Transcript LINES - srldc

PRESENTATION COVERS


Past/Present Power Scenario
Issues involved



Economic aspects
Operational (Technical) aspects
Network development in Southern Region
REFERENCES









Quality Supply Customer requirements CGIRE
working group 37.28 (June 2001)
Methods and Tools for costing Ancillary Services
CGIRE Task force 38.05.07 (June2001)
FERC Rule 888 and 889
Open Access transmission tariff sierra pacific(Sierra
pacific Web Site)
Distribution Policy Committee report MOP March 2002
National transmission Grid study US dept of energy
may 2002
Reliability management and over sight Brendan kibru,
Erichisst oak ridge NATION LAB, TENNESEE
Sixteenth Electric Power Supply of India
Various orders of CERC
MISSION OF POWER SYSTEM
ENGINEERS

To provide Reliable, Stable and
Secured Power supply to the end user
with Least possible cost
ECONOMIC ISSUES

THE UNIQUE NATURE OF
ELECTRICITY:
PRODUCED AND CONSUMED
SIMULTANEOUSLY
 UNECONOMICAL TO STORE ……..AS YET
 FLOW DEPENDS ON PHYSICS NOT ON
CONTRACTS!
 END USER CANNOT DISTINGUISH THE
SOURCE.

How do you buy or sell a commodity



which can not be seen, counted in
numbers, or measured in kg, litres or
metres,
which can not be put in a container with a
forwarding address, on a particular truck
taking a particular route, but flows as per
laws of physics,
which can not be stored, and whose
availability and cost keep changing widely,

which intermingles with all other supplies in an
inevitable pool, and can not have an owner’s
name tag ?

There is another peculiarity: the buyer has no
control over what the seller supplies, and the seller
has no control over what the buyer draws from the
pool, and the two may not match !
It is crucial to have mechanism for commercial
handling of mismatches
QUALITY PERCEPTION

GENERATOR
RELIABE EVACUATION SYSTEM
 GOOD AND STEADY FREQUENCY
 LOW HARMONICS
 BETTER VOLTAGE


USER

PERCEPTION VARIES FROM USER TO USER
DEPENDING ON THE EQUIPMENTS CONNECTED
AND THE PURCHASE POWER
An Analogy – Power System & Human Body
RLDC::Brain
Generation :: Heart
USER
Voltage :: BP
Frequency:: Heart beat
Sub-Transmission :: Sub-Arteries
Distribution :: Capillaries
Transmission :: Main Arteries
Pre-Restructuring – Scenario
A
consolidated, regulated monopoly
 The same utility company:
 Produces
energy
 Transmits energy
 Distributes energy
 Provides ancillary services (e.g.,
scheduling/balancing of generation supply)
 Provides metering & billing services
 Non
Economic operation
 No choice or options for consumers
EVOLVING CULTURE
COMMAND AND CONTROL
 CO-OPERATIVE
 CONTRACTUAL

THE STRATEGIES

RESTRUCTURING
UNBUNDLING
 DEREGULATION


COMPETITION IN GENERATION


INDEPENDENT POWER PRODUCERS
COMPETITION IN DISTRIBUTION

PRIVATE PLAYERS IN DISTRIBUTION
UNBUNDLING AND DE-REGULATION
COMPETITION
 OPTIMAL UTILIZATION OF
RESOURCES
 MORE FOCUS ON CORE ACTIVITIES
 LOWERED COST
 BETTER QUALITY/SERVICE
 LESS DRAIN ON THE EXCHEQUER
 END USER IS BENEFITTED

WHAT IS OPEN ACCESS
TRANSMISSION

IN OPEN ACCESS TRANSMISSION SYSTEM
EVERY STAKE HOLDER GENERATOR,
DISTRIBUTOR , TRANSMITTER AND
TRADER WILL HAVE ACCESS TO THE
TRANSMISSION NETWORK MARGIN FOR
TRANSMITTING THEIR POWER WITHOUT
ANY RESTRICTION.
SCHEMATIC OF UNBUNDLED ACTIVITIES
REGULATOR
WEATHER CONDITION
MAIN TRANSMISSION SYSTEM- NATURAL MONOPOLY
REGIONAL TRANSMISSION SYSTEM- NATURAL MONOPOLY
DISTRIBUTION SYSTEM
CONGESTION
GENERATOR
TRADER
GRID CODE
Quality
Of Supply
CONTRACTS
RETAILER
END - USER
COMPETETION
Physical flow
Commercial Relation
External Influences
Important issues
determining mutual relation
DEFINITION OF “OPEN ACCESS” IN THE
ELECTRICITY ACT, 2003
“The non-discriminatory provision for the
use of transmission lines or distribution
system or associated facilities with such
lines or system by any licensee or
consumer or a person engaged in
generation in accordance with the
regulations specified by the Appropriate
Commission”
A MORE GENERAL DEFINITION OF
ACCESS”
“OPEN
“Enabling of non-discriminatory sale/
purchase of electric power/energy
between two parties utilizing the system of
an in- between (third party), and not
blocking it on unreasonable grounds”
WHY OPEN ACCESS?


STAKE HOLDER MANY STAKE HOLDERS IN AN
UNBUNDLED SCENARIO
EXPECTS THAT HIS REQUIREMENTS BE MET






GENERATOR- EVACUATION THROUGH QUALITY
CONNECTION
TRADERS – CONTRACTS
END USERS - QUALITY POWER AT LEAST COST
TRANSPARENCY
END USER IS NOT JUST A ‘CONSUMER’- HE IS A
CUSTOMER
THE END USER DOES NOT CARE WHERE HE GETS HIS
POWER-AS LONG AS IT COSTS THE LEAST
Stake Holders
Net work Managers
Users of net work
Energy Trading Facilitator
Statutory Authorities
Transmission administrator( CTU)
Metering administrator
System Operator(RLDC)
Net work Owner
Distributor
Generator
Market operator
Energy Retailer
Energy Trader
Power Broker
Electricity Regulator
Other public Authorities
OPEN ACCESS- THE ISSUES - CONGESTION




What is congestion
Effects of congestion
How it Happens
Solutions
What is congestion
Analogy between PowerSystem and Sand Pile
Sand Pile
System State Gradient Profile
Power System
Loading Pattern
Driving Force Addition of Sand Customer Demand
Event
Sand Topples
Limit Flow/Line
Trip
POSSIBLE SYSTEM PROLEMS
UNIT
FAILURE
TRANSFORMER/
LINE FAILURE
REDUCED
NETWORK
REDUNDANCY
LOSS OF
GENERATION
BUS
ISOLATED
LINE OVERLOAD
OR
UNSATISFACTORY
BUS VOLTAGE
INSUFFICIENT
GENERATION
LOSS OF
LOAD
SYSTEM
COLLAPS
E
ILANDING
OPEN ACCESS- THE ISSUES - CONGESTION

CONGESTION- AFFECTS
LESS OPERATING FLEXIBILITY
 CHANCES OF MORE BLACKOUTS
 COSTLIER UNITS MAY BE FORCED TO
RUN
 ROOM FOR DISCRIMINATION
 KILLS THE COMPETITION
 UNEXECUTED CONTRACTS

OPEN ACCESS- THE ISSUES - CONGESTION

HOW IT HAPPENS

PLANNING CRITERIA
FOCUS EVACUATION OF GENERATION
 GEO-POLITICAL BOUNDRY AS LIMITS
 MULTI PLAYER SCENERIO NOT ENVISAGED
 TRANSACTIONS ACROSS GEO-POLITICAL BOUNDRY
NOT ENVISAGED



UNENVISAGED LOAD GROWTH
SHORT TERM –



PLANT/LINE OUTAGES
WIDE SEASONAL FLUCTUATION IN LOADING PATTERN
STAGGERING AND ROSTERING OF LOADS
OPEN ACCESS- THE ISSUES - CONGESTION

IN A MULTIPLE PLAYER MARKET, SYSTEM WILL BE
STRESSED TO LIMITS AND PRESSURE ON RELIABILITY
MARGINS DUE TO


SKEWED GENERATION AND LOAD PATTERN CAUSED BY

INCREASE IN TRADE VOLUME

INCREASE IN COMPETITION

MERIT ORDER OPERATION
PRICE DECIDES THE RULE OF THE GAME
OPEN ACCESS- THE SOLUTION


COST OF TRANSMISSION IS ABOUT 5% TO
10% OF THE DELIVERABLE ENERGY COST.
SHOULD WE ALLOW SUCH A SMALL
COMPONENT TO PREVENT THE END USER
FROM ENJOYING THE RELIABLE AND
AFFORDABLE ELECTRICITY SERVICE ?
NEED OF THE SYSTEM

ROBUST , RELIABLE TRANSMISSION SYSTEM
TO ALLOW OPEN ACCESS TO ALL THE PLAYERS
DEMAND IS EXPECTED TO
REACH 2,12,725 MW BY END
OF 12TH PLAN.
Demand - Supply Scenario – by
2012
Projected Peak Demand - 157,000 MW
Capacity addition envisaged –



In 10th Plan
In 11th Plan
- 45,000 MW
- 55,000 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
Major Load Center –
 Bulk power need to be transferred from ER/NER to
other deficit regions
MAJOR ENERGY RESOURCES IN INDIA
* Hydro Potential : 1,10,000
> 25,000MW already installed
> 19,000MW under implementation
> 66,000MW still to be exploited
Jammu
23,000MW
* 90% coal reserves in ER & WR
Ludhiana
SIKKIM
1,700MW
NEPAL
BHUTAN
Partabpur
RAPP Jaipur
Guwahati
Lucknow
Patna
Pipavav
Bhopal
WR
BANGLA
DESH
AN
ER
Vindhyachal
Gandhinagar
Indore
NER
CHICKEN
NECK
Kolkata
Korba
MM
AR
Delhi
MY
NR
53,000MW
Talcher/Ib Valley
Raipur
Bhubaneswar
Tarapur
Mumbai
Hyderabad
Vizag
Simhadri
SR
Bangalore
Kayamkulam
Thiruvananthapuram
Generation
Coal
Krishnapatnam
Kaiga
Kozhikode
Mangalore
LEGEND
Ennore
South Madras
Chennai
Hydro
Cuddalore
Lignite
Coastal
Kudankulam
COLOMBO
Nuclear
SRI LANKA
Load-Centre
VIJJESWARAM -I(100 MW)(84 PS)
STATION, IC IN MW
BASIN BRIDGE(120 MW)(468 PS)
PP NALLUR(330.5 MW)(415 PS)
RAYALASEEMA(37.8 MW)(330 PS)
KASARGOD P C L(21 MW)(300 PS)
KAYAMKULAM NTPC(350 MW)(290 PS)
TATA DEISEL(81.3 MW)(280 PS)
SAMALPATTY IPP(105 MW)(263 PS)
GMR VASAVI(196 MW)(254 PS)
KOZHIKODE DPP(128.8 MW)(250 PS)
BALAJI(SAMAYANALLUR)(105 MW)(247 PS)
JINDAL(260 MW)(247 PS)
THANNEERBAVI(235 MW)(228 PS)
B S E S (KERALA)(165.5 MW)(225 PS)
NELLORE(30 MW)(225 PS)
BRAHMAPUAM D P P(106.5 MW)(214 PS)
NAVBHARAT(35 MW)(205 PS)
YELEHANKA DEISEL(127.92 MW)(203.36 PS)
L V S(37.8 MW)(200 PS)
ENNORE.T.P.S(450 MW)(190.2 PS)
NEYVELI-I(600 MW)(185.86 PS)
ST-CMS(250 MW)(171 PS)
V S P *(120 MW)(169.11 PS)
METTUR.T.P.S(840 MW)(150 PS)
TUTUCORIN.T.P.S(1050 MW)(133.5 PS)
NORTH MADRAS.T.P.S(630 MW)(130.98 PS)
RAYALASEEMA TPP(420 MW)(126 PS)
KOTHAGUDEM(D)(500 MW)(124 PS)
KOTHAGUDEM(C)(220 MW)(123.1 PS)
KOTHAGUDEM(A)(240 MW)(110 PS)
RAICHUR.T.PS. **(1260 MW)(110 PS)
KOTHAGUDEM(B)(210 MW)(108 PS)
VIJAYAWADA T.P.S.-3(210 MW)(101 PS)
VIJAYAWADA T.P.S.-1&2(1050 MW)(101 PS)
RAMAGUNDAM-B(62.5 MW)(96 PS)
SIMHADRI(1000 MW)(96 PS)
NEYVELI-II STG-II **(840 MW)(94.61 PS)
LANCO(350 MW)(91.48 PS)
RAMAGUNDAM(2100 MW)(90 PS)
REINS CALCINING LTD.(41 MW)(90 PS)
B S E S (AP)(GAS)(140 MW)(87 PS)
VIJJESWARAM -II(172.5 MW)(86 PS)
8000
SPECTRUM (GAS)(208 MW)(83 PS)
12000
JEGURUPADU (GAS)(216 MW)(82 PS)
14000
KOVIL KALAPPAL *(105 MW)(68 PS)
18000
ABOUT 16000 MW
OF CAPACITY IS
BELOW 300 Ps
ABOUT14200 MW
OF CAPACITY IS
BELOW 200 Ps
300
CUM. INS. CAP.
CUMULATIVEINSTALLE
10000
250
ABOUT 7000 MW OF
CAPACITY IS
BELOW 100 Ps
200
6000
150
4000
VARIABLE COST
100
2000
50
0
0
VARIABLE COST IN Ps/UNIT
16000
NEYVELI-II STG 1 **(630 MW)(67.99 PS)
PONDY PCL (32.5 MW)(19.61 PS)
CUMULATIVE INSTALLED CAPACITY IN MW
VARIABLE COST(Ps) OF POWER STATION IN SR AS ON JUNE 2004
450
400
350
68 0
72 0
76 0
80 0
88 0
82.5 0 84 0
92 0
96 0
INDIA
GEO POLITICAL
POWER REGIONS
J&K
PUNJAB
H
P
HARIANA
N
NEPAL
DELH
I
RAJASTHAN
SKM
UP
BIHAR
E
MP
GUJARAT
JKND
W
WB
DAMAN
S
GOA
AP
PONDICHERY
KARNATAKA
A&N
LAKSHADWEEP
TAMIL
NADU
SRI
LANKA
NG
ME
MNP
B’
DESH- TR MIZ
P
MYANMAR
ORISSA
MAHARASHTRA
NER
ASSAMNE
L
CTGR
DIU
BHUTAN
SHARP
PEAK
DEEP
VALLEY
DEEP
VALLEY
URI
765 KV RING MAIN SYSTEM
WAGOORA
DULHASTI
THE POWER
‘HIGHWAY’
RAVI SATLUJ
KISHENPUR
JULLANDHAR
TEHRI
MOGA
BALLABGARH
(DELHI RING)
CHICKEN NECK
A'PUR
BHUTAN
MEERUT
HISSAR
BEARILLY
LUCKNOW
M'BAD
NR JAIPUR
BHIWADI
ALLAHABAD
/UNNAO
MALANPUR
SINGRAULI
250
ZERDA
DEHGAM
0M
W
SATNA
NAGDA
SIPAT
GANDHAR/
LIMBDI
AMRELI KAWAS
CHEGAON
JETPUR
VAPI
BHANDARA
M'PUR
PURNEA
VARANASI
BARH
KAHALGAON
B'SHARIF
VINDHYAMAITHON
CHAL
NORTH
JAMSHEDPUR
KARANPURA
ROURKELA
KORBA
BADARPUR
TIPAIMUKH
NER
BANGLA
DESH
HIRMA
WR
KARAD
TALCHER
JEYPORE
RAMAGUNDAM
SR
KOLHAPUR
KATHALGURI
MARIANI
ER
RAIPUR
WARDA
CHANDRAPUR
1000MW
PADGHEAMRAVATI
PARLI
LONIKAND
KOYNA
DIHANG DAMWE
MISA
SILIGURI/BIRPARA
TARAPUR AKOLA
DHABOL
RANGANADI
500MW
BINA
SEONI
PIPAVAV
BOISAR
TALA
BONGAIGAON
G'PUR
AGRA
SHIROHI
TEESTA
20
00
MW
GAZUWAKA
M
W
VIJAYAWADA
PONDA
20
00
NARENDRA
SIRSI
KAIGA
KRISHNAPATNAM
CHITTOOR
MYSORE
BANGALORE
HOSUR
KOZHIKODE
EP
WE
D
HA
KS
LA
COCHIN
SOUTH CHENNAI
SINGARPET
PUGALUR
CUDDALORE
SALEM
KARAIKUDI
KAYAMKULAM
TRIVANDRUM
LEGEND
X PLAN
EXISTING/
IX PLAN
KAYATHAR
KUDANKULAM
765 KV LINES
400 KV LINES
HVDC B/B
HVDC BIPOLE
NATIONAL
GRID
XI PLAN
DEVELOPMENT OF NATIONAL GRID
URI
PHASE - III
(By 2012)
WAGOORA
DULHASTI
RAVI SATLUJ
KISHENPUR
JULLANDHAR
TEHRI
MOGA
BALLABGARH
(DELHI RING)
CHICKEN NECK
A'PUR
BHUTAN
MEERUT
HISSAR
LUCKNOW
BHIWADI
M'BAD
AGRA ALLAHABAD
/UNNAO
NR JAIPUR
SHIROHI
300
JETPUR
TALA
RANGANADI
VARANASI
MALANPUR
SINGRAULI
KATHALGURI
MARIANI
MISA
SILIGURI/BIRPARA
BADARPUR
500MW
TIPAIMUKH
B'SHARIF
KAHALGAON
/BARH
DEHGAM
NAGDA BINA
VINDHYACHAL
SATNA
ROURKELA
KORBA
RAIPUR
TARAPUR AKOLA
PIPAVAV
BOISAR
PADGHE
CHANDRAPUR
1000MW
MW
00
20
AMRAVATI
WR
DHABOL
LONIKAND
KOYNA
KARAD
NARENDRA
SIRSI
ER
TALCHER
JEYPORE
GAZUWAKA
SR
KAIGA
HIRMA
RAMAGUNDAM
KOLHAPUR
PONDA
NER
BANGLA
DESH
KRISHNA
NAGAR
N.K.
SEONI SIPAT
GANDHAR/
AMRELI KAWAS
CHEGAON
VAPI
BHANDARA
LEGEND
EXISTING/
IX PLAN
X PLAN
VIJAYAWADA
765 KV LINES
KRISHNAPATNAM
400 KV LINES
HVDC B/B
CHITTOOR
HVDC BIPOLE
MANGALORE
BANGALORE
HOSUR
SOUTH CHENNAI
P
EE
DW
HA
KS
LA
PUGALUR
KARAIKUDI
KAYAMKULAM
TRIVANDRUM
KAYATHAR
N AND
ANDAMA
R
NICOBA
SINGARPET
CUDDALORE
KOZHIKODE
COCHIN
DIHANG DAMWE
BONGAIGAON
PURNEA
W
LIMBDI
G'PUR
20
00
M
ZERDA
0M
W
TEESTA
ARUN
XI PLAN
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
NR
13450MW
1000MW
ER
4600MW
WR
6450MW
1300MW
3200MW
SR
NER
NER
Network expansion in SR
SR GRID 1985
SR GRID 1995
Recent Network Expansion in SR






Commissioning of Talcher Kolar HVDC link
Commissioning of 2nd 500 MW pole at Gajuwaka
Commissioning of Vijayawada-NellurSriperambadur Link
Commissioning of N Sagar-Khamam link
Commissioning of RGM-HYD-KURNOOL-Gooty
Link
Commissioning of FSC at Cuddapa&Gooty
Recent Network Expansion in SR

Advantages





Increased flexibility in operation
Reduced losses
Reduced Disturbance
Increased loops
Increased Short-circuit levels
PROJECTS IN THE PIPELINE IN
SOUTHERN REGION
NEW PROJECTS ON THE ANVIL
KAIGA 3 & 4 TRANSMISSION SYSTEM
LINES : 413 Kms
COST ESTIMATE : 512 CRORES
 MYSORE-KOZHIKODE D/C LINE
 LILO OF KOLAR-SRIPERUMBADUR
AT MELAKOTTAIYUR (40KM)
 NARENDRA-DAVANGERE D/C LINE
SUB-STATION : 2 Nos. New
 NEW 400/220KV SUBSTATION AT
KOZHIKODE & MELAKOTTAIYUR
 2ND 315MVA TRANSFORMER AT
HIRIYUR S/S & VIJAYAWADA
 BAY EXTENSION AT NARENDRA,
DAVANGERE (KPTCL) & HIRIYUR.
NELAMANGALOA
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.)

TIRUNELVELI-UDUMALPET
D/C LINE WITH TWIN
MOOSE (300Km)
LILO OF BOTH CIRCUITS OF
MADURAI-TRIVANDRUM LINE
AT TIRUNELVELI ( 2 X 55 Km)
EDAMON-MUVATTUPUZHA
D/C LINE QUAD (150Km)




KARNATAKA
T N
KERALA
TIRUNELVELI-EDAMON 400KV D/C LINE (110Km).
MUVATTUPUZHA-TRICHUR 400KV D/C LINE WITH QUAD
CONDUCTORS (90Km)
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)
NEW PROJECTS ON THE ANVIL
NLC-TS-II EXPANSION TRANSMISSION SYSTEM
LINES : 467 Km.
COST ESTIMATE : 721 CRORES

2 NOS. 400KV S/C LINES FROM
NEYVELI-TS-II (EXISTING)
TO NLC TS-II (EXPAN) (8 KM).

NEYVELI-PUGALUR D/C LINE

PUGALUR-MADURAI D/C LINE
TN
 UDUMALPET-ARASUR D/C LINE
LILO OF NEYVELI-SRIPERUMBUDUR LINE AT PONDY.
LILO OF Khamam NSagar line at
Warangle
SUB-STATION 

NEW 400/220KV SUBSTATIONS AT PUGALUR, ARASUR &
PONDICHERRY Warangle
THANKYOU
For clarification you can contact me at
[email protected]
NO OF DISTURBANCES SINCE 1991
MAJOR AND MINOR
DISTURBANCES SINCE 1994
10
NUMBER OF DISTURBANCES -------->
9
8
7
6
SPS
5
4
MAJOR
3
2
1
2004-05
2003-04
2002-03
2001-02
2000-01
1999-00
1998-99
1997-98
1996-97
1995-96
1994-95
0
NO DISTURBANCES DESPITE LOSING ENTIRE SUPER
GENERATING PLANTS LIKE
YEAR ->
RAMAGUNDAM,VIJAYAWADA,KOTHAGUDEM, NORTH CHENNAI,
SHARAVATHY ETC
MINOR
IMPACT OF LINE ON SR SYSTEM LOSS
LINE NAME
INCREASE IN LOSS (MW)
VIJAYAWADA-SRISAILAM any one circuit
4
VIJAYAWADA-NELLORE any one circuit
10
N’SAGAR-CUDAPPA any one circuit
9
NELLUR-MADRAS
9
KOLAR-HOODY
any one circuit
any one circuit
5
KHAMMAM-MAMIDIPALLI any one circuit
7
KOLAR-HOSUR
any one circuit
8
NEYVELI-SALEM any one circuit
6
TRICHY-MADURAI any one circuit
7
FIXED SERIES CAPACITORS



Reduce impedance of the line
Increase the angular stability for a given
power
OR
Increase power transfer capability for
same level of angular stability
FSC ANALOGY
BANGALORE 400 KV RING MAIN(INTERIM)
FROM
GOOTY
KOLAR
NELAMANGALA
HOODY
400 KV RING MAIN
SOMANAHALLI
BANGALORE 400 KV RING MAIN(FINAL)
FROM
GOOTY
KOLAR
NELAMANGALA
HOODY
400 KV RING MAIN
SOMANAHALLI
HIGH SPEED INTER-TRIP SCHEME
AT KOLAR
TO TALCHER
KURNOOL
SOMYAZULA PALLI
ANANTPUR
GOOTY
CUDDAPAH
KOLAR
SOMANHALLI
SPBDR
HOODY
HOSUR
NLC II EXP
SALEM
KOZIKODE
NLC II
NLC -1 EXP.
INGUR
TRICHUR
PONDICHERY
TRICHY
UDUMALPET
MADURAI
THIRUVARUR
KARAIKUDI
KAIGA EVACUATION PROBLEM
SPS BASED SOLUTION
HUBLI
NAGJHERI
THESE LINES ARE TRIPPED IF
855 MW
>600 AMPS FOR 1SEC OR > 900
AMPS FOR 300 MSEC,
KODASHALLI
120 MW
400 KV LINE OPERATED AT 220 KV
PROBLEM OF OVERLOADING WHEN
HIGH GENERATION AT KALI COMPLEX
KAIGA
440 MW
SIRSI
GUTTUR
KADRA
150 MW
SPS AT RAICHUR
N’SAGAR
RAICHUR
CUDDAPAH
MUNIRABAD
GOOTY
DAVANGERE
HVDC LINES
FROM ER
HIRIYUR
SOMANAHALLY
KOLAR
NELAMANGALA
HOODY
400 KV GHANAPUR-KURNOOLGOOTY LINE
COMMISSIONING AND
ADVANTAGES
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COMMISSIONING
HIGHLIGHTS
GHANAPUR-KURNOOL(224 KMS) TEST CHARGED
FROM GHANAPUR ON 11/02/2005 AT 1140 HRS
SYNCHRONISED AT KURNOOL AT 1311 HRS
KURNOOL-GOOTY(84 KMS) TEST CHARGED FROM
GOOTY ON 11/02/2005 AT 1330 HRS AND
SYNCHRONISED AT KURNOOL AT 1520 HRS
PARAMETER
BEFORE
AFTER
GHP-KNL MW
NIL
130
KNL-GTY MW
NIL
180
HYD VOLT
407
412
GTY VOLT
412
417
ADVANTAGES OF THE LINE
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VITAL BACKBONE LINK
PROVIDES SUPPORT IN OUTAGE OF NORTH-SOUTH
NETWORK LINES FOR EG, 400 KV NUNNA-NELLORE-MADRAS,
N’SAGAR-CUDDAPAH ETC
LOSSES IN THE GRID ARE REDUCED BY 6 MW IN NORMAL
CONDITIONS AND BY AS MUCH AS 12 MW DURING LOAD
CHANGEOVERS
SC LEVELS OF KURNOOL IMPROVED FROM 2400 MVA TO
4500 MVA AFTER RGM-HYD-KNL-GTY WAS COMMISSIONED
INCREASED SC LEVELS AT GTY (3484 TO 4600 MVA) ALSO
IMPROVED STABILITY, LESS VOLTAGE EXCURSIONS AT
THESE STATIONS CAN BE EXPECTED
ALSO ANCHORS THE SRISAILAM SYSTEM WITH THE CTU
GRID
400 KV D/C GAZUWAKANUNNA LINE
COMMISSIONING AND
ADVANTAGES

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COMMISSIONING HIGHLIGHTS
GAZUWAKA-NUNNA-II CHARGED FROM
GAZUWAKA END AT 1626 ON 27/02/05 AND
SYNCHRONISED AT NUNNA AT 1652 HRS
GAZUWAKA-NUNNA-III CHARGED FROM
GAZUWAKA END AT 2303 ON 27/02/05 AND
SYNCHRONISED AT NUNNA AT 2315 HRS
PARAMETER
BEFORE
AFTER
CHARGING CKT
2
NNA-GZK-1
360
278
GZK VOLT
PARAMETER
404
BEFORE
407
AFTER
CHARGING CKT
3
NNA-GZK-1
260
220
GZK VOLT
411
414
ADVANTAGES OF THE LINE
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PLANNED FOR EVACUATION OF POWER FROM POLE 2 AT
GAZUWAKA
ALLEVIATED THE LOADING AND LOAD ANGLE ON THE S/C
400 KV GAZUWAKA-NUNNA LINE
IMPROVED THE EVACUATION OF SIMHADRI AS WELL AS
GAZUWAKA IMPORT
LOSSES REDUCED BY 8 MW WITH FULL GENERATION AT
SIMHADRI AND 500 MW IMPORT AT GAZUWAKA
IMPROVED STABILITY IN N.COASTAL AP AREA
RELIEVED LOADINGS ON GAZUWAKA-KAKINADA-VTS
CORRIDOR