hr wm 01 february sr i 2009s11indian power scenario revised
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INDIAN POWER SCENARIOINDIAN POWER SCENARIO
PAST,PRESENT,FUTUREPAST,PRESENT,FUTURE
ByByJITENDRA KUMAR BALJITENDRA KUMAR BAL
CHIEF MANAGER (HRD)CHIEF MANAGER (HRD)POWERGRIDPOWERGRIDEDC, HYDERABADEDC, HYDERABAD
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INDIAN POWER SYSTEM GROWTHEVOLUTION
Installed capacity growth from 1349MW in 1947to 140GW by 2007 and 210 GW by 2012
Transmission system transformed from isolatedsmall grids to state grids and inter state grids.
Formation of state grid in 1960s
Formation of Regional grids in 1970s
Asynchronous interconnection of regional gridsin1990s
Towards formation of National grid from 2000 onwards
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INDIAN POWER SYSTEM SIGNIFICANT
PARAMETERS AS ON 30.06.08
14.75%All India Deficit April to June 08
89602 MWDemand met (April-07)
104007 MWAll India Peak demand (April-07)
154230Villages yet to be electrified
606 units/yearPer capita consumption (04-05)
74:26Thermal Hydro Mix
1 44 913 MWTotal Installed capacity (Present)
Thermal 92565 MW
Hydro - 36033 MW
Nuclear - 4120 MW
RES - 12194 MW
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PER CAPITA CONSUMPTION A
COMPARISON
431 unitsPakistan
606unitsIndia
1651unitsChina
5710 unitsUK
10905 unitsAustralia
12250 unitsUS
3012units per annumWorld average per capitaconsumption
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INDIAN POWER SYSTEM VILLAGES
YET TO BE ELECTRIFIED
Total No. of Villages : 593732
Villages Electrified : 439615
%Villages Electrified : 74%
Villages yet to be Electrified : 154117
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INDIAN POWER SYSTEM
TRANSMISSION NETWORK
5872ckmHVDC
110916ckm220kV
70565ckm400kV
2013ckm765/800kV
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SOUTHERN REGION POWER SYSTEM
AT GLANCE As on JUNE 08
ALL INDIA INSTALLED CAPACITY
NR ---- 38237 MW
WR ---- 44768 MW
ER ----- 19809 MW
SR ---- 39656 MW
NER --- 2366 MW
ISLANDS- 76 MW
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SOUTHERN REGION POWER SYSTEM
AT GLANCE As on April 08
INSTALLED CAPACITY IN SOUTHERN REGION
AP - 9455 MW
KARNATAKA - 7672 MW
TAMILNADU - - 10846 MW
KERALA - - 2311 MW
PONDY - 33 MW
CGS - 9340 MWTOTAL - 39656 MW
GROSS DEMAND MET - 25714 MW
GROSS UNRESTRICTED REQ IN SR- 26737 MW
DEFICIT - 1023 MW May 08.
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ER
SR
NR
HVDC BACK TO BACK LINKS
Evolution of National Grid
1.VINDYACHAL
2.CHANDRAPUR
3.GAZUWAKA4.SASARAM
Stage I NationalGrid completed
Interlinking all the
Regions with HVDC
Back to Back links.
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ASYNCHRONOUS LINKS Part of National Grid
NER
ER
SR
NRNER
ER
SR
NRRIHAND-DELHI -- 1500 MW
CHANDRAPUR-PADGE 1500 MW
TALCHER-KOLAR 2000 MW
SILERU-BARASORE - 100 MW
HVDC BTB VINDYACHAL 500 MW
HVDC BTB CHANDRAPUR 1000 MW
HVDC BTB VIZAG - 500 MW
HVDC BTB SASARAM - 500 MW
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SOUTHER
N REGION
WESTERN
REGION
EASTERN
REGION
NORTHERN
REGION
NORTH-
EASTERN
REGION
1
2
3
With the
commissioning of
Raipur-Rourkela
between WR and ER
during March 2003,
Indian power system
operating in three
electrical Regions.
3 ELECTRICAL
REGIONS
EVOLUTION OF NATIONAL GRID
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SOUTHE
RN
REGION
WESTER
NREGION
EASTERN
REGION
NORTHER
N REGION
NORTH-
EASTERN
REGION1
2
With theCommissioning of
the Tala
Transmission
system during Oct
06 the E.R ,W.R and
N.R Grids weresynchronised and
Indian Power
systems is
operating on Two
Electrical Grids.
2 ELECTRICAL
REGIONS
EVOLUTION OF NATIONAL GRID
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POWER SYSTEM 2012 Target Installed capacity growth from 140GW in
2007 to 210GW in 2012.
Transmission system voltage up gradationfrom 400kV to 765KV for HVAC systemsand from 500kV to 800kV for HVDCsystems.
Enhancement in Inter Regional powertransfer capacity from the present 13700MW to 37000MW in 2012.
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POWER SYSTEM 2012 Target
ESTABLISHMENT OF ULTRA MEGA POWER PLANTS WITHASSOCIATED TRANSMISSION SYSTEM
MUNDRA GUJARAT 4000 MW BY TATAS-WORK COMMENCED SASAN M.P - 4000 MW BY RELIANCE-WORK COMMENCED.
KRISHNAPATNAM-AP- 4000 MW.- BY RELIANCE
TILAIYA JHARKAND 4000 MW ---Bids yet to be opened.
GIRYE MAHARASTRA 4000 MW TADRI KARNATAKA --- 4000 MW
AKALTARA CHATTISGARH 4000 MW
7 such Power plants (28000 MW) of above size are planned to be taken up inthe entire country during NEXT 7 YEARS .
2 more plants identification is under progress by PFC. In T.N , Orissa
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POWER SYSTEM 2012 Target
KRISHNAPATNAM- TRANSMISSION SYSTEM 3 * D/C lines 400 KV QUAD MOOSE
(One D/C to Kurnool , One DC To Nellore and One D/Cto Gooty )
765 kV line from Kurnool to Raichur 765 kV 2 S/C from Raichur to Sholapur 765 kV sub stations at kurnool & Raichur with 3000
MVA transformation each. (Single phase Transformerseach 500 MVA)
. LINE REACTORS OF EACH 240 MVAR at either end.(1 Ph 80 MVAR)
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POWER SYSTEM VISION 2022
Installed capacity at 600GW Likely additions
Hydro :80GW
Coal based :80GW
Coastal :90GW (Imported fuel) Nuclear :90GW
Distributed Gen :50GW
Next five decades Nuclear power predominates
upto 35 % total power generated by 2050.
By 2050 11 to 12 Lakhs MW required and 3 lakhs MWfrom Nuclear.
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POWER SCENARIO BEYOND 2025
Peak Demand : 450000MW
Installed capacity :600000MW
Inter Regional capacity :140000MW
Need to go for super grid with transmissionvoltage level: 1200kV UHVAC & 800kV
HVDC
Support Tr. Network:
765kV EHVAC and 500kV HVDC Sub Transmission network :
400kV HVAC Transmission system
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2025 Hierarchy of Transmission &
Distribution
1200kV UHVAC
765kV EHVAC
800 kV UHVDC
Distribution TransmissionSub transmission
66/ 33kV AC
11kV AC
0. 4 kV AC
400kv
132 Kv
220 kv
ICTICT
Generatingstations
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Grid Operation 2025 Major
challenges
Reactive power Management
1200kV UHVAC line generates about
6MVAR/KM
400kV HVAC line generates about 0.55
MVAR/KM
High short circuit levels (70-100KA)
1200kV UHVAC line generates about 6MVAR/KM
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SASARAM
SIPAT
DHULE
SOLAPUR
PUNE
LAKSHADWEEP
ITARSI
BINA
WARDHA
RAICHUR
INDORE
SEONI
SATNA
SASAN
KOTA
JAIPUR
AGRA
MOGA
MUNDKA
GWALIOR
KISHENPUR
TEHRI
LUCKNOW
FATEHPUR
BAREILLY
MEERUT
NICOBAR
1200KV UHVAC LINES
765KV EHVAC LINES
800kV HVDC BIPOLE
LEGEND
NKSTPP
RANCHI
ANDAMAN&
GAYA
BALIA
B'CHARYALI
POOLINGANGUL
AURANGABAD
RAIGARH POOL
RAIPUR POOL
JABALPURPOOL DHARAMJAYGARH
SAWAI M'PUR
SIKAR
BARNALA
JALANDHAR
BARODA
SUPER GRID /HYBRID GRID
APPILCATION TOTHE TUNE OF
1.00 Lakh MW CapacityAddition in LTOANOW ITSELF
REQUIREMENT OF
INTELLEGENT GRID
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INDIA IS DIVIDED INTO 5 ELECTRICALREGIONS TO FECILITATE
BETTER GRID MANAGEMENT
ELIMINATION OF TOTAL BLACK OUTS
QUICK RESTORATION IN THE EVENT OF
FAILURES.
OPERATION OF REGIONAL GRIDS WITH SOUND
COMMERCIAL PRINCIPLES
NATIONAL GRID OPERATION
PRESENT PRACTICE
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GRID MANAGEMENT & LOAD DISPATCH
CENTERS
N L D C
NRLDC ERLDC SRLDC WRLDC NERLDC
APTRANS KPTCL TNEB KSEB PONDYCPCC
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RLDC - FUNCTIONS
Monitoring of system parameters and Grid security. To ensure the integrated operation of theRegional
Grids
System studies, planning and contingency analysis.
Analysis of tripping/disturbances and facilitatingimmediate remedial measures. Daily scheduling and operational planning.
Facilitating bilateral and inter-regional exchanges. Computation of energy despatch and drawal values
using SEMs.
Augmentation of telemetry, computing andcommunication facilities
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RLDC MAJORACHEIVEMENTS
Improved system parameters ever sincethe implementation of Availability basedtariff.
Sharp decline in the Grid disturbances. High system security & redundant
system operation with theimplementation of real time data
acquisition system. Ease in commercial accounting system
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AVAILABILITY BASED TARIFF -- ABT
1. IT IS A THREE PART TARIFF SYSTEM
a) Fixed/Capacity charges for the Generator
b) Energy Charges
c) Charges for Deviation which is frequency linked (UI)
2. Normal frequency range 49.0 to 50.50 Hz
3. UI charges The generating station has to abide by the
declaration of availability on each day .If Generator generates
less than declared at low frequency , the generator is
penalised. If the deviations are above High frequency side the
generator will not be entitled for payment.
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AVAILABILITY BASED TARIFF -ABT
The UI rate varies according to the frequency prevailing in the grid
745
UI rate in paise/Unit
337
228
0
49 49.5 49.8 50.5
Frequency in HzTotal Payment for the day = Capacity charges + Energy charge UI char
9 Paise/Kwh for 0.02 Hz
16 paise/Kwh for 0.02 Hz step
6 Paise/Kwh for 0.02 Hz
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IMPLIMENTATION OF ABTSR 01.01.2003
WR 01.07.2002
NR 01.12.2002
ER 01.04.2003
NER 01.04.2007
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Reactive Energy charges :To control the voltage in the grid additional charges in the form of
Reactive energy charges are also charged
a. Payable for i) VAR drawl at voltage below 97 % of Voltage level
ii) VAR injection at voltage above 103 %of voltage level
b) Receivable for i) VAR injection at voltage below 97% of Voltage
ii) VAR drawl at voltages above 103 % of voltage level
c) Applied for VAR exchanges between i)Beneficiary system and
ISTS through pool account ii) Two beneficiary systems oninter state ties by themselves
Reactive Energy charges are @ 4 paise/KVARh with an escalation
5 % per year.
AVAILABILITY BASED TARIFF -ABT
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ADVANTAGES OF ABT
-- FACILITATES GRID DISCIPLINE
-- FACILITATES TRADING IN CAPACITY AND ENERGY
-- FACILITATES MERIT ORDER DESPATCH AS AND
WHEN MADE EFFECTIVE
-- IMPROVED FREQUENCY AND VOLTAGE
-- ECONOMIC DESPATCH
AVAILABILITY BASED TARIFF -ABT
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FREQUENCY COMPARISION
Jan 02 & Jan 03
AVAILABILITY BASED TARIFF -ABT
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FREQUENCY COMPARISION
Feb 02 & Feb 03
AVAILABILITY BASED TARIFF -ABT
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Feb 02 & Feb 0374
53
72 1 0
3 40 0 0 0
0
20
40
60
80
100
2001-02 2002-03 2003-04 2004-05 2005-06 2006-07
Year
GridDisturbances
Minor
Major
Minimum Grid disturbances after ABT
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DEFINITION OF OPEN ACCESS INTHE ELECTRICITY ACT, 2003
The non-discriminatory provision for the use of
transmission lines or distribution system or
associated facilities with such lines or system byany licensee or consumer or a person engaged
in generation in accordance with the regulations
specified by the Appropriate Commission
CERCs Order on Open Access is effective from
06.02.2004
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Salient Features of CERC Order/Regulations
Open Access customers categorised :
Short-Term - Upto One year.Long-Term - Twenty Five years or more
All Open Access customers to abide by IndianElectricity Grid Code.
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NODAL AGENCY FOR OPEN ACCESS
For Short-Term Customers
RLDC of the Region in which the drawal point is
located.
For Long-Term Customers
Central Transmission Utility (CTU)
STU of the region in which the drawal point is
located when CTU system is not involved.
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POWERGRID AT GLANCE
MISSION : Establishment and operation of Regional and
National Power Grid to facilitate transfer of
power within and across the regions with
Reliability, Security and Economy on sound
commercial principles.
Total length of transmission lines ---- 68035 Ckt Km
Total no. of 400 kv/220kv/132 kv S/S 113 Nos
Total transformation capacity --- 74382 MVA as on 30.05.08
Transmission system availability -- > 98.5 %
First power utility to get ISO-9001 certificate
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POWERGRID SOUTHERN REGION
AT GLANCE As on 01.04.08
1No. of 220kV GIS sub station
1No. of HVDC Terminal stations2
No. of HVDC Back to Back links
23No. of 400kV sub stations
4000 MWInter Regional Transfer capacity
10008 MVATotal Transformation capacity
11176.26 Ckt km
2016 Ckt km
Total Transmission network
- 400kV HVAC
- 500kV HVDC
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ABOUT POWERGRID
POWERGRID HAS EXPERTISE IN THE FOLLOWING
UPTO 800 KV AC SYSTEMS
500 KV HVDC SYSTEMS GAS INSULATED SUB STATIONS
STATIC VAR COMPENSATORS
SERIES COMPENSATION
CONTROLLED SHUNT REACTORS
FLEXIBLE AC TRANSMISSION SYSTEM
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ABOUT POWERGRID
CONSULTANCY WORKS AT ABROAD
Construction of 220 KV , 200 KM long Transmission
linein Afghanistan which is at a height of 4000 Mts above
sea level with snow for 9 months.
Execution of Optical Fibre network / Transmission
system in Bhutan.
Construction of 400KV GIS and associated
transmission network at Dubai
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MAJOR ACHIEVEMENTS & CHALLENGES
1. ESTABLISHED ASYCHRONOUS NATIONAL GRID
WITH THE HELP OF HVDC LINKS/ HVDC
TRANSMISSION
2. ESTABLISHED UNIFIED LOAD DISPATCH SCHEMES
IN SR,NR,ER. ULDC WORKS ARE UNDER PROGRESS
IN WR
3. ESTABLISHMENT OF SYNCHRONOUS NATIONAL GRIDBY 2012
4. ESTABLISHMENT OF NATIONAL BACKBONE
TELECOM NETWORK
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MAJOR ACHIEVEMENTS & CHALLENGES
5. STRENGTHENING OF DISTRIBUTION SYSTEM AND
RURAL ELECTRIFICATION OF 87300 VILLAGES
IN 68 DISTRICTS OF 9 STATES.
6. INVESTMENT TO THE TUNE OF Rs 70,000 CRORES
ENVISAGED BY 2012
7. SETTING UP OF SUPER GRID AND HYBRID GRID
BEYOND 2017
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UNIFIED LOAD DISPATCH SCHEMES ULDC
POWERGRID IMPLEMENTED LOAD DISPATCH ANDCOMMUNICATION SCHEMES THROUGH OUT COUNTRY
ER, NR,SR ULDC SCHEMES ARE COMPLETED AND
PRESENTLY UNDER OPERATION
BENEFITS OF ULDC
ECONOMIC DISPATCH OF POWER AMONG THE
REGIONS/STATES ON REAL TIME BASIS.
EFFECTIVE MONOTORING OF REAL/REACTIVE POWER
FLOWS AND AVOIDS GRID DISTURBANCES
NLDC IS UNDER FINAL STAGE OF COMPLETION
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TELECOM NETWORK
1. POWERGRID ESTABLISHED TELECOM BACKBONE
NETWORK OF ABOUT 14000 KMS TO CONNECT 56 CITIES
2. OUT OF 14000 KM ,-- 10 000 KM ARE WITH OPGW AND
4000 KM WITH OPTIC FIBRE CABLE
3. 56 CITIES SHALL BE CONNECTED TO TELECOM
NETWORK IN 1ST PHASE.
4. PRESENTLY TELECOM ROUTES ARE UNDER OPERATION
A, DELHI MUMBAI
B. DELHI CHANDIGARH
C. DELHI -- JAIPUR
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