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CHAIRMAN & MEMBERS FROM KARNATAKA ELECTRICITY REGULATORY COMMISSION

POWER GRID CORPORATION OF INDIA LIMITED. SOUTHERN REGIONAL LOAD DESPATCH CENTRE. WELCOMES. CHAIRMAN & MEMBERS FROM KARNATAKA ELECTRICITY REGULATORY COMMISSION. & DIRECTOR (TRANSMISSION) , KPTCL. PRESENTATION OVERVIEW. SOUTHERN REGIONAL GRID – QUICK FACTS

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CHAIRMAN & MEMBERS FROM KARNATAKA ELECTRICITY REGULATORY COMMISSION

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  1. POWER GRID CORPORATION OF INDIA LIMITED SOUTHERN REGIONAL LOAD DESPATCH CENTRE WELCOMES CHAIRMAN & MEMBERS FROM KARNATAKA ELECTRICITY REGULATORY COMMISSION & DIRECTOR (TRANSMISSION) , KPTCL

  2. PRESENTATION OVERVIEW • SOUTHERN REGIONAL GRID – QUICK FACTS • SR GRID OPERATION – TYPICAL ISSUES IN PAST • SR GRID – CARDINAL EVENTS • SR GRID OPERATION – PRESENT STATUS • PROJECTS IN PIPELINE – KARNATAKA & SR • ISSUES OF INTEREST – FURTHER CHALLENGES/GOALS

  3. SOUTHERN REGIONAL GRIDQUICK FACTS

  4. REGIONAL GRIDS INSTALLED CAPACITY NORTHERN :- 31,230 MW EASTERN :- 17,697 MW SOUTHERN :- 31,931 MW WESTERN :- 32,354 MW NORTH-EASTERN :- 2,357 MW TOTAL 115,569 MW NORTHERN REGION NORTH-EASTERN REGION EASTERN REGION WESTERNREGION SOUTHERN REGION

  5. ‘ ELECTRICAL’ REGIONS 1 NORTHERN REGION NORTH-EASTERN REGION EASTERN REGION 2 WESTERNREGION 3 SOUTHERN REGION SAME FREQUENCY FROM GUJARAT TO ARUNACHAL PRADESH WITH EFFECT FROM MARCH 2003 ABOUT 2800 KMS! APART

  6. ‘ELECTRICAL’ REGIONS NORTHERN REGION 1 NORTH-EASTERN REGION EASTERN REGION WESTERNREGION 2 SOUTHERN REGION WITH THE COMMISSIONING OF THE TALA PROJECT CONNECTING THE EASTERN AND NORTHERN GRIDS, INDIA WILL HAVE ONLY TWO GRIDS

  7. ANDHRA PRADESH KARNATAKA TAMIL NADU KERALA SOUTHERN REGION – GEOGRAPHY POPULATION :- 22.5 CRORES ( 22% OF INDIA) AREA :- 651 (‘000 SQ KM)(19% OF INDIA) INSTALLED CAPACITY:- 31,931 MW(27.6%) WEATHER :- South-west monsoon North-east monsoon SEA COAST :- AROUND 4000 KM

  8. SR STATES – POWER SYSTEM STATISTICS KARNATAKA INSTALLED CAPACITY – 5802 MW MAX DEMAND MET – 5445 MW DAILY CONSUMPTION MAX – 107 MU DAILY CONSUMPTION AVG – 84 MU CONSUMER PROFILE – DOM INDU AGRI COMML OTHERS 37% 26% 33% 3% 1% . ANDHRA PRADESH INSTALLED CAPACITY – 9531 MW MAX DEMAND MET – 7441 MW DAILY CONSUMPTION MAX – 166 MU DAILY CONSUMPTION AVG – 130 MU CONSUMER PROFILE – DOM INDU AGRI COMML OTHERS 22% 29% 34% 5% 10% . TAMIL NADU INSTALLED CAPACITY – 7074 MW MAX DEMAND MET – 7228 MW DAILY CONSUMPTION MAX – 147 MU DAILY CONSUMPTION AVG – 126 MU CONSUMER PROFILE – DOM INDU AGRI COMML OTHERS 21% 33% 27% 9% 10% . KERALA INSTALLED CAPACITY – 2617 MW MAX DEMAND MET – 2426 MW DAILY CONSUMPTION MAX – 39 MU DAILY CONSUMPTION AVG – 34 MU CONSUMER PROFILE – DOM INDU AGRI COMML 76% 2% 6% 16%.

  9. GROWTH OF INSTALLED CAPACITY OF SR IN MW Average Growth ~ 5 %

  10. INSTALLED CAPACITY IN SR The above capacity does not includes --- About 1344 MW of Wind Mill Capacity in Tamil Nadu. --- Micro and Captive plants in different states.

  11. SOURCE-WISE INSTALLED CAPACITY OF SR IN MW NUCLEAR OTHERS WIND HYDRO GAS THERMAL 31,931 MW

  12. AGENCY-WISE INSTALLED CAPACITY OF SR 31,931 MW IN MW IPP ANDHRA PRADESH CENTRAL SECTOR KARNATAKA TAMIL NADU KERALA

  13. TYPICAL LOAD CURVE OF SR EVENING PEAK SUMMER WINTER MONSOON WEATHER RESERVOIR CONSUMPTION

  14. LOAD COMPOSITION IN SOUTHERN GRID Domestic Others Industry Commercial Agriculture

  15. TYPICAL LOAD SPREAD IN SR LOAD 500-1200 MW LOAD 200-500 MW

  16. SR GRID - HIGHLIGHTS • WIDE SPREAD TRANSMISSION NETWORK • HIGHEST CAPACITY HVDC LINK IN COUNTRY • GENERATING UNITS OF VARIED TYPE & CAPACITY • 32 Nos. of 400 KV SUB-STATIONS • 17600 MVA TRANSFORMATION CAPACITY • INTER-REGIONAL LINKS WITH ALL NEIGHBOURING REGIONS

  17. SR GRID TYPICAL ISSUES IN THE PAST

  18. "If a path to the better there be, it begins with a full look at the worst."-- Thomas Hardy

  19. SR GRID OPERATION – TYPICAL ISSUES IN PAST • LOW FREQUENCY PROBLEMS • FREQUENCY EXCURSES TO LOW VALUES • LOW VOLTAGE OPERATION • VOLTAGE AT EHV GRID LEVEL DIPPES TO CRITICALL LOW LEVELS • SYSTEM BROWNOUTS / BLACK OUTS • LOADS FREQUENTLY CUT OFF DUE TO RELAY OPERATION • INCREASED ELECTRICAL LOSSES • INEFFICIENT OPERATION OF ELECTRIC EQUIPMENTS ...THE END RESULT :

  20. SR GRID OPERATIONPRESENT STATUS

  21. GRID OPERATION –PRESENT STATUS • STABILISED SYSTEM FREQUENCY • IMPROVED VOLTAGES • MERIT ORDER OPERATION • OPERATIONAL EXCELLENCE • INTER REGIONAL EXCHANGES • IMPROVED GRID SECURITY JAN - 02 JAN - 03 Vol FGMO

  22. SR GRIDCARDINAL EVENTS

  23. SR GRID -- CARDINAL EVENTS • AVAILABILITY BASED TARIFF • UNIFIED LOAD DESPATCH SCHEME • TALCHER-KOLAR HVDC LINK • SPECIFIC ACTIONS BY SRLDC • FINANCIAL DISCIPLINE SCHD DRWL ...THESE EVENTS CHANGED THE FACE OF GRID OPERATION

  24. PROJECTS IN PIPELINEKARNATAKA & SR

  25. PROJECTS IN SOUTHERN REGION • 400 KV MADURAI-TRIVANDRUM LINE • 400 KV RAMAGUNDAM – HYDERABAD-RTPS-GOOTY-BANGALORE LINE • ADDITIONAL 500 MW HVDC POLE AT GAZUWAKA • SYSTEM AUGMENTATION PROJECTS • 400 KV KHAMMAM-N’SAGAR • LILO OF N’SAGAR-GOOTY AT KURNOOL • NEW 400 KV SS IN TAMIL NADU • ADDITIONAL 400 KV SS NEAR MADRAS • 400 KV BACKBONE CORRIDOR IN KERALA • KOODANKULAM EVACUATION SCHEME – 2000 MW CAPACITY

  26. PROJECTS IN KARNATAKA • 400 KV NELAMANGALA-MYSORE LINE WITH 400 KV SUBSTATION AT MYSORE • 400 KV SUB STATION AT HIRIYUR • 400 KV KAIGA-NARENDRA-KOLHAPUR LINK • 400 KV SUB STATION AT NARENDRA • 400 KV RING MAIN AROUND BANGALORE • 400 KV 2nd GOOTY-BANGALORE LINK • ADDITIONAL 400 KV EVACUATION LINK FOR RAICHUR THERMAL POWER PLANT

  27. BANGALORE 400 KV RING MAIN KOLAR NELAMANGALA HOODY 400 KV RING MAIN SOMANAHALLI

  28. ISSUES OF INTERESTFURTHER CHALLENGES/GOALS

  29. FURTHER CHALLENGES/GOALS • INTRA-STATE ABT • METERING AND BILLING • HARNESSING UNUTILISED CAPACITY • FACILITATING SHORT TERM OPEN ACCESS • ENHANCING BANKING/WHEELING VIABILITY

  30. Voltage at Bangalore Jan 02 & 03

  31. MONSOONS SOUTH WEST MONSOON NORTH EAST MONSOON

  32. TALCHER GRID MAP 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 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 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 T.L.BREAKUP IS NEXT! EDAMON THIRNELVALI KAYANKULAM 2x78 KOODANKULAM THIRUVANATHAPURAM

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

  34. TALCHER KOLAR SCHEMATIC TALCHER Electrode Station Electrode Station KOLAR +/- 500 KV DC line 1370 KM Kolar 400kv System 220kv system Hosur Hoody B’lore Chintamani Salem Madras Cudappah Udumalpet

  35. GENERATING UNITS IN SOUTHERN REGION A.P TYPICAL GENERATOR SPREAD IN SR KAR - HYDRO - THERMAL KER TN GENERATORS ABOVE 1000 MW - GAS / NAPTHA GENERATORS 500 – 1000 MW - NUCLEAR GENERATORS BELOW 500 MW

  36. 400KV SUB-STATIONS IN SR KALPAKKA RAMAGUNDAM 1 GAZUWAKA P SIMHADRI KHAMMAM HYDERABAD P P P MAMIDIPALLY P VIJAYAWADA RAICHUR NAGARJUNASAGAR P SRI SAILAM MUNIRABAD P KURNOOL P GOOTY CUDDAPAH 60 P NELLORE DAVANAGERE HIRIYUR NELAMANGALA BANGALORE TALAGUPPA KOLAR P MADRAS -- OF POWERGRID P HOODY HOSUR -- OF NTPC NEYVELI TPS I (EXP) 63 -- OF ANDHRA PRADESH SALEM P NEYVELI -- OF KARNATAKA UDUMALPET TRICHY P -- OF NLC TRICHUR P P P MADURAI

  37. ICT SUMMARY IN SOUTHERN INDIA

  38. INTER REGIONAL LINKS CHANDRAPUR TALCHAR ORISSA JEYPORE CSEB MAH BALIMELA BARSUR RAMAGUNDAM GAZUWAKA U.SILERU KOLHAPUR L.SILERU A.P BELGAUM AMBEWADI HVDC BI POLE HVDC B2B STATION KAIGA GOA CENTRAL GEN.STATION KAR 220 kV LINE 400 kV LINE KOLAR MAPS 110 kV HVDC LINE NEYVELI PONDICHERRY T.N KER POWERGRID SRLDC

  39. Inter Regional Links 1650 MW 700 MW 1850 MW 900 MW 30,500 MW 2300 16,000 700 MW 32,700 MW 1200MW Present IR Capacity = 9,000 MW 30,500 MW 2000MW

  40. NORTHERN REGION 13450 MW 4600 MW NORTH-EASTERN REGION 6450 MW 1000 MW WESTERNREGION 1300 MW 3200 MW SOUTHERN REGION INTER-REGIONAL TRANSFER BY END OF 11th PLAN (2012) EASTERN REGION 30,000 MW OF INTER-REGIONAL POWER BY 2012

  41. LONG TERM LOAD FORECAST FUND MOBILISATION POWER PURCHASE AGREEMENTS CAPACITY COMMITTMENT SHORT TERM LOAD FORECAST DAY-AHEAD SCHEDULING REAL-TIME SPOT/BALANCING MARKET REAL TIME 15 MT BLOCKS 10-5 YEARS 1-5 YEARS WEEK TO DAY AHEAD THE INDIA ELECTRICITY MARKETTIME LINE

  42. Components of inter-utility tariff(Pre – ABT Mechanism) • Fixed charges • Interest on loans • Depreciation • O & M charges • Return on equity • Interest on Working Capital • Energy charges (fuel cost) • Incentives • Surcharge & other levies • No charge for reactive energy

  43. Payment to Inter State Generating Stations (ISGS) from beneficiaries underAvailability Based Tariff (ABT) • Capacity charges • Energy charges • Unscheduled Interchange (UI)

  44. CAPACITY CHARGE Capacity charge will be related to ‘availability’ of the generating station and the percentage capacity allocated to the state. ‘Availability’ for this purpose means the readiness of the generating station to deliver ex-bus output expressed as a percentage of its rated ex-bus output capability.

  45. ENERGY CHARGE Energy charges shall be worked out on the basis of a paise per kwh rate on ex-bus energy scheduled to be sent out from the generating station as per the following formula Energy charges = Rate of energy charges (paise/kwh) x ScheduledGeneration (ex-bus MWh)

  46. UNSCHEDULED INTERCHANGE (U I) : • Variation in actual generation / drawal with respect to scheduled generation / drawal shall be accounted for through Unscheduled Interchange (UI). • UI for generating station shall be equal to its total actual generation minus its scheduled generation. • UI for beneficiary shall be equal to its total actual drawal minus its total scheduled drawal.

  47. UNSCHEDULED INTERCHANGE (U I) : • UI shall be worked out for each 15 minute time block. • Charges for all UI transactions shall be based on average frequency of the time block. • UI rates shall be frequency dependent and uniform throughout the country.

  48. UI RATE Rate of Unscheduled Drawal/Injection

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