minutes of the 25 th Meeting of TCC of SRPC held on 19 th December of 68

4 SOUTHERN REGIONAL POWER COMMITTEE BENGALURU MINUTES OF THE 25 th MEETING OF TCC OF SRPC HELD AT VISAKHAPATNAM ON 19 th DECEMBER INTRODUCTION 1.1 The 25 th Meeting of Technical Coordination Committee of SRPC was held at Visakhapatnam on 19 th December The list of participants is furnished at Annexure-I. 1.2 Shri V.Sekhar, Executive Director, SRTS-I, PGCIL extended a hearty welcome to all the participants to the Port City of Visakhapatnam. On behalf of SRTS-I, he thanked SRPC forum and also Director (O), PGCIL for having been given the opportunity to host the TCC & SRPC Meetings. After the cyclone which had hit the city during October 2014, bulk of the power restoration works had been ensured within one week. This was made possible with the relentless efforts of APTRANSCO (under the able guidance of Shri S. Subrahmanyam, Director), APEPDCL, NTPC, PGCIL and other power utilities. Power to Vizag city was restored within 24 to 48 hours, while power was made available to all Districts within 4 days. In line with the national vision of ensuring 24 x 7 Power, Government of AP had also enabled similar initiatives in the state. The SRPC forum was taking all necessary steps in resolution of various issues and ensuring a platform for growth of the power sector in Southern Region. He commended SRPC Secretariat for bringing out a structured Agenda clearly outlining the issues. During the period March 2013 to December 2014, major achievement of interconnecting SR with NEW Grid had been fulfilled with commissioning of 765 kv Raichur- Sholapur D/C line, 765 kv Raichur-Kurnool, 765 kv Kurnool- Thiruvalam D/C line, 400 kv Nellore-Kurnool line and 400 kv Thiruvalam - Kalavindapattu lines etc. The region was having around 1,000.Kms of 765 KV lines PGCIL was also confident of completing 400 kv Gooty-Madhugiri D/C line shortly. About 9,000 MVA of transformation capacity had been added during the period December 13 to March Most of the lines had been completed either ahead of schedule or as per schedule. Prestigious project of 6,000 MW Raigarh-Pugalur HVDC link had recently been awarded to PGCIL by the Empowered Committee. He thanked the SRPC forum for having recommended the same to the Empowered Committee. AP Minutes of the 25 th Meeting of TCC of SRPC held on 19 th December of 68

5 and Telangana were having ambitious plans for solar renewable power integration into the Grid. PGCIL had taken proactive steps to ensure evacuation from the proposed 1,000 MW Ultra-Mega Solar Park in Ananthapur District of Andhra Pradesh. He also appreciated Shri Kanik Ram, GM (O&M), SR-I, PGCIL and his team for their efforts for the smooth conduct of the Meetings. He wished fruitful deliberations and comfortable stay to all the delegates. 1.3 Shri S.R.Bhat, Member Secretary, SRPC welcomed Shri S.Sumanth, Chairperson TCC, other Members and Participants to the Meeting. He thanked Shri V.Sekhar, ED and his team for making outstanding arrangements for the conduct of the Meeting. On behalf of TCC, he placed on record, the contribution of Power Utilities of AP, PGCIL, POSOCO, NTPC and other SR Constituents for facilitating speedy normalization measures after the recent cyclone. Power supply to critical Vizag Steel Plant had been restored at the earliest. Senior officials had also camped at site and taken all steps thereby ensuring speedy restoration of power supply. He complimented Shri S.Sumanth, Chairperson TCC for his leadership in enabling quantum jump of about 1,000 MW in UFR SCADA visibility since the last TCC Meeting. He added that PGCIL under the able leadership of Shri V.Sekhar, ED had been able to complete a number of lines in SR in a timely manner despite ROW issues etc. 1.4 Shri S.Sumanth, Chairperson TCC & Director (Transmission), KPTCL welcomed all the Members and participants to the Meeting. He thanked Shri V Sekhar, ED and his team for the wonderful arrangements. He hoped that the deliberations in the Meeting would be fruitful. 1.5 TCC welcomed the following new Members: Shri M. Sachidanandam, Director (Thermal), TSGENCO Shri K.M. Nagender, Director (O), TSSPDCL Shri K.M. Suresh Babu, Executive Director (Thermal), NLC 1.6 TCC also placed on record the excellent services rendered by the following outgoing Members: Shri K Vikraman Nair Director ( Tr & SO), KSEB Shri T. Avudaithangam, Executive Director (Thermal), NLC Minutes of the 25 th Meeting of TCC of SRPC held on 19 th December of 68

6 2. CONFIRMATION OF THE MINUTES OF 24 th MEETING OF TCC Minutes of the 24 th Meeting of Technical Coordination Committee of SRPC held on 25 th July 2014 at Chennai were confirmed. 3. UPCOMING TRANSMISSION SYSTEM 3.1 Perspective Transmission Plan for Twenty Years ( ) Highlights MoP in association with CEA, CTU and POSOCO had brought out the Perspective Transmission Plan for 20 Years ( ) and following are the highlights: Load generation balance shows that deficit in Southern Region is about 13,000 to 19,100 MW at the end of 13 th Plan ( ) conditions. Summary of Inter- Regional Transmission Capacity Corridor towards SR is given below: Transmission Element Existing Transmission Capacity in MW 12 th Plan addition End of 12 th Plan 13 th Plan addition Balimela-Upper Sileru 220kV S/c Gazuwaka HVDC back-to-back Talcher-Kolar HVDC bipole Upgradation of Talcher-Kolar HVDC Bipole Angul - Srikakulam 765kV D/c line Angul - Srikakulam 765kV D/c line (2nd) Total EAST-SOUTH ,030 Chandrapur HVDC back-to-back Kolhapur-Belgaum 220kV D/c Ponda Nagajheri 220kV D/c Raichur - Sholapur 765kV S/c line (PG) Raichur - Sholapur 765kV S/c line (Pvt. Sector) Narendra - Kolhapur 765kV D/c (ch at 400kV) Wardha - Nizamabad 765kV D/c line Raigarh - Pugalur +/- 800kV, 6000 MW Bi-pole Warora Pool - Warangal 765kV D/c line WEST - SOUTH ,320 Minutes of the 25 th Meeting of TCC of SRPC held on 19 th December of 68

7 ISTS drawal requirement of each State in had been assessed as follows : State Demand Met MW Peak Demand as p EPS Increment Load State Generation Despatch Import requirement through ISTS %ge of Peak AP % Karnataka % Kerala % TN % Telangana % State wise annual peak demand for SR constituents is as given below : State/UT 14 th Plan (as per EPS) th Plan (as per EPS) AP/Telangana Karnataka Kerala TN Puducherry Estimate for Southern Region 1,18,764 1,65,336 1,88,730 Load generation balance shows the import assessment for Southern Region in different scenarios as given below : Generation Scenario Scenario I (Normal Generation as per plan / resource availability) Scenario II (Less gas met through imported coal with respect to Scenario I) 14 th Plan ( ) 15 th Plan ( ) Requirement for Major Transmission Corridors had been assessed as given below : 13 th Plan 14 th Plan 15 th Plan ( ) ( ) ( ) ER/NER-SR WR-SR SR-Sri Lanka Minutes of the 25 th Meeting of TCC of SRPC held on 19 th December of 68

8 3.1.2 For coordinated development process aiming at perspective optimization in meeting growth targets, it was thought appropriate that State Transmission Utilities prepare their State Electricity Plans appropriately, focusing on specific requirements of the concerned State. In Petition No SM/011/2014 before Hon ble CERC, it had been stipulated that CTU and STUs shall coordinate with each other and other agencies so that implementation of ISTS and associated downstream/upstream ISTS is carried out in a matching time frame so that no asset remains stranded or underutilized and the intended purpose of the scheme was realized. Deliberation in the Meeting: Member Secretary, SRPC stated that in earlier Meetings, it had been suggested that a Big Picture be deliberated in SRPC forum which would help in assessment of bottlenecks and ensure timely corrective actions. MoP in association with CEA/CTU/POSOCO had come up with Perspective Transmission Plan for coming two decades. The plan was under draft stage and comments had been sought. The need for coordinated development by CTU and STU had been highlighted for optimal planning and utilization of transmission assets. In a recent petition before Hon ble CERC, the issue regarding stranded assets due to non-completion of downstream assets was being heard. Proof of coordination and action taken by the concerned utilities had been sought. Section 38 (2) and Section 39 (2) of the Electricity Act clearly demarcate the responsibility of CTU and STU in the process DGM, CTU stated that SRPC Secretariat had carried out a commendable job in highlighting important issues from the Perspective Plan. As could be seen the projected ISTS import requirements for the states was quite high and varying between 39% and 82%. Regional Demand which was currently around 38,500 MW was expected to rise by 50,000 MW and reach about 87,500 MW by By , the demand of SR was expected to rise to 1, 19,000 MW (about current all India demand). An action plan with concerted efforts was therefore required, considering the quantum jump in demand and various bottlenecks likely in development of the transmission system. He suggested constitution of a Task Force in this regard Director (T), KPTCL observed that KPTCL was planning 1,000 Km of 400 kv transmission lines. It was noted that the Tables projected pertained to the likely LGBR considering requirement as per EPS figures and anticipated availability as per proposed Minutes of the 25 th Meeting of TCC of SRPC held on 19 th December of 68

9 generation addition etc. The difference between requirement and local availability indicated the level of dependence on ISTS in bridging the gap TSTRANSCO stated that state generation dispatch for the year appeared to be on the lower side. The State Government was having ambitious plan for generation additions and the drawal from ISTS could be of the order of about 9,640 MW. It was suggested to TSTRANSCO that they may convey revised projected figures to CEA at an early date ED, SRLDC said that state network too was required to be built in a coordinated manner with ISTS for effective and full utilization MS, SRPC said that the Plan had been prepared with due consultation and inputs from the state utilities. However, States could immediately convey their comments to CEA in event of changes. He said that as suggested by PGCIL, a Task Force could be constituted which would validate data; finalize action plan to achieve the desired results and sort out any coordination issue between CTU/STU/Generators After deliberations, it was noted that sustained coordination was required between CTU and STU to achieve the desired results. It was therefore agreed to form a Task Force at the level of Chief Engineers to study and validate the LGBR projections, Inter Regional Import requirements, ISTS requirements etc. Task Force would also assess the intra state transmission system requirement (keeping in view the planned network). CTU agreed to be associated with this Task Force. 3.2 Associated Transmission System in respect to 765 kv Raichur-Sholapur lines Updated status of commissioning of the planned (18 Nos.) transmission elements in WR and SR for proper utilization of 765 kv Raichur-Sholapur line is as follows: Sl. No. Name of Transmission Element 1. Aurangabad- Pune 400 kv D/C 2. Parli-Pune 400 kv D/C Exe. Agency Date as noted in CEA Mtg. held on Expected date Remarks Reliance Dec Completed Reliance Dec Completed Comments Minutes of the 25 th Meeting of TCC of SRPC held on 19 th December of 68

10 3. Raipur-Wardha 765kV D/C PGCIL May 2014 Nov Commissioned on Delayed forest clearance 4. Raipur 765/400 kv S/S PGCIL Dec Completed It is a pooling station. Interconnecting links Commissioned 5. Wardha- Aurangabad 765kV D/C 6. Aurangabad 765/400 kv S/S 7. Sholapur-Pune 765 kv S/C 8. Pune 765/400 kv S/S 9. Gooty- Madhugiri 400 kv D/C 10. Madhugiri 400/220 kv S/S 11. Madhugiri- Yelahanka 400 kv D/C line PGCIL July 2014 Commissioned in July 2014 PGCIL July 2014 Completed in July 2014 PGCIL Oct.2014 Jan-2015 Pune s/s critical. Line being planned for commissioning earlier bypassing Pune through contingency. Severe RoW problem. PGCIL Oct March 2015 Civil work under progress PGCIL June 2014 March 2015 Critical RoW problems faced towards Karnataka end PGCIL June 2014 March 2015 Erection under progress PGCIL June 2014 March 2015 Severe Row Problem One Circuit Commissioned on against severe RoW constraints Interconnecting network in progress: 400 kv Aurangabad- Padghe (expected in June 2015), 400kV Aurangabad-Boisar (expected in March 2015), 400 kv Padghe - Padghe (Kudus) (expected by June 2015), MSETCL to take up commissioning of Padghe (Kudus) S/S by June 2015 Sever RoW Problem. Line is being charged through Parli by bypassing Pune S/S which is expected by March 2015 Land acquisitioned delayed, Expected commissioning by March 2015, Civil works and erection activity in progress Hold continues at 10 locations in District Tumkur. Stringing has been stopped since Feb 2014 Downstream network not available Severe RoW problem at Tumkur (30 Loc), Bangalore Rural (35 Loc) and Bangalore Urban (10 Loc) Minutes of the 25 th Meeting of TCC of SRPC held on 19 th December of 68

11 12. Raichur- Kurnool 765 kv S/C PGCIL Aug Commissioned on 21st June 2014 Commissioned on 21st June Kurnool 765/400 kv S/S PGCIL Aug Commissioned Commissioned Downstream network ready 14. Kurnool- Thiruvalam 765 kv D/C PGCIL Nov Commissioned on Downstream network ready 15. Thiruvalam 765/400 kv S/S PGCIL Nov kv by Feb kV Commissioned 765 kv by Feb Vijayawada- Nellore 400 kv D/C PGCIL Nov March RoW problem being faced at Krishna Dist. (49 Loc) & Guttur Dist (23 Loc) RoW continuing, efforts being made including the Power Secretries meet in SR Chaired by Union Power Secretary 17. Nellore- Thiruvalam 400 kv D/C 18. Thiruvalam- Melakottaiyur 400 kv D/C PGCIL PGCIL Nov Nov July 2014 Commissioned on Commissioned on Commissioned on Additional ATC (as on date) between WR - SR on account of this link was around 350 (1, ) MW TANTRANSCO vide letter dated 29 th November 2014 (Annexure- II) had stated that status of remaining lines comprising associated transmission system in WR & SR for 765 kv Raichur-Sholapur 2 x S/C line may be deliberated. The probable quantum of power increase in WR-SR corridor due to commissioning of new lines in WR & SR had also been proposed to be discussed KSEB vide letter dated 8 th December 2014 (Annexure-III) had stated that status of lines likely to relieve S1-S2 congestion be discussed in the Meeting. Suitable action plan may be evolved for early commissioning of the same, including time frame. Deliberation in the Meeting: ED, SR-II, PGCIL expressed concern that though 400 kv Gooty - Madhugiri D/C line would come up, the downstream system at Madhugiri as well as Yelahanka may not be ready by that time. Minutes of the 25 th Meeting of TCC of SRPC held on 19 th December of 68

12 3.2.6 ED, SRLDC stated that the utilities were anticipating increase in ATC with commissioning of new elements. However, in the event downstream system at Madhugiri and Yelahanka did not come up in the matching time frame, it would not be possible to enhance the ATC Director (T), KPTCL informed that Compensation issues were under consideration of the Govt. of Karnataka and would be settled within 3 months. He added that complete downstream evacuation from Madhugiri and Yelahanka had been planned. 220 kv D/C evacuation lines had been planned from Madhugiri. Initially at Madhugiri, about 500 MVA of evacuation would be possible by July With regard to Yelahanka, KPTCL Board had decided that complete evacuation would be through UG Cable ( 6 kms) since O/H lines were not feasible. 1,500 MVA of evacuation was planned from Yelahanka and KPTCL was going for adequate capacity cables despite the high cost involved. It could take 6 to 8 months for the evacuation system at Yelahanka to come up ED, SR-I, PGCIL informed that stringing on towers was pending on Gooty- Madhugiri lines on account of local compensation issue. Once compensation issues are finalized by Karnataka Govt. the pending works could be completed CTU informed that the NEW Grid to SR ATC could be increased by 900 MW with commissioning of 765 kv Sholapur Pune S/C line, 400 kv Gooty- Madhugiri- Yelahanka D/C line and downstream system at Madhugiri and Yelahanka by March It was clarified that presently Madhugiri substation would be charged at 400 kv level. With generation addition etc subsequently, charging at 765 kv level could be planned. Contingency arrangement of bypassing Pune S/S would be in place by March MD, TANTRANSCO informed that 400 kv Thiruvalam - Mettur D/C line was stuck up at 7 locations (out of 799 locations) and they were planning to commission the same by January 2015, five months ahead of schedule PGCIL enquired from TANTRANSCO about the revival of the failed transformer at Thiruvalam. ED, SRLDC expressed concern that information regarding transformer failure at Thiruvalam had not been conveyed to SRLDC. TANTRANSCO clarified that the information regarding transformer failure had been duly communicated to SRLDC. TANTRANSCO informed that the failed transformer has been replaced by a new transformer. Final commissioning test were continuing and the same would be commissioned within 10 days Director(T), KPTCL said that it was a fact that Madhugiri and Yelahanka downstream system would come up in stages from June/July 2015.This factor would need to be considered while declaring ATC/TTC for different corridors. Minutes of the 25 th Meeting of TCC of SRPC held on 19 th December of 68

13 DGM, CTU informed that ATC from S1-S2 would be enhanced in stages with commissioning of 765 kv Salem Madhugiri line, 400 kv Mettur- Thiruvalam D/C lines, 400 kv Mysore Kozhikode D/C lines and 400 kv Somanahalli New Salem D/C lines. ATC would also depend on the commissioning of KKNPP (2,000 MW), NTPL (1,000 MW), NLC TS-II Expn (500 MW) BHAVINI (500 MW) and NTECL Vallur 3 rd Unit (500 MW) etc. Earlier during May 2014 TN, Kerala, CTU & CEA were associated in studying ATC/TTC computations. A participative approach with mutually acceptable collective assumptions was required to be adopted to finalize TTC/ATC computation, especially since spatial distribution of loads etc was involved MS, SRPC also stressed on the need for participative approach in finalization of ATC/TTC. The same needed to be backed up with technical rationale and assumptions on a collective basis. Some issues had been raised regarding ATC/TTC of CTU and of POSOCO. However, it could be kindly appreciated that the horizons and assumptions in this regard were different CE(SO), KSEB suggested that the studies be periodically undertaken with participation from the utilities It was agreed that the Study Group would also look into various ATC related issues with commissioning of lines and Generation. CTU agreed to associate with the Study Group. 3.3 Status of upcoming Inter-Regional links Narendra-Kolhapur 765 kv D/C line Transmission Element Kolhapur- Narendra (New) 765 kv D/C line (initially charged at 400 kv) LILO of both circuits of Kolhapur Mapusa 400 kv D/C line at Kolhapur Narendra (New) Narendra (Existing) 400 kv (quad) D/C line Implement -ing Agency Line length (ckm)/ MVA Capacity Sch. COD Ant COD/ Act COD PGCIL 376 April 15 Dec 15 PGCIL 90 April 15 Dec 15 PGCIL 354 April 15 Dec 15 Constraints/ Remarks Completion matching with Kudgi S/S (Land acquired in Feb 14). Efforts being made to complete in Completion matching with S/S. Efforts being made to complete in Completion matching with S/S. Efforts being made to complete in Minutes of the 25 th Meeting of TCC of SRPC held on 19 th December of 68

14 Kolhapur 765/ 400 kv S/S (GIS) (initially charged at 400 kv) Narendra (New) 765/ 400 kv S/S (GIS) (initially charged at 400 kv) Extn. at Narendra (Existing) 400/ 220 kv S/S Kudgi TPS Narendra (new) 400 kv 2xD/C Line Narendra (new) - Madhugiri 765 kv D/C Line Madhugiri - Bidadi 400 kv D/C (quad) Line PGCIL April 15 Dec 15 PGCIL April 15 Dec 15 PGCIL April 15 Dec 15 M/s Kudgi Transmissi on Limited (L&T Infrastruct ure Developm ent Projects Ltd.) Feb 15 Dec 15 Dec 15 Dec 15 Sept 16 Sept 16 Award placed in Feb 14. Engg. & Civil works under progress. Award placed in Mar 14. Land acquired in Feb 14. Civil works under progress. Award placed in Mar 14. Engg. in progress. Completion matching with Narendra- Kolhapur line. Deliberation in the Meeting: ED, SRLDC said that Kudgi generation would get stranded in case 400 kv Kudgi- Narendra (New), Narendra (New) Madhugiri and Madhugiri - Bidadi lines get delayed. He added that there could be issues relating to drawal of Startup Power as well NTPC and KPTCL clarified that startup power was being arranged through 220 kv system of KPTCL and the system was in advanced stage of commissioning Wardha - Nizamabad 765 kv D/C line Transmission Element Implementing Agency Line length (ckm)/ MVA Capacity Sch. COD Ant COD/ Act COD Constraints/ Remarks Wardha-Nizamabad 765 kv D/C line PGCIL 250 Wardha Raipur PS 765 kv D/C line PGCIL 713 Dec 15 Commissioned on Extn. of Raipur 765 kv S/S PGCIL Dec 15 Completed Minutes of the 25 th Meeting of TCC of SRPC held on 19 th December of 68

15 Extn. of Wardha 765 kv S/S PGCIL Dec 15 June 15 Engg. & Civil Works under progress Wardha Aurangabad 765 kv D/C line PGCIL 701 Dec 15 July 14 Extn. of Aurangabad 765 kv S/S Extn. of Wardha 765 kv S/S PGCIL Dec 15 Feb 15 Completed PGCIL Dec 15 Feb 15 Award placed in June 13. Engg., supply, civil works & erection are under progress Nizamabad- Maheshwaram PG (Hyderabad) 765 kv D/C line Nizamabad- Dichipalli 400 kv D/C line Nizamabad- Yeddumailaram (Shankarapalli) 400 kv D/C line Maheshwaram PG 765/400 kv, 2x1500 MVA S/S Nizamabad 765/400 kv, 2x1500 MVA S/S PGCIL 250 PGCIL PGCIL PGCIL This line along with Maheshwaram PG - Mahboobnagar 400 kv D/C line was recommended for implementation through tariff based competitive bidding (TBCB) route. Project was recommended to GoI for notification In the Meeting, CTU informed that regarding 765 kv Wardha- Nizamabad D/C lines, tenders had been floated WR-SR 6000 MW HVDC Bipole Link [Raigharh (Chhatisgarh) -Pugalur/ Trichur (TN/KER)] Transmission Element WR-SR HVDC Bipole Link [Raighar (Chhatisgarh) - Pugalur (Tamil Nadu)] Implementing Agency PGCIL Line length (ckm)/ MVA Capacity Sch. COD Ant COD/ Act COD Constraints/ Remarks The scheme was originally designed for import of 4000 Minutes of the 25 th Meeting of TCC of SRPC held on 19 th December of 68

16 Raigarh (existing) - Raigarh (HVDC Stn) 400 kv 2xD/C (quad) lines 6000 MW, HVDC Terminal Station at Raigarh 6000 MW, HVDC terminal Station at Pugalur (or alternatively (i) with 4000 MW HVDC terminal, and (ii) 2000 MW HVDC terminal at Madakathara, and interconnection with existing 400 kv AC Substation at Madakathara. Raigarh (HVDC Stn) - Pugalur(HVDC Stn) 6000 MW, +/- 800 kv HVDC bipole. Pugalur HVDC station- Pugalur existing S/S 400 kv D/C(Q) Line Pugalur HVDC station-arasur S/S 400 kv D/C (Q) line with 80 MVAR switchable line reactor at Arasur end. Pugalur HVDC station- Thiruvalam S/S 400 kv D/C (Q) line with 80 MVAR switchable line reactor at both ends Pugalur HVDC station- Edayarpalayam S/S400 kv D/C (Q) line with 63 MVAR switchable line reactor at Edayarpalayam end Edayarpalayam S/S- Udumalpet S/S400 kv D/C (Q) Line 400/230 kv, 2x500 MVA, Edayarpalayam S/S with 2x125 MVAR bus reactors x500 MW and put up before SCPSPSR-36 for approval. However, to cater to the huge import requirement of power, the Committee suggested that studies for 6000 MW capacity and additional strengthening be carried out and put up for discussion in the next Standing Committee (37 th ) meeting. Accordingly the scheme has been modified and discussed in SCPSPSR-37, when KSEB requested to construct this link as a multi-terminal HVDC with one Inverter station of 4000 MW at Pugalur and another Inverter station of 2000 MW capacity at Madakathara in Kerala by extending the same HVDC up to Madakathara to enable it to import power from outside. It was decided that the same would be explored and finalized in the next meeting of SCPSPSR. The matter regarding proposed HVDC link between Raigarh - Pugalur had been discussed in the 25 th Meeting of SRPC. After discussions it had been felt prudent to recommend to Ministry of Power that this proposed link be developed by Power Grid Corporation at the earliest. Only Power Grid Corporation had the desired technical and financial expertise to take up the project in a timely manner. Accordingly, Chairperson, SRPC vide letter dated 25 th September 2014 (Annexure-IV) had taken up the matter with Secretary (Power), Government of India. Minutes of the 25 th Meeting of TCC of SRPC held on 19 th December of 68

17 Deliberation in the Meeting: ED (Engg.-HVDC), PGCIL appraised the forum about the different configurations and technology options for Multi-Terminal HVDC Link. Decision on the configuration and technology option was critical. In one option, the voltage level from Pugalur to Madakathara could be brought down thereby considerably reducing the RoW requirement. Use of cable partially in Kerala portion could also be contemplated. On a query it was informed that this would be the third link of +/- 800 kv, the first being from North East to Agra and the second one from Champa to Kurukshetra Director (T), KPTCL suggested that usage of Covered Conductor could be explored which would help considerably reduce the RoW requirement on the Pugalur - Madakathara Section It was agreed that PGCIL would circulate different technology options/configurations for consideration. The matter would be further deliberated in the Standing Committee on Power System Planning Angul - Srikakulam PS 765 kv D/C line Transmission Element Implementin g Agency Line length (ckm)/ MVA Capacity Sch. COD Ant COD/ Act COD Constraints/ Remarks Angul - Srikakulam PS 765 kv D/C line Extn. 765/400 kv Angul Sub station 765 kv D/C Angul- Jharsuguda line 765 kv D/C Jharshuguda- Dharamjayagarh line Extn. of 765/ 400 kv Angul SS Extn. of 765/ 400 kv Jharshuguda SS PGCIL 552 Jun'15 Jun'15 PGCIL PGCIL 1x PGCIL 230 PGCIL PGCIL Processing of forest case very slow at state govt. level; Critical. Jun'15 Jun'15 Engineering, Civil works under progress. Dec'15 Dec'15 RoW being faced Dec'15 Dec 15 Award placed in May 14. Foundation commenced from Sept 14. Dec'15 Dec 15 Award placed in Aug,13. Engineering & Civil works under progress Dec'15 Dec 15 Award placed in Aug,13. Engineering & Civil works under progress Minutes of the 25 th Meeting of TCC of SRPC held on 19 th December of 68

18 Extn. of 765/ 400 kv Dharamjaigarh SS Srikakulam P P- Vemagiri- II Pooling station 765 kv D/C line PGCIL M/s Vizag Transmission Limited (A subsidiary of PGCIL) Dec'15 Dec 15 Award placed in Aug,13. Engineering & Civil works under progress July 16 Under implementation Srikakulam Pooling Station 765/ 400 kv, 2x1500 MVA PS (400 kv - AIS & 765 kv GIS) Srikakulam Pooling Station Garividi 400 kv (Quad) D/C line with 80 MVAR switchable line reactor at Garividi end. 400/220 kv S/S at Maradam (Garividi) PGCIL 2x1500 Jun'15 Jun'15 PGCIL APTRANSCO Engineering, Civil works & supply under progress. The line has been approved as ISTS scheme for implementation in SCPSPSR-37. Tenders will be called for shortly Behrampur- Gazuwaka 400 kv D/C line Talcher II Behrampur 400 kv D/C line Talcher II- Rourkela 400 kv D/C Quad line M/s Talcher Transmission Company Limited (Subsidiary of M/s Reliance Power Transmission Company Limited) CERC ROP (for ) enclosed CEA letter : No physical progress visible on ground. The scheme needed to be implemented without any further delay Behrampur 400/220 kv, 2x315 MVA S/S 2x315 Deliberation in the Meeting: APTRANSCO stated that 400 kv Srikakulam Garividi line needs to be expedited CTU informed that this line is under TBCB route and APTRANSCO could recommend it to be executed by PGCIL, if so desired Regarding Talcher-II back up scheme, it was noted that a Petition in this regard was being heard by Hon ble CERC. Minutes of the 25 th Meeting of TCC of SRPC held on 19 th December of 68

19 3.3.5 Warora Pool Warangal 765 kv D/C line Transmission Element Warora Pool Warangal 765 kv D/C line Warangal (New) Hyderabad 765 kv D/C line Warangal (New) Warangal (existing) 400 kv (quad) D/C line. Warangal (New) Chilakaluripeta 765 kv D/C line Implementing Agency Line length (ckm)/ MVA Capacity Sch. COD Ant COD/ Act COD Constraints/ Remarks This line has been approved as additional interregional link for importing power into Southern Region, and recommended for implementation in Southern Region s Standing Committee on Power System Planning in its 37 th meeting held on Warora 765/400 kv, 2x1500 MVA S/S PGCIL 2x1500 Warangal (New) 765/400 kv, 2x1500 MVA S/S PGCIL 2x1500 Deliberation in the Meeting: CTU informed that the scheme was discussed in the Empowered Committee and is coming through TBCB route. 3.4 Status of upcoming links having impact on S1-S Following is the updated status of the links having impact on S1-S2 ATC: Sl. No. Transmission Element Schedule Remarks 1 400/230 kv Thiruvalam S/S and associated LILOs ICT-1 by ICT-2 by Both the ICTs and LILOs completed by October Minutes of the 25 th Meeting of TCC of SRPC held on 19 th December of 68

20 kv Thiruvalam - Melakottaiyur 400 kv Somanahalli- New Salem June kv Pugalur- Kalavindapattu 765 kv Kurnool-Thiruvalam 400 kv Mettur- Singarapet- Thiruvalam Jan LILO of Kolar- Sriperumbudur at Thiruvalam 400 kv Mysore-Kozhikode May kv Mangalore (UPCL ) -Kasargode- Kozhikode Commissioned on Approval for enhanced compensation is awaited from CC,PGCIL Both ckts commissioned Commissioned Commissioned in March 2014 Held up due to ROW issue. Approved by Standing Committee & SRPC. KPTCL stated that they had furnished load flow studies and their comments keeping in view of 2000 MW HVDC link at Madakathara and hence the necessity of the line to be reexamined. KSEB, CTU & SRLDC stated that the line was absolutely essential It had been noted that CTU had not been specifying the ATC of S1 S2 corridor. CTU/POSOCO were to appraise the forum of the schedule of release of ATC. TANTRANSCO vide letter dated 29 th November 2014 (refer Annexure-II) had stated that the present status of erection work of lines to relieve S1-S2 corridor congestion may please be discussed. In addition, Karnataka had to cater their Yerandahalli load of 80 MW from Somanahalli itself. It had also been stated that though SPS on 400 kv Hosur-Salem D/C line had been provided by Tamil Nadu, the ATC had not been increased. Further, due to drawal of KSEB, the flow on 400 kv Kolar-Hosur D/C line was always maintained high. Deliberation in the Meeting: Director (T), KPTCL stated that with regard to proposed UPCL-Kozhikode line, they had furnished their comments, keeping in view the planned 2,000 MW HVDC Minutes of the 25 th Meeting of TCC of SRPC held on 19 th December of 68

21 terminal at Madakathara. He opined that the scheme needed to be justified technically before looking into any commercial issue ED, SRLDC said that the UPCL-Kozhikode line was necessary from the reliability point of view. Under PoC regime, transmission charges would be borne by the concerned utility using the system. CTU stated that the scheme had been planned keeping in view comprehensive perspective LGB scenario. PGCIL also observed that presently there was no N-1 reliability for the UPCL plant. This link would thus improve reliability under N-1 contingency. They also informed that a site survey had been carried out recently with the participation of CEA. MS, SRPC noted that the scheme had been agreed in the Standing Committee and also by SRPC CE (Tr.), KSEB observed that all concerned issues had been studied and subsequently only the scheme had been approved. The line was absolutely necessary for connectivity to North Kerala. Two more units were also likely to come up in the UPCL complex; hence the requirement of the line is more justified Regarding Thiruvalam-Mettur line, MD, TANTRANSCO informed that the line was held up at 14 towers due to NGT clearances. They were hopeful of getting the line through by January RoW of 400 kv Mysore-Kozhikode D/C line In the 25 th Meeting of SRPC the following had been noted: KSEB had stated that the completion of 400 kv Mysore-Kozhikode (Areakode) D/C line is urgently required since Northern Kerala was facing acute power shortage. Due to forest clearance and RoW disputes, the line work was held up in Karnataka. 400 kv line works in Kerala and construction of 400 kv substation at Areakode had been completed and kept idle for want of this line. KPTCL had informed that Karnataka State Government had constituted an Expert Committee to examine alternative possibilities for this line. The Committee had almost finalized the Report which was expected to be submitted shortly In the 101 st OCC Meeting on 11 th November 2014, SR-II, PGCIL had informed that the works on this line had resumed. The status may please be appraised by POWERGRID. Petition No. 120/MP/2014 was heard by Hon ble CERC on 13 th November The Commission had reserved order in the petition. Deliberation in the Meeting: ED, SR-II, PGCIL informed that they had resumed work with support of State Govt. In case conducive environment persisted, they would complete this line by June Minutes of the 25 th Meeting of TCC of SRPC held on 19 th December of 68

22 KSEB stated that the line was extremely critical for North Kerala. They suggested that PGCIL may deploy multiple agencies to expedite the works Director (T), KPTCL assured that they would continue to support PGCIL for completion of works on this line. 3.5 Other upcoming Intra-regional transmission elements Updated status of other critical upcoming lines is given below: Sl. No. Transmission Element Schedule Remarks kv Salem- Madhugiri December 2015 Severe RoW problem near Madhugiri kV Krishnapattanam- Chittoor March 2015 APTRANSCO was requested to expedite commissioning to avoid evacuation constraints. SRLDC stated evacuation should be restricted to 800 MW kV Almathy-Thiruvalam D/C line Jan.2015 ROW issues at 17 locations kv Edamon-Kochi Held up due to RoW issue. KSEB informed that GO for compensation is awaited. KSEB was requested to settle the compensation issues within one month to enable PGCIL to initiate works Regarding Krishnapattanam - Chittoor, APTRANSCO informed that they would commission the planned evacuation system by March ED, SRLDC stated that during the interim period, evacuation had to be restricted to 800 MW from Krishnapattanam JV kv Edamon-Kochi line In the 25 th Meeting of SRPC, the following had been noted: POWERGRID had filed a petition before Hon ble CERC seeking provisional tariff on the expenditure incurred on construction of Edamon -Cochin 400 kv D/C (Quad) line till and adjudication of dispute between the petitioner and Govt. of Kerala with regard to the compensation determined by the latter in terms of Section 67 (4) of the Electricity Act. Hon ble CERC had issued RoP in respect of Petition No. MP/083/2014 (date of hearing 17 th June 2014) wherein the following was stated: Minutes of the 25 th Meeting of TCC of SRPC held on 19 th December of 68

23 (d) Under the circumstances, the petitioner finds no way to complete the Projects and seeks recovery of expenditure already incurred in a suitable manner. KSEB had informed that it had been decided that additional compensation of about Rs. 341 Crores would be borne by the Government of Kerala. They were in discussion with PGCIL to work out the schedule and works were likely to commence by mid August In the 101 st OCCM, KSEB had informed that they are extending all support for the early completion of Tirunelveli- Kochi line in Edamon Kochi portion. KSEB had already taken up the task of liaisoning and a senior Executive Engineer has been assigned the dedicated task Petition No. MP/083/2014 was heard by Hon ble CERC on 13 th November The Commission had reserved order in the Petition. Deliberation in the Meeting: ED, SR-II, PGCIL expressed concern that despite several Meetings, assurance on compensation issues being settled by Kerala Govt etc. there had virtually been no progress at ground level. Around one and half year ago, PGCIL had stated that they were ready to abandon this line and that KSEB could take over and execute the pending works KSEB informed that the G.O. of Kerala Govt. on enhanced compensation was awaited and the same was expected within a month. KSEB assured that RoW issues would be settled enabling PGCIL to take up the works KSEB was again requested to settle the compensation issues within one month in the interest of speedy completion of pending works kv Trichur-Kozhikode line (Madakkathara- Areakode) The following had been noted till 25 th Meeting of SRPC: KSEB had stated that this line had already been approved as Regional System Strengthening Scheme. North Kerala would benefit since 400 kv supply could be availed either from Udumalpet or from Mysore for all the 400 kv substations in Kerala. Multi circuit & multi-level circuit was their requirement for surrender of corridor. PGCIL had sought utilization of existing 220 kv Madakkathara- Malaparamba-Areakode S/C feeder. There was no possibility of surrender of RoW of KSEB line presently since energy security of Malabar region was involved. Line works could be taken up only after commissioning of the 400 kv Mysore-Kozhikode line. PGCIL had been requested to initiate the process so that construction could Minutes of the 25 th Meeting of TCC of SRPC held on 19 th December of 68

24 commence immediately after 400 kv Mysore-Kozhikode line was commissioned. 3.6 Transmission Constraints Requiring Attention Following constraints had been noted in various fora: Overloading of Hiriyur- Nelamangala D/C & Jindal BTPS S/C Line Till parallel lines are developed KPTCL to restrict upstream generation and downstream load. Prioritizing and expediting commissioning of the transmission system planned for Yermarus TPS. Early Commissioning of 220 kv Hiriyur Gowribidanur D/C line under construction by KPTCL would help in relieving this line to some extent. In the Meeting the KPTCL informed the following: Out of 120 Km of 220 kv Hiriyur Gowribidanur line, 118 Km had been completed and test charged from the other end. Out of 436 locations 434 locations foundation have been completed while 429 towers had been completed. The completion was being followed up and the line is expected in January JWSEL is executing 400 kv S/S at Bellary which would be handed over to KPTCL. Tenders finalized for 400 kv Bellary Madhugiri line (200 Km). Schedule for completion is 24 months with incentive clauses for early commissioning. For 400 kv Bellary Yeramarus line, tenders would be shortly floated 400 kv Chikanayakanahally Bellary (JSWEL) would be taken up once the land acquisition for Chikanayakanahally S/S is finalized Hinduja Evacuation Till the ATS is developed total injection at Vemagiri to be restricted to 600 MW. In the Meeting APTRANSCO informed that the evacuation scheme was expected in about 8 Months. They assured that injection from the Vemagiri complex would be restricted to 600 MW till evacuation system is in place. Minutes of the 25 th Meeting of TCC of SRPC held on 19 th December of 68

25 Overloading of 230 kv and below system in TN during high wind season also leading to low voltages Identified evacuation lines to be developed by TANTRANSCO to be prioritized and expedited. Provision of Under Voltage Relays (UVR) to be ensured. In the Meeting TANTRANSCO informed that Kanarpatty S/S would be commissioned by next year, while Kayathar S/S had been commissioned. The situation had eased to some extent with the commissioning of Kayathar S/S. Besides substantial wind presence, 2,000 MW of solar project were also coming up in the state. Hence, as a comprehensive measure, network strengthening at 400 kv and 230 kv was planned. Under kfw scheme, various 400 kv and 230 kv network strengthening schemes were under execution. 15 number of capacitor bank had also been planned to be installed shortly to address under voltage issue. SRLDC pointed out that since wind generation had come down the situation had presently eased. With wind generation picking up from May 2015 onwards, there could be evacuation constraints coupled with low voltages. It was also suggested that TN may kindly furnish full details of the schemes along with schedule of commissioning dates. TANTRANSCO agreed to furnish the same. Once S1-S2 lines are in place the loading on 400 kv Salem Udumalpet would be a concern 400 kv Mettur Thiruvalam line to be expedited In the Meeting, TANTRANSCO informed that Mettur- Thiruvalam line would be commissioned by January Overloading of Khammam Nagarjuna Sagar S/C line 400 kv D/C line between Khammam and Nagarjuna Sagar to be expedited. In the Meeting, TSTRANSCO stated that presently there was no overloading of Khammam- Nagarjunasagar S/C line. SRLDC clarified that this was a future anticipated constraint. Minutes of the 25 th Meeting of TCC of SRPC held on 19 th December of 68

26 PGCIL informed that 400 kv Khammam - Nagarjunasagar line (under TBCB) would come up in the first quarter of Overloading of 400/220kV 500 MVA ICTs at Somanahalli 2 Nos.& Radialization of Lines Redistribution/ reconfiguration of 220 kv transmission lines around these substations is required. In the Meeting, KPTCL informed that comprehensive plan for Bengaluru (7,500 MW) has been envisaged and had been approved by the Board. Presently the load met was about 2,700 MW out of 5,600 MVA capacity. About Rs.1,100 Crore had been earmarked for the strengthening works. Tender had been finalized for strengthening Somanahalli - Peenya section and they were planning to complete it within one year. Overloading of 400/220kV 315MVA ICTs at Mysore 2Nos. Strengthening at 220 kv level around Mysore is required. This needs to be planned by KPTCL. 500 MVA ICT expected by 2017 (award placed in September 2014). In the Meeting, PGCIL was requested to expedite the commissioning. PGCIL agreed to prioritize and expedite the commissioning of the ICT. Overloading of 400/220kV 315MVA ICTs at Kalvindapattu 2 Nos Commissioning of newly planned substations at Thiruvalam and Sholinganallur would help 500 MVA ICT expected by ( award placed in September 2014) In the Meeting, PGCIL was requested to expedite the commissioning. PGCIL agreed to prioritize and expedite the commissioning. Overloading of 400/220kV 315MVA ICTs at Trichur 2Nos and Palakkad 2Nos Loading of ICTs at Trichur would ease after Mysore-Kozhikode 400 kv line. 3 rd ICT at Trichur (315 MVA) was commissioned on 31 st October Minutes of the 25 th Meeting of TCC of SRPC held on 19 th December of 68

27 In the Meeting, it was noted that the situation may get mitigated after commissioning of 400 kv Mysore-Kozhikode lines. In the meanwhile KSEB was suggested to take steps to avoid any overloading of the ICTs at Trichur and Palakkad. 400 kv Udumalpet Palakkad D/C lines are heavily loaded during high drawal by KSEB This could limit the drawal by Kerala in future. In the Meeting, it was noted that Udumalpet - Palakkad lines were violating N-1 criteria in certain occasions. KSEB was requested to take steps to avoid overloading of Udumalpet - Palakkad D/C line. There should be no overdrawal during N-1 violation. 400/220 kv 315 MVA ICTS at Gazuwaka are overloaded In the Meeting, PGCIL suggested that the 315MVA ICTs be replaced with 500 MVA ICTs on account of space constraints. The 315 MVA ICTs could be utilised as regional spare. TCC recommended for up-gradation of 2*315 MVA ICTs to 2*500 MVA along with associated bay equipment. Two 315 MVA ICTs would be utilised as regional spare. Loading on 220 kv Kadakola Kaniampetta lines In the 101 st OCCM (held on ) KPTCL had informed that there had been loss of elephant life due to electrocution close to this corridor. Keeping the various issues in mind, the loading was needed to be restricted to 120 MW on this line. KSEB categorically stated that any further reduction in the power flow through this line would result in perpetual load shedding in Northern Kerala and cannot be agreed upon. Special maintenance for the line had already been discussed in earlier SRPC Meetings. It was agreed that loading upto 150 MW would continue and the issue would be put up to TCC. In the Meeting, KPTCL informed that they had assessed the requirement for intermediate towers at critical locations and tenders would be called shortly. KPTCL would share the corridor details with KSEB.. Minutes of the 25 th Meeting of TCC of SRPC held on 19 th December of 68