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POWER GRID CORPORATION OF INDIA LIMITED BANGALORE

POWER GRID CORPORATION OF INDIA LIMITED BANGALORE. NATIONAL GRID AND IMPROVEMENTS IN SOUTHERN GRID. By K.SATYAM EXECUTIVE DIRECTOR POWERGRID. POWERGRID – An Overview. STARTED COMMERCIAL OPERATION IN 92-93 WHEELS MORE THAN 40% OF THE POWER GENERATED IN THE COUNTRY OPERATES & MAINTAINS

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POWER GRID CORPORATION OF INDIA LIMITED BANGALORE

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  1. POWER GRID CORPORATION OF INDIA LIMITED BANGALORE

  2. NATIONAL GRID AND IMPROVEMENTS IN SOUTHERN GRID.ByK.SATYAMEXECUTIVE DIRECTORPOWERGRID

  3. POWERGRID – An Overview • STARTED COMMERCIAL OPERATION IN 92-93 • WHEELS MORE THAN 40% OF THE POWER GENERATED IN THE COUNTRY • OPERATES & MAINTAINS • 50,000 CKMS. OF EHV TR. SYSTEM • 82 SUB-STATIONS • OVER 99% SYSTEM AVAILABILITY. • CONSISTENTLY PROFIT MAKING SINCE INCEPTION • PROFIT LAST YEAR WAS RS. 748 CRS.

  4. INDIAN POWER SYSTEM • GROWTH IN INSTALLED CAPACITY • PRE-INDEPENDENCE 1362 MW • YEAR 2004 1,12,000 MW • THERMAL 79,000 MW • NUCLEAR 2720 MW • HYDRO 30,000 MW • YEAR 2012 (PROJECTED) 2,10,000 MW

  5. Indian Power System: BY 2012 • PROJECTED INSTALLED CAPACITY - 210,000 MW • CAPACITY ADDITION ENVISAGEDBY MoP • THERMAL • IN 10TH PLAN (2006-07) - 40,000 MW • IN 11TH PLAN (2011-12) - 60,000 MW • HYDRO • IN 10TH AND 11TH PLAN - 50,000 MW (APPROX. 10000 MW CAPACITY ADDITION PER YEAR) • MAJOR RESOURCES FOR CAPACITY ADDITION • HYDRO POTENTIAL IN J&K, HP & NER • COAL POTENTIAL IN BIHAR, ORISSA

  6. POWERGRIDPerspective Plan… • ADDITION OF 60,000 CKM OF TRANSMISSION NETWORK TO EVACUATE 1,50,000 MW BY 2011-12 • INVESTMENT OF RS. 71,000 CRORE • CREATION OF NATIONAL GRID • ENHANCING INTER-REGIONAL TRANSFER CAPACITY TO 30,000 MW BY 2012 • CONVERGENCE • DIVERSIFICATION INTO TELECOM • APDRP PROGRAMME • RURAL ELECTRIFICATION • SUB-TRANSMISSION AUGMENTATION

  7. TOWARDS A NATIONAL GRID

  8. NORTHERN REGION NORTH-EASTERN REGION EASTERN REGION WESTERNREGION SOUTHERN REGION

  9. ‘ELECTRICAL’ REGIONS 1 NORTHERN REGION NORTH-EASTERN REGION EASTERN REGION 2 WESTERNREGION 3 SOUTHERN REGION WITH COMMISSIONING OF TALA PROJECT INDIA WOULD HAVE ONLY TWO GRIDS!!! SOUTHERN GRID AND NORTHERN GRID SAME FREQUENCY FROM GUJARAT TO ARUNACHAL PRADESH WITH EFFECT FROM MARCH 2003 ABOUT 2800 KMS! APART

  10. TOWARDS A NATIONAL GRID • INVESTMENTS IN CENTRAL SECTOR TRANSMISSION PROJECTS ENVISAGED FOR 10th AND 11tH PLAN: 71,000 CRORES • INTER REGIONAL TRANSFER CAPACITY ENVISAGED BY 2012 : 30,000 MW OVER 12,000 MU OF POWER WAS TRANSMITTED THROUGH CENTRAL SECTOR LINES LAST YEAR THIS POWER IS WORTH 2400 CRORE RUPEES

  11. 68 72 76 88 92 96 80 84 INDIA GEO POLITICAL J&K POWER REGIONS HP PUNJAB HARIANA NER N BHUTAN NEPAL SKM DELHI NG NE ASSAM RAJASTHAN UP ME BIHAR MNP B’ DESH- E TRP MIZ MP MYANMAR JKND WB GUJARAT W L CTGR ORISSA MAHARASHTRA DIU DAMAN S GOA AP PONDICHERY KARNATAKA A&N TAMIL NADU LAKSHADWEEP SRI LANKA

  12. A NATIONAL GRIDTHE ADVANTAGES • STRONG BACKBONE ‘ANYWHERE TO ANYWHERE’ ’ TRADING • ECONOMIC OPERATION • HARNESS DIVERSITY • SAVING OF 13,000 MW BY YEAR 2012 • ADDED STABILITY • BOUNDARY-LESS OPERATION • HUB AND SPOKE ARRANGEMENT • GENERATORS HAVE READY EVACUATION PATH THE NATIONAL GRID ENVISAGED BY POWERGRID IS A HYBRID NETWORK COMPRISING A 765 Kv HUB WITH 400 KV AC AND 500KV HVDC SPOKES

  13. 765 KV RING MAIN SYSTEM THE POWER ‘HIGHWAY’

  14. THE POWER ‘HIGHWAY’ • CHEAP HYDRO POWER ENTERS THE ‘HIGHWAY’ FROM THE NORTH-EAST AND EXITS TO POWER STARVED REGIONS • CHEAP PIT HEAD POWER ENTERS THE ‘HIGHWAY’ FROM THE EAST AND EXITS TO POWER STARVED REGIONS • AN IPP/CPP CAN USE THE HIGHWAY TO TRANSFER /TRADE POWER • THE POSSIBILITIES ARE IMMENSE

  15. ENERGY RESOURCES • COAL – RESERVES OF 202 BILLION TONNE • EASTERN REGION 69% • WESTERN REGION 23% • SOUTHERN REGION 6% • LIGNITE RESERVES - 24.4 BILLION TONNE • SOUTHERN REGION 89% • NORTHERN REGION 6% • WESTERN REGION 4% • HYDRO RESERVES – 84000 MW – 60% LOAD FACTOR • NORTHERN REGION 37.5% • WESTERN REGION 5.2% • SOUTHERN REGION 10.3% • EASTERN REGION 7.1% • NORTH-EASTERN REGION 39.9%

  16. NATIONAL GRID PLAN • National Grid planned for execution in phases with an investment of Rs. 70,000 Crs by 2012. • 8500 MW existing capacity • 23000 MW planned by 2007 • 30,000 MW planned by 2012

  17. Plan for National Grid- Phase-1 • INTERCONNECTION OF REGIONAL GRIDS THROUGH HVDC BACK-TO-BACK LINKS • NORTH – WEST: 500MW VINDHYACHAL B2B LINK • WEST – SOUTH: 1000MW CHANDRAPUR B2B LINK • EAST – SOUTH: 500MW GAZUWAKA B2B LINK • EAST – NORTH: 500MW SASARAM B2B LINK • PHASE-I COMPLETED

  18. Plan for National Grid- Phase-2 PHASE-II (BY 2007): • HIGH CAPACITY “TRANSMISSION HIGHWAYS” ENVISAGED ALONG WITH MAJOR GENERATION PROJECTS • HYBRID HVAC AND HVDC INTERCONNECTION • INTER REGIONAL LINKS ALREADY CONSTRUCTED • KATHALGURI – MALDA 400KV D/C IN NER • 2000 MW HVDC BIPOLE BETWEEN TALCHER-KOLAR BET. ER & SR • 400KV AC LINK BETWEEN ROURKELA AND RAIPUR BET. ER & WR • IMPLEMENTATION ALREADY COMMENCED • HIGH CAPACITY 400 KV LINK FROM TALA TO DELHI BET. ER & NR • 2ND GAZUWAKA HVDC BACK-TO-BACK OF 500MW BET ER & SR • ABOUT 5000 CKT. KM OF 765 KV LINES PLANNED ALONGWITH UPCOMING MEGA PROJECTS IN ER • WITH THE COMPLETION OF PHASE-II, THE INTER-REGIONAL CAPACITY WOULD BE 23,000 MW

  19. INTER-REGIONAL TRANSFER BY END OF 10th PLAN (2007) NR 1055 MW 1700 MW AC 500 MW 500 MW DC DC AC AC NER 1000 MW 4050 MW ER WR AC AC DC AC MAJOR SYSTEM DC 300 MW 200 MW 1000 MW SYNCHRONOUS AC TIES 17800 MW HVDC CONNECTIONS 5000 MW SR 3000 MW

  20. NATIONAL GRID REGION WISE INTERCONNECTS AS ON DATE ROURKELA RAIPUR TALCHER KOLAR

  21. Plan for National Grid- Phase-3 PHASE-III (BY 2012) : • RING OF 765KV LINES INTER-CONNECTING NORTHERN, WESTERN AND EASTERN REGIONS • ER INTER-CONNECTION WITH SR TO BE STRENGTHENED THROUGH HVDC LINES (ASYNCHRONOUS LINK) • COMPLETION OF PHASE-III WOULD LEAD TO CUMULATIVE CAPACITY OF INTER-REGIONAL LINK TO 30,000 MW

  22. NR 13450 MW 4600 MW NER 1000 MW 6450 MW ER WR 1300 MW 3200 MW SR INTER-REGIONAL TRANSFER BY END OF 11th PLAN (2012)

  23. MERIT ORDER – IMPACT ON TRANSMISSION PLANNING • WITHIN THE REGION • SKEWED DRAWAL PATTERN • MERIT ORDER DISPATCH • HYDRO CONSERVATION • WITH OTHER REGIONS • COSTLIEST GENERATORS ARE IN SR • ER HAS THE PITHEAD- CHEAP-GENERATORS ABOUT 3900 MU OF ER POWER WAS SENT TO SR ON TALCHER-KOLAR LINE EVEN BEFORE TALCHER UNITS WERE SYNCHRONISED!!

  24. PROJECTS IN THE PIPELINE IN SOUTHERN REGION

  25. PROJECTS IN PROGRESS IN SOUTHERN REGION • 400 KV MADURAI-TRIVANDRUM LINE WITH 400 KV SS AT TRIVANDRUM • 400 KV NELAMANGALA-MYSORE LINE WITH 400 KV SUBSTATION AT MYSORE • 400 KV KAIGA-NARENDRA LINE ALONG WITH 400 KV SUB STATION AT NARENDRA • 400 KV HYDERABAD-KURNOOL-GOOTY LINE • 400 KV 2nd GOOTY-BANGALORE LINE • 400 KV RAICHUR-GOOTY D/C QUAD LINE • 400 KV RING MAIN AROUND BANGALORE • 400 KV RING MAIN AROUND CHENNAI

  26. PROJECTS IN SOUTHERN REGION • 400 KV RAMAGUNDAM – HYDERABAD-GOOTY-NELAMANGALA LINE: RS 390 CRORES • ADDITIONAL 500 MW HVDC POLE AT GAZUWAKA: WORTH Rs 770 CRORES • ENHANCEMENT OF CAPACITY OF TALCHER POLES BY 500MW (FROM 2000 MW TO 2500 MW FOR UTILISATION DURING EMERGENCY ONLY): Rs 90 CRORES • SYSTEM AUGMENTATION SCHEMES : Rs 415 CRORES • KOODANKULAM NUCLEAR PLANT EVACUATION SCHEME – 2000 MW CAPACITY- WORTH ABOUT Rs 1700 CRORES • ANOTHER HVDC LINK TO SR FROM ER/WR • SYSTEM EXPANSION SCHEMES WORTH Rs 1233 CRORES

  27. NEW PROJECTS ON THE ANVIL 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.

  28. NEW PROJECTS ON THE ANVIL 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)

  29. NEW PROJECTS ON THE ANVIL 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)

  30. NEW PROJECTS ON THE ANVIL 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.

  31. GRID OPERATION IN THE SOUTHERN REGION

  32. THE SOUTHERN REGION IN BRIEF

  33. INSTALLED CAPACITY OF SOUTHERN REGION IN MW NUCLEAR IPP WIND HYDRO GAS THERMAL 31,316 MW MICRO AND CAPTIVE CAPACITIES ARE NOT INCLUDED IN THE INSTALLED CAPACITY

  34. SOUTHERN REGION:QUICK FACTS INSTALLED CAPACITY:31,316 MW MAX DEMAND MET:21,928 MW MAX CONSUMPTION: 457 MU ANDHRAPRADESH KARNATAKA MAX DEMAND MET MAX DEMAND MET 7441 MW 5445 MW INSTALLED CAPACITY 9515 MW INSTALLED CAPACITY 5802 MW DAILY CONSUMPTION AVG DAILY CONSUMPTION AVG 130 MU 84 MU DAILY CONSUMPTION MAX DAILY CONSUMPTION MAX 166 MU 107 MU KERALA TAMILNADU MAX DEMAND MET MAX DEMAND MET 2426 MW 7228 MW INSTALLED CAPACITY INSTALLED CAPACITY 2610 MW 7037 MW DAILY CONSUMPTION AVG DAILY CONSUMPTION AVG 34 MU 126 MU DAILY CONSUMPTION MAX DAILY CONSUMPTION MAX 39 MU 147 MU

  35. GENERATING UNITS AND CAPACITY

  36. TALCHER BHADRAVATI JEYPORE 178x2 SIMHADRI NTPC 2x221 8x4 RSTPP 400 KV LINE PRESENTLY OPERATED AT 220 KV GAZUWAKA(AP) 1 301x2 189 15x2 P 187 195 VISAKHAPATNAM (POWERGRID) 267x2 KHAMMAM HYDERABAD 317 P P 115 197x2 P MMDP 155 P VIJAYAWADA 146x2 221x2 258 RAICHUR NAGARJUNASAGAR P Nagjhari 279 172 308 SSLMM MUNIRABAD P KODASAALY 277 52x2 KURNOOL KAIGA SIRSI 120 P N GOOTY CUDDAPAH 60 P DAVANAGERE 300 NELLORE 173 302 KADRA HIRIYUR 330 242 28 NELAMANGALA ALMATHI BANGALORE P MADRAS P KOLAR HOODY TALGUPPA HOSUR MAPS 182 181 63 175 PONDICHERY SALEM 54 P NEYVELI 179 151 164x2 UDUMALPET TRICHY P 130x2 TRICHUR P P 127 130x2 P MADURAI ABOUT 12000 CKM 400KV TRANSMISSION PALLOM KAYANKULAM EDAMON 2x78 THIRUVANATHAPURAM 3500 MW TRANSFER CAPABILITY ON HVDC.ANOTHER 500 MW POLE TO BE ADDED AT GZK. TALCHER POLE CAPABILITY TO BE ENHANCED TO 2500 MW GRID MAP TYPICAL FLOWS ARE FROM NORTH TO SOUTH GRID FOCAL POINT SHIFTED TO KOLAR AFTER COMMISSIONING OF HVDC QUANTUM CHANGES IN FLOW PATTERN LIKELY AFTER COMMISSIONING OF KOODANKULAM 2000 MW

  37. TRANSMISSION IN SOUTHERN INDIA ABOUT 2800 CKM OF 400 KV LINES ADDED IN THE PAST 2 YEARS

  38. LINK TO FOLDER 3D DEMAND, LOAD CURVES HOURLY AVERAGE DEMAND ETC

  39. GRID OPERATION IN THE SOUTHERN REGION

  40. THE GRID • INTERCONNECTED SYSTEMS WITH THOUSANDS OF KILOMETERS OF LINES AND HUNDREDS OF GENERATORS OPERATING WITH SPLIT SECOND SYNCHRONISM IS THE GREATEST SCIENTIFIC ACHIEVEMENT OF THE MILLENIUM • THE LARGEST SINGLE MACHINE EVER CREATED

  41. INTERCONNECTED SYSTEM A quarter century ago, Dr. R. Buckminister Fuller proposed interconnecting regional Power System into a single, continuous worldwide Electric Energy Grid as a number one solution to solve many of the world's pressing problems. While he envisioned creating economical Power Systems, Fuller also saw power grid as the way to reduce human suffering, preserve the environment and make war obsolete. Expanding power grid has proved to be both economically and environmentally desirable since the time zone and seasonal diversity that exist between adjacent Power Systems can postpone or eliminate the necessity of building redundant generation.

  42. STATE ELECTRICIY BOARD STATE GOVERNMENT CENTRAL GOVERNMENT CENTRAL TRANSMISSION UTILITY REGIONAL ELECTRICITY BOARD CENTRAL SECTOR GENERATORS DISCOMS SYSTEM OPERATORS STAKE HOLDERS CENTRAL ELECTRICITY REGULATORY COMMISSION CENTRAL ELECTRICITY AUTHORITY STATE SECTOR GENERATORS TRANSCO COURT OF LAW? STATE ELECTRICITY REGULATORY COMMISSION CAPTIVE POWER PLANTS CONSUMERS STATE SECTOR GENERATORS POWER TRADING CORPORATION INDEPENDENT POWER PRODUCERS METER DATA COLLECTING VENDORS

  43. GRID OPERATION: A TIGHT ROPE WALK POWER SWINGS INSTABILITY INCREASED LOSSES BLACK-OUT IN-ECONOMIC OPERATION VOLTAGE COLLAPSE

  44. GRID OPERATION IN THE PAST • LOW FREQUENCY PROBLEMS • FREQUENCY REMAINED AT 48 HZ AND BELOW FOR MOST PART • LOW VOLTAGE OPERATION • VOLTAGE AT BANGALORE DIPPED TO AS LOW AS 300 Kv!!!! • FREQUENT GRID DISTURBANCES • A DISTURBANCE ALMOST EVERY MONTH • IMMENSE FINANCIAL LOSSES FOR INDUSTRY • LOADS FREQUENTLY CUT OFF DUE TO RELAY OPERATION • INCREASED ELECTRICAL LOSSES • INEFFICIENT OPERATION OF ELECTRIC EQUIPMENTS • GRID OPERATION FOCUSSED ON FIRE-FIGHTING RATHER THAN OPTIMISATION AND ECONOMY ...THE END RESULT : COSTLY AND LOW QUALITY OF POWER!

  45. LANDMARK EVENTS • ADDITION OF GENERATING CAPACITY • TALCHER-KOLAR AND ASSOCIATED SYSTEM • UNIFIED LOAD DESPATCH SCHEME • TRANSMISSION SYSTEM AUGMENTATION • AVAILABILITY BASED TARIFF ...THESE EVENTS CHANGED THE FACE OF GRID OPERATION

  46. IMPROVEMENTS IN GRID OPERATION • POWER SYSTEM PARAMETERS • FREQUENCY IMPROVED • VOLTAGES STABLE ACROSS THE GRID • OPTIMAL OPERATION • LOSSES REDUCED BY 1-1.5 % THROUGHOUT THE GRID • SAVINGS OF ABOUT Rs 450 CRORES EVERY YEAR! • MERIT ORDER OPERATION :- OPTIMISATION • HYDRO CONSERVATION • HEALTHY RESERVOIR LEVELS • USE HYDRO GENERATION FOR PEAKING AND RESERVE • PUMP MODE OPERATION AT KADAMPARAI • TALCHER – KOLAR LINK • INTER REGIONAL POWER :- 10530MUs/1600MW MAX • UTILISATION OF COMMERCIAL MECHANISM • TURNOVER OF 5143 MU ON UI WORTH MORE THAN 900 CRORES • COSTLY GENERATION REDUCED. UI ...THE END RESULT : AN EFFICIENT AND OPTIMAL OPERATED GRID

  47. WHAT THE GRID EXPECTS FROM THE GENERATOR • PROVIDE PRIMARY RESPONSE • PARTICIPATE IN REACTIVE POWER • MATCH RAMPS WITH GRID DEMAND • FLEXIBILITY • BLACK START CAPABILITY • GOOD CO-ORDINATION • FLOW OF INFORMATION • ALL WHAT A SOCIETY EXPECTS FROM A CIVILISED CITIZEN ...PUBLIC SERVICE WHILE SELLING PRIVATE GOODS

  48. WHAT THE GENERATOR EXPECTS FROM THE GRID • STABLE FREQUENCY • GOOD VOLTAGE PROFILE • STRONG CONNECTIVITY • ROBUST MARKET • FLOW OF INFORMATION • ALL WHAT A CIVILISED CITIZEN EXPECTS FROM A SOCIETY ...CITIZEN - SOCIETY RELATIONSHIP

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