1 / 76

POWER GRID CORPORATION OF INDIA LTD

POWER GRID CORPORATION OF INDIA LTD. GRID EVENTS AND ISSUES. in 139 TH SREB MEETING 19 TH DECEMBER 2005 HYDERABAD. SOUTHERN REGIONAL LOAD DESPATCH CENTRE. ISSUES. 7.1.1 400 KV KAIGA – GUTTUR 7.2.1 400 KV MADURAI – TRIVENDRUM D/C LINE 8.0 TALCHER – KOLAR HVDC

temima
Download Presentation

POWER GRID CORPORATION OF INDIA LTD

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. POWER GRID CORPORATION OF INDIA LTD GRID EVENTS AND ISSUES in 139TH SREB MEETING 19TH DECEMBER 2005 HYDERABAD SOUTHERN REGIONAL LOAD DESPATCH CENTRE

  2. ISSUES • 7.1.1 400 KVKAIGA – GUTTUR • 7.2.1400 KV MADURAI – TRIVENDRUM D/C LINE • 8.0 TALCHER – KOLAR HVDC • 9.1 400 KV KAIGA – NARENDRA D/C LINE • 10.0 EVACUATION SCHEMES FOR NEW CENTRAL SECTOR GENERATING STATIONS • 11.1 UNREQUISITIONED POWER OF NTPC STATIONS • 12.2 KALPAKKAM – EVACUATION SCHEME

  3. ISSUES (Continued …) • 13.1 TALCHER – KOLAR INTERTRIP SCHEME • 14.1ALTERNATE PATH FOR EVACUATION OF TALCHER STAGE 2 POWER • 15.1INTER REGIONAL TRANSMISSION LINKS BETWEEN ER/WR AND SR • 16.1.i HIGH VOLTAGE CONDITIONS • 16.1.ii KAIGA – GUTTUR TRIPPING DETAILS • 16.1.iii HIGH FREQUENCY CONDITIONS • 16.1.iv STOA – CHIKKODI – KOLHAPUR LINE

  4. ISSUES (Continued …) • 5 FREQUENCY LINKED PENALTY/INCENTIVE SCHEME FOR OVER/UNDER DRAWALS OF SHARES • 8 REGIONAL POWER COMMITTEE

  5. SCHEDULE DRAWAL GRAPHS • INTER REGIONAL EXCHANGES • SUMMARY OF UI

  6. THANK YOU

  7. 400 KV KAIGA – GUTTUR • TRIPPING DETAILS • DIFFERENT OPTIONS • DURING TRIPPING TYPICAL FLOWS • ALTERNATIVE 1 • ALTERNATIVE 2 • ALTERNATIVE 3 • RADIALISATION OF CHIKODI, BELGAUM AND NARENDRA LOAD • LOAD FLOW STUDY RESULTS FOR PROVIDING AUTOMATIC INTER-TRIP SCHEMES AT KAIGA

  8. KOLHAPUR (MSEB) ALL FIGURES IN MW PONDA CHIKKODI 44 44 BELGAUM 57 90 90 AMBEWADI NADENDRA 57 101 101 28(-21) MAHALINGPURA (-21)28 HUBLI 101 NAGJHERI KARWAR 500 GADAG 25 387(475) 63 (97)52 1 52(97) 163 SHARAVATHI LINGAPUR (41)11 KODASALLI 150 130 TALAGUPPA 400KV (76) 24 24(76) 48(-13) 220KV KADRA (OPEN) 307 (85) 115 GENERATORS GUTTUR 400 KAIGA 192(304) SUB-STATION PROPOSED ALTERNATIVES FOR AVERTING TRIPPING OF GENERATORS AT KAIGA & KALI COMLEX DURING TRIPPING OF 400KV KAIGA-GUTTUR FEEDER II TYPICAL MW FLOWS:- AROUND KAIGA AND KALI COMPLEX Note: The Figures in brackets shows the flows after tripping of 400KV Kaiga-Guttur ckt II

  9. KOLHAPUR (MSEB) ALL FIGURES IN MW PONDA CHIKKODI 44 44 BELGAUM OPEN 90 90 AMBEWADI NADENDRA OPEN 47 47 OPEN MAHALINGPURA OPEN HUBLI 105 NAGJHERI KARWAR 500 GADAG 37 395(520) 43 2 2 11 181 KODASALLI SHARAVATHI LINGAPUR 22 150 TALAGUPPA 130 400KV 109 109 115(24) 220KV KADRA 249 (0) (103)148 GENERATORS GUTTUR 400 KAIGA 179(293) SUB-STATION ALTERNATIVE – I TYPICAL FLOWS :- AFTER RADIALISATION OF CHIKODI, BELGAUM & NARENDRA Note: The Figures in brackets shows the flows after tripping of 400KV Kaiga-Guttur Feeder – II.

  10. SECTION - 1 SECTION - 2 NARENDRA 400KV BUS KAIGA 400KV BUS - 2 KAIGA 400KV BUS - 1 60 GUTTUR 400KV BUS 60 KAIGA 220KV BUS 2 KAIGA 220KV 245 BUS 1 20 155 100 400 GUTTUR 220KV BUS KADRA KODASALLY ~ 400KV KAIGA 2 x 220 MW 220KV ~ GENERATOR ICT ALL FIGURES IN MW ALTERNATIVE – 2 TYPICAL FLOWS :- SPLIT BUS OPERATION AT KAIGA Continue …

  11. KOLHAPUR (MSEB) ALL FIGURES IN MW PONDA CHIKKODI 43 43 BELGAUM 52 88 88 AMBEWADI NADENDRA 52 98 98 6 MAHALINGPURA 6 HUBLI 103 NAGJHERI KARWAR 500 GADAG 38 430 15 70 70 16 191 KODASALLI SHARAVATHI LINGAPUR 24 150 130 TALAGUPPA 400KV 60 20 60 220KV KADRA 100 245 GENERATORS GUTTUR 400 KAIGA 155 SUB-STATION ALTERNATIVE – 2 (Continued …) TYPICAL FLOWS :- SPLIT BUS OPERATION AT KAIGA

  12. KOLHAPUR (MSEB) ALL FIGURES IN MW PONDA CHIKKODI 44 44 BELGAUM 54(64) 90 90 AMBEWADI NADENDRA 54(64) (112)101 101(112) 21(10) MAHALINGPURA (10)21 HUBLI 113 NAGJHERI KARWAR 500 GADAG 60 475(521) 15 (131)97 34 97(131) 217 SHARAVATHI LINGAPUR (125)41 KODASALLI 150 130 TALAGUPPA 400KV (54)76 76(54) 13(OPEN) 220KV KADRA OPEN(OPEN) (OPEN) 85 GENERATORS GUTTUR 400 KAIGA 304(275) SUB-STATION ALTERNATIVE – 3 TYPICAL FLOWS :- AFTER TRIPPING OF 400KV KAIGA-GUTTUR CIRCUIT II Note: The Figures in brackets shows the flows after tripping of 220kV Kaiga-Kaidra & Kaiga-Kodasalli.

  13. NLMNG CHITOOR KOLAR HOODY ALMATHI HASSAN SP-BUDUR S’HALLI HOSUR MELKOTTAIYUR MYSORE BAHOOR KOZHIKODE SALEM NEYVELI NLY-EXP ARASUR JAYAMKONDAM PUGALUR THRISSUR UDUMALPET TRICHY KARAIKUDI COCHIN MADURAI MULTI-CIRCUIT TOWER ON 220 KV EDAMON-KAYATHAR CORRIDOR 400 KV MAURAI – TRIVENDRUM D/C LINE TRIVANDRUM

  14. ADVANTAGES OF MADURAI-TRIVANDRUM LINE • ALTERNATE SUPPLY PATH TO TRIVANDRUM AREA • INCREASED STABILITY OF S.KERALA SYSTEM • DECREASED LOSSES • IMPROVED TRANSFER MARGIN – FACILITATING BETTER MERIT ORDER OPERATION AND ECONOMY Cont..

  15. THE ISSUES OF CONCERN • HIGH VOLTAGE AT TRIVANDRUM • TRIPPING OF ICT ON V/F AT NIGHT • RISK OF TRIPPING OF LINE • CONTINUED HIGH LOADING ON 220 KV EDAMON-KAYATHAR PREVENTING FURTHER DECREASE IN GENERATION IN KSEB SYSTEM Cont..

  16. ADVANTAGES OF COMMISSIONING 400 KV KAIGA NARENDRA D/C LINE KOLHAPUR (MAHARASHTRA) CHIKKODI KARNATAKA M.L.PURA BELGAUM MAPUSA NARENDRA 220 PONDA (Goa) AMBEWADI HUBLI XELDEM(GOA) KODASALLI KADRA NAGJHARI GUTTUR KAIGA Next NOT TO SCALE DISTANCES EXAGERATED FOR CONVENIENCE

  17. ADVANTAGES OF COMMISSIONING 400 KV KAIGA-NARENDRA D/C LINE • PROVIDES ALTERNATE PATH FOR EVACUATION OF KAIGA GENERATION IN CASE OF CONTINGENCY • LINE IS ON DIFFERENT ROUTE FROM THAT OF KAIGA-GUTTUR • ENHANCED REDUNDANCY AND RELIABILITY

  18. In HZ SEP-05 OCT-05 OCT-04 0 10 20 30 40 50 60 70 80 90 100 Continue …

  19. In HZ OCT-05 NOV-05 NOV-04 0 10 20 30 40 50 60 70 80 90 100 Continue …

  20. To Arrest High Frequency: • Reservoir based hydro backing/closing • Liquid Fuel Stations backing/closing down • IR export • Thermal Stations backing down/Closing down • Hydro backing down – even on overflowing stations Continue …

  21. To Arrest High Frequency: (Con .. ) • With frequency > 50.5 Hz • back down even at overflowing hydro stations • No sudden injection in the grid at freq > 50.2 Hz. Continue …

  22. KADAMPARAI GENERATION/PUMP ENERGY FROM JAN - 2003 Details

  23. STEPS TAKEN TO CONTAIN OVER VOLTAGE • TRANSFORMER TAP CHANGES • MANY ICT TAPS WERE CHANGED ON 400/220 ICT’s • GT TAP CHANGES • GENERATORS ON SYNCH CONDENSOR MODE • NETWORK MANIPULATION • UPTO 40 LINES KEPT OUT TO CONTROL HV DURING LEAN SEASON • EVEN DURING PEAK, SRISAILAM LINES ARE KEPT OPEN TO CONTROL HIGH VOLTAGE • TAKING OUT THE LINE AND CONVERTING LINE REACTOR TO BUS REACTOR • UTILISATION OF HYBRID AC/DC NETWORK DIVERSION OF TALCHER STAGE 2 POWER THROUGH GAJUWAKA

  24. STATUS OF 400 KV LINES OF SR AS ON DATE 02-NOV-05 TALCHER ORISSA BHADRAVATI JEYPORE MAHARASHTRA AP SIMHADRI NTPC RSTPP KALPAKKA P KHAMMAM GAZUWAKA (POWERGRID) MMDP HYDERABAD P P P MAHABOOB NAGAR P VIJAYAWADA N’SAGAR NARENDRA RAICHUR P KAR KURNOOL MUNIRABAD SSLMM P KAIGA SIRSI GOOTY P N CUDDAPAH P 1000 MW HVDC BACK TO BACK LINK GUTTUR NELLORE HIRIYUR TALGUPPA 2000 MW HVDC BIPOLE NELAMANGALA BANGALORE MADRAS P P KOLAR HOODY HOSUR 500 KV HVDC LINE 400 KV LINE POWERGRID SALEM NEYVELI 400 KV LINE APTRANSCO TN NEYVELI TPS – 1 (EXP) EXP 400 KV LINE KPTCL UDUMALPET P TRICHY TRICHUR P 400 KV LINE OPERATED AT 220 KV MADURAI THERMAL GENERATING STATION KER List 400KV SUB-STATION THIRUVANANTHAPURAM

  25. SYNCHRONOUS CONDENSOR OPERATION: IN OPERATION Cont..

  26. LIST OF GENERATORS WITH PELTON TURBINE Cont..

  27. 3 QUADRANT OPERATION MW MVAR Cont..

  28. MW MVAR Cont..

  29. GENERATORS ON SYNCH CONDENSOR MODE: ADVANTAGES • IMPROVED SHORT CIRCUIT LEVELS • CAN BE CONVERTED TO GENERATOR MODE IN SHORT NOTICE • EXCELLENT REACTIVE SOURCE • REDUCED LOSSES • CONTROL VOLTAGE FLUCTUATIONS

  30. UNREQUISITIONED POWER OF NTPC STATIONS • RSTPS UNIT 7 • SEP 05 1.12 MU ( 05 Transactions) • OCT 05 7.65 MU (15 Transactions) • NOV 05 4.37 MU (11 Transactions) • TALCHER STAGE 2 • NOV 05 6.06 MU (08 Transactions) DETAILS DETAILS Cont..

  31. Cont..

  32. EVACUATION SCHEMES FOR NEW CENTRAL SECTOR GENERATING STATIONS • KOODANKULAM APP • NEYVELI TS-II EXPANSION • KAIGA STAGE -II

  33. KUDANKULAM TRANSMISSION SYSTEM( 2000MW) LINES : 601+ 350 = 950 Km. ESTIMATED COST = 1710 CRORES • KUDANKULAM-TIRUNELVELI 2 X 400 KV D/C LINES WITH QUAD (108 & 83 Km.) KARNATAKA • TIRUNELVELI-UDUMALPET D/C LINE WITH TWIN MOOSE (300Km) T N KERALA • LILO OF BOTH CIRCUITS OF MADURAI-TRIVANDRUM LINE AT TIRUNELVELI ( 2 X 55 Km) • EDAMON-MUVATTUPUZHA D/C LINE QUAD (150Km) • TIRUNELVELI-EDAMON 400KV D/C LINE (110Km). • MUVATTUPUZHA-TRICHUR 400KV D/C LINE WITH QUAD CONDUCTORS (90Km) Contd..

  34. KUDANKULAM TRANSMISSION SYSTEM( 2000MW) SUB-STATIONS • NEW 400/220KV SUBSTATIONS AT TIRUNELVELI, MUVATTUPUZHA • AUGMENTATION OF TRANSFORMATION CAPACITY BY ONE TRANSFORMER EACH AT UDUMALPET & TRIVANDRUM S/S SUPPLEMENTARY TRANSMISSION SYSTEM • LILO OF ONE CIRCUIT OF 400KV MADURAI-TRICHY • AT KARAIKUDI ( 60 Km) ALONG WITH SUBSTATION AT • KARAIKUDI (TAMILNADU) • LILO OF ONE CIRCUIT OF TALAGUPPA-NELAMANGALA • 400KV LINE AT HASSAN ( 80 KM) ALONG WITH SUBSTATION AT • HASSAN.(KARNATAKA)

  35. KAIGA 3 & 4 TRANSMISSION SYSTEM COST ESTIMATE : 512 CRORES LINES : 413 Kms • MYSORE-KOZHIKODE D/C LINE • LILO OF KOLAR-SRIPERUMBADUR AT MELAKOTTAIYUR (40KM) • NARENDRA-DAVANGERE D/C LINE SUB-STATION : 2 Nos. New K E R A L A • NEW 400/220KV SUBSTATION AT KOZHIKODE & MELAKOTTAIYUR • 2ND 315MVA TRANSFORMER AT HIRIYUR S/S. • BAY EXTENSION AT NARENDRA, DAVANGERE (KPTCL) & • HIRIYUR.

  36. NLC-TS-II EXPANSION TRANSMISSION SYSTEM COST ESTIMATE : 721 CRORES LINES : 467 Km. • 2 NOS. 400KV S/C LINES FROM NEYVELI-TS-II (EXISTING) TO NLC TS-II (EXPAN) (8 KM). KARNATAKA • NEYVELI-PUGALUR D/C LINE T N • PUGALUR-MADURAI D/C LINE K E R A L A • UDUMALPET-ARASUR D/C LINE • LILO OF NEYVELI-SRIPERUMBU- DUR LINE AT PONDY. SUB-STATION • NEW 400/220KV SUBSTATIONS AT PUGALUR, ARASUR & PONDICHERRY.

  37. INTER-REGIONAL EXCHANGES DETAILS UPTO 151 WKS (Till 20.11.05) *from 06.09.04 (when ER exchanges computed @ respective frequencies)

  38. UI IN SR (FROM 01/01/03 TO 04/12/05) • TOTAL UI TURNOVER :- 10141 MU • TOTAL UI AMOUNT DISBURSED:- 1933 CR • AVG WEEKLY TRANSACTION:- 66 MU • AVG WEEKLY UI AMOUNT DISBURSED:- 13 CR Contd..

  39. SUMMARY OF UI – 153WKS(FROM 01/JAN/03 TO 04/DEC/05) Contd..

  40. IMPLEMENTED SCHEME TO ENSURE GRID STABILITY • BOTH POLES WERE HEALTHY AND ONE POLE GOES OUT • INSTANT TRIPPING OF UNIT #6, (ONE OF THE FOUR STAGE-II UNITS) IF EX BUS GENERATION IS MORE THAN 1700MW • BOTH POLES WERE HEALTHY AND BOTH POLES GO OUT • IF EX BUS GENERATION IS MORE THAN 1100 MW • UNITS #5 & #6 TRIPPED INSTANTANEOUSLY • UNIT #4 TRIPPED AFTER 250 m sec • IF EX BUS GENERATION IS MORE THAN 550 MW • UNIT # 5 TRIPPED INSTANTANEOUSLY • UNIT # 4 TRIPPED AFTER 250 m sec • UNIT # 6 TRIPPED AFTER 500 m sec NOTE: STAGGERED TRIPPING IS ADOPTED TO ALLOW THE POWER SUMMATED SIGNAL RESETTING Continue ……

More Related