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POWER GRID CORPORATION OF INDIA LTD. GRID EVENTS AND ISSUES. in 3 rd SRPC MEETING 19 TH FEBRUARY 2007 BANGALORE. SOUTHERN REGIONAL LOAD DESPATCH CENTRE. ISSUES. 3.0 COMPUTATION OF TALCHER STPS-II INJECTION 5.0 AMC FOR SCADA-EMS SYSTEM UNDER SR ULDC SCHEME - PowerPoint PPT Presentation
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POWER GRID CORPORATION OF INDIA LTD
SOUTHERN REGIONAL LOAD DESPATCH CENTRE
in
3rd SRPC MEETING
19TH FEBRUARY 2007
BANGALORE
GRID EVENTS AND ISSUES
ISSUES
3.0 COMPUTATION OF TALCHER STPS-II INJECTION
5.0 AMC FOR SCADA-EMS SYSTEM UNDER SR ULDC SCHEME
6.0 WIDE BAND CONNECTIVITY OF PUDUCHERRY
8.0 BACKUP TRANSMISSION SCHEME FOR EVACUATION OF
TALCHER-II GENERATION
10.0 CONCURRENCE FOR AUGMENTATION OF EXISTING ULDC WIDE
BAND NETWORK FOR ENSURING DATA REDUNDANCY
14.0 11TH PLAN CENTRAL SECTOR THERMAL POWER PROJECTS
FOR SR
15.0 OPERATION OF TALCHER-KOLAR HVDC TRANSMISSION
SYSTEM IN GROUND RETURN MODE
16.0 REGIONAL TRANSMISSION SCHEMES FOR EXECUTION BY
POWERGRID
ISSUES
18.0 STATUS OF REGIONAL TRANSMISSION SCHEMES
18.1 UPGRADATION TO 400KV LEVEL OF OPERATION OF KAIGA-
GUTTUR D/C LINE
18.2 SHIFTING OF ONE 315 MVA, 400/220 KV TRANSFORMER AT
TRIVANDRUM
19.0 HANDING OVER OF 220KV KODIKURUCHI-EDAMON LINE
REQUIRED FOR CONSTRUCTION OF 400KV TIRUNELVELI- EDAMON
LINE UNDER KUDUNKULAM EVACUATION SYSTEM
20.0 COMPUTATION OF UI EXCHANGES BETWEEN ER-SR
21.0 SPECIAL PROTECTION SCHEME(SPS) FOR 2X1000 MW
KUDANKULAM ATOMIC POWER PROJECT
23.0 PUMP MODE OPERATION OF KADAMPARAI
ISSUES
25.0 EVACUATION SCHEMES FOR NEW CENTRAL GENERATING
STATIONS
26.0 TERMINATION OF TIRUNELVELI-EDAMON 400KV CIRCUIT
UNDER KUDANKULAM EVACUATION SCHEME AT EDAMON
28.0 REVISED UNIT TRIPPING SCHEME UNDER HVDC POLE
OUTAGES AT TALCHER STAGE-II
29.0 PREPONEMENT OF COMMERCIAL OPERATION OF PGCIL
TRANSMISSION ELEMENTS
30.0 GRID OPERATION
30.1 LOW FREQUENCY OPERATION
30.4 SCHEDULING OF KAYAMKULAM
32.0 CLOSING OF 220KV BALIMELA-UPPER SILERU S/C LINE
29.1.i 29.1.ii
SCM 23rd AGENDA
0
10
20
30
40
50
60
70
80
90
% O
F T
IME
---
>
Aug-06 Sep-06 Oct-06 (upto 20th)
DATE --->
<49.0HZ <49.5HZ <50.0HZ
FREQUENCY SPECTRUM FROM AUGUST 06 TO OCT 06 (UPTO 20TH OCT 06)
< 49.0 HZ < 49.5 HZ < 50.0 HZ 49 - 50.5 HZ >50.2HZ >50.5 HZ
Aug-06 0.37 6.93 34.82 99.22 22.75 0.41
Sep-06 1.38 29.62 63.95 98.61 12.27 0.02
Oct-06 (upto 20th) 10.54 44.74 83.42 89.47 2.66 0.02
Date: 17th October 2006
PRESS RELEASE
CERC directs PowerGrid to ensure grid stability
1. In order to take action for violating the Indian Electricity Grid Code (IEGC) by drawing electricity in excess of their schedule drawal, the Central Electricity Regulatory Commission (CERC) has directed PowerGrid to furnish the list of States and their quantum of overdrawals in the time-blocks when the frequency in the extended Central Grid was below 49.0 Hz during the period 9th to 15th October 2006.
2. The Commission has further directed all the RLDCs to keep a strict watch over the Grid Code violations, which can possibly endanger the grid stability and promptly inform the Commission about the defaulters with appropriate recommendation regarding remedial action.
3. The maintenance of satisfactory grid frequency has assumed added importance after synchronization of Northern Regional Grid with Central Grid comprising Western, Eastern and North-Eastern Regional Grids. In this context, the IEGC requires that the various beneficiary States shall always endeavor to restrict their net drawal from the grid to their respective drawal schedules, whenever the system frequency is below 49.5 Hz and when the frequency falls below 49.0 Hz, the requisite load shedding shall be carried out by the concerned State to curtail its over drawal.
S. K. ChatterjeeAssistant Secretary
STATE
No. of Time Blocks for which State
overdrew below 49 Hz.
MWH Overdrawal below 49 Hz
Average MW overdrawn
below 49 Hz
TAMILNADU 110 7146 260
KARNATAKA 70 3351 191
ANDHRA PRADESH 53 1782 134
PUDUCHERRY 109 1439 53
GOA 86 314 15
KERALA 0 0 0
Summary of ODs at Freq. LT 49 HZ. During the week 09-10-06 TO 15-10-06
STATE
No. of Time Blocks for which State
overdrew below 49 Hz.
MWH Overdrawal below 49 Hz
Average MW overdrawn
below 49 Hz
TAMILNADU 108 2976 110
KARNATAKA 105 2856 109
ANDHRA PRADESH 52 1663 128
PUDUCHERRY 139 1101 32
GOA 107 458 17
KERALA 19 254 53
Summary of ODs at Freq. LT 49 HZ. During the week 16-10-06 TO 22-10-06
Message Type Brief Details
Type A Caution Message when constituent overdraws at frequency <49.2 Hz. (issued in line with IEGC clause 6.4.4)
Type B Violation Message when constituent overdraws at frequency <49 Hz. (issued in line with IEGC clause 6.4.4)
Type C Violation Message when constituent continues to overdraw at frequency <49.0 Hz., in spite of RLDC’s instruction to terminate the over drawal(issued in line with IEGC clause 6.4.9 and Section 29(2) of I.E. Act 2003)
DETAILS OF GRID CODE VIOLATION MESSAGES ISSUED BY SRLDC TO CONSTITUENTS FOR THE MONTH OF OCTIOBER 2006DATE AVG %OFTIME %OFTIME
FRQ FREQUENCY FREQUENCYCAUTION VIOLATION VIOLATION CAUTION VIOLATION VIOLATION CAUTION VIOLATION VIOLATION CAUTION VIOLATION VIOLATION
<49.50hz <49.0hz MESSAGE"A" MESSAGE"B" MESSAGE"C" MESSAGE"A" MESSAGE"B" MESSAGE"C" MESSAGE"A" MESSAGE"B" MESSAGE"C" MESSAGE"A" MESSAGE"B" MESSAGE"C"
05.10.06 1 1
07.10.06 2 1
09.10.06 49.68 17.9 - - - - - - - - - - - - -
10.10.06 49.76 14.7 - - - - - - - - - - - - -
11.10.06 49.69 23.4 - 1 - - - - - 1 - - - - -
12.10.06 49.44 66.4 4.4 - - - 3 1 - 13 4 - - - -
13.10.06 49.15 93.9 21.7 3 - - 2 1 1 8 3 1 - - -
14.10.06 48.96 90.3 60.9 1 1 1 2 3 1 - - -
15.10.06 49.31 76.3 9.1 4 - - 2 - - 4 1 - - - -
16.10.06 49.2 79.1 29 6 3 - 5 2 1 4 1 - - - -
17.10.06 49.23 78.1 25.2 - - - 3 1 1 7 5 3 2 - -
18.10.06 49.16 86.3 31.5 3 8 4 4 3 1
19.10.06 49.2 96.5 15.6 3 6 3 1 1 2
20.10.06 49.19 97.4 11.8 4 2 5 1 1
22.10.06 49.6 33.9 0 2
23.10.06 49.38 68 5.4 8 2 1 1 1
24.10.06 49.38 72.7 2.3 4 1 3 1
25.10.06 49.26 81.3 13.8 7 1 7 4 3 1 1
26.10.06 49.1 95.5 34.1 12 3 13 4 7
60 11 1 60 23 18 47 21 5 4 0 0
ANDHRA PRADESH KARNATAKA TAMILNADU KERALA
SCHEDULE VS DRAWL OF SR STATES FOR 26/10/06
0
500
1000
1500
2000
2500
SC
HE
DU
LE
/DR
AW
AL
IN
MW
AP DRAWAL
AP SCHD
APTRANSCO
0
200
400
600
800
1000
1200
1400
1600
1800
SC
HE
DU
LE
/DR
AW
AL
IN
MW
KAR DRAWAL
KAR SCHDAPTRANSCOKPTCLKPTCL
48.5
49.0
49.5
50.0
50.5
51.0
51.5
0:0
0
1:0
0
2:0
0
3:0
0
4:0
0
5:0
0
6:0
0
7:0
0
8:0
0
9:0
0
10:0
0
11:0
0
12:0
0
13:0
0
14:0
0
15:0
0
16:0
0
17:0
0
18:0
0
19:0
0
20:0
0
21:0
0
22:0
0
23:0
0
0:0
0
FR
EQ
UE
NC
Y I
N H
Z
FREQUENCY
0
100
200
300
400
500
600
700
800
900
1000
SC
HE
DU
LE
/DR
AW
AL
IN
MW
KER DRAWAL
KER SCHDKSEB
0
500
1000
1500
2000
2500
SC
HE
DU
LE
/DR
AW
AL
IN
MW
TN DRAWAL
TN SCHDTNEB
FREQUENCY VERSES SR CONSTITUIENTS UI ON 26-10-2006 AT 1200HRS TO 1600 HRS
48.4
48.9
49.4
49.9
50.4
50.9
51.4
12:0
0
12:1
0
12:2
0
12:3
0
12:4
0
12:5
0
13:0
0
13:1
0
13:2
0
13:3
0
13:4
0
13:5
0
14:0
0
14:1
0
14:2
0
14:3
0
14:4
0
14:5
0
15:0
0
15:1
0
15:2
0
15:3
0
15:4
0
15:5
0
16:0
0
TIME
FR
EQ
UE
NC
Y
-600
-400
-200
0
200
400
600
800
FREQ
AP UI
KAR UI
KER UI
TN UI
APTRANSCO'S UI
KPTCL'S UI
TNEB'S UI
KSEB'S UI
FREQUENCY
CHART
STATE UI Vs FREQUENCY FOR 27-OCT-06
48.0
48.5
49.0
49.5
50.0
50.5
51.0
51.5
52.0
10:0
010
:10
10:2
010
:30
10:4
010
:50
11:0
011
:10
11:2
011
:30
11:4
011
:50
12:0
012
:10
12:2
012
:30
12:4
012
:50
13:0
013
:10
13:2
013
:30
13:4
013
:50
14:0
014
:10
14:2
014
:30
14:4
014
:50
15:0
015
:10
15:2
015
:30
15:4
015
:50
16:0
016
:10
16:2
016
:30
16:4
016
:50
17:0
0
TIME --->
FR
EQ
IN H
Z -
-->
-600
-500
-400
-300
-200
-100
0
100
200
300
400
UI I
N M
W -
-->
FREQ AP UI KAR UI KER UI TN UI
KAR UI
AP UI
TN UI
KER UI
FREQ
Computation of Talcher STPS-II Injection
Computation of Talcher STPS-II Injection
• The computation of actual injection of Talcher STPS-II for accounting purposes was done using SEMs installed on the out going feeders till 31.03.2006.
• Clause 7.4.6 of revised IEGC effective from 1st April 2006, provided actual injection of Talcher STPS-II shall be metered on 400 kV side of Generator transformers of Talcher STPS-II units.
• CEA has issued (installation and operation of meters) Regulations, 2006 to become effective from 22.03.06 (came to notice in May, 2005).
NTPC LETTER020806
SRLDC REPLY110806
NTPC LETTER070906
SRLDC REPLY111006
CEA REGUMINUTES OF1st COMM.
AMENDMENTS BY SRLDCIEGC
GT vis a vis Feedres Inj
Computation of UI Exchanges between
ER - SR
The methodology adopted by SRLDC for computation of UI between ER-SR during the period 03.04.06 to 27.08.06 was based on the following stipulations made in IEGC (effective from 1.4.2006):
7.6.1 The regional boundaries for scheduling, metering and UI accounting of inter-regional exchanges between ER & SR shall be as follows:
400 kV Bus couplers between Talcher-I and Talcher-II
400 kV East bus of Gazuwaka HVDC.
7.6.3. No attempt shall be made to split the inter-regional schedules into linkwise schedules (where two regions have two or more interconnections).
As regards to the UI computation of Talcher Stage II, the following provisions as stated in IEGC were also taken into consideration:
7.4.2. For a clear demarcation of responsibilities and minimal to-and-fro coordination, the scheduling of Talcher-II shall be coordinated by SRLDC, and the 400 kV AC bus-couplers between Talcher-I (2x500 MW) and Talcher-II (4x500 MW) shall be treated as the interface between ER and SR.
7.4.6. …… The difference between the actual injection of Talcher II and the dispatch schedule shall constitute the UI of Talcher-II, for which payments shall be made from/into the UI pool account of Southern region operated by SRLDC, but at the UI rate corresponding to ER repeat ER frequency. The energy accounting for Talcher-II STPS shall be carried out by SRLDC.
7.4.7. While the dispatch schedule for Talcher-II shall be as advised by SRLDC, the actual generation at Talcher-II may be varied by station operators depending on ER frequency, as long as the resulting UI does not cause a transmission constraint in ER. In case of a transmission constraint being caused in ER by the UI of Talcher-II, ERLDC may advise Talcher-II to curtail its UI under intimation to SRLDC. Any such advise shall be immediately complied with by Talcher-II.
Specific Issues related to UI exchange between SR & ER vis-à-vis
between Talcher Stage II to ER :
Any UI exchange is carried out with the consent of SRLDC/ERLDC
control rooms to move power mainly from surplus to deficit region
The direction and quantum of UI between would depend on the
generation level maintained by Talcher II - irrespective of regions status
Any UI exchange is carried out depending on the frequency of both the
regions and thereby resulting into positive differential UI
Talcher II may inject UI irrespective of the frequency relationship of the
two regions and thereby at times resulting into negative differential UI
Annexure-I
Any UI exchange gives equitable benefits to the constituents in both the
regions
Injection of UI by Talcher II if clubbed with SR to ER UI, may not result
in such equitable scenario
Annexure-II
It may therefore be seen that in view of the specific location of Talcher II vis-à-vis other ISGSs, the
UI computation in respect of Talcher II is required to be followed in a manner which would be based
on the IEGC provisions as stated above and at the same time it would not defeat the basic UI
philosophy which stipulates that the UI exchange between two agencies/ regions should benefit
both the parties.
In order to achieve this, whenever UI transactions are there in respect of Talcher II with ER, the UI
calculations have to be carried out as per the IEGC provisions (clause 7.4.6 ) i.e. at ER frequency.
However as per this clause, as the payment for this UI to Talcher II has to be made from the UI
pool account operated by SR, it is natural that SR UI pool must be suitably compensated by getting
the equivalent amount from the UI pool operated by ER.
Furthermore by following this methodology as no differential gets generated in SR/ER UI pool on
this account, there cannot be any sharing of accumulated differential UI. therefore the possible
viable approach within the framework of IEGC regulations could be:
--- to treat this transaction as a UI only between Talcher II and ER and
--- while accounting these amounts (as it is) these can be routed through the SR weekly UI
accounts
METHODOLOGY FOR ACCOUNTING OF UI BETWEEN TALCHER II AND ER
TALCHER STAGE II UI & ER AND SR FREQUENCY
-30.00
-20.00
-10.00
0.00
10.00
20.00
30.00
40.00
0000
-001
5
0100
-011
5
0200
-021
5
0300
-031
5
0400
-041
5
0500
-051
5
0600
-061
5
0700
-071
5
0800
-081
5
0900
-091
5
1000
-101
5
1100
-111
5
1200
-121
5
1300
-131
5
1400
-141
5
1500
-151
5
1600
-161
5
1700
-171
5
1800
-181
5
1900
-191
5
2000
-201
5
2100
-211
5
2200
-221
5
2300
-231
5
TIME BLOCK --->
EX
-BU
S I
N M
W -
--->
48.50
49.00
49.50
50.00
50.50
51.00
51.50
52.00
52.50
53.00
53.50
FR
EQ
UE
NC
Y I
N H
Z -
--->
UI SR FREQUENCY ER FREQUENCY 23-May-06 Tuesday
EASTERN REGION
Loss = 2.9 lakhs
Payable by ER RS. 4.3 Lakhs Receivable by SR Rs. 6.2 Lakhs
Negative Differential UI Rs.2.9 Lakhs
TALCHER STAGE II UI & ER AND SR FREQUENCY
-15.00
-10.00
-5.00
0.00
5.00
10.00
15.00
20.00
25.00
30.00
0000
-001
5
0100
-011
5
0200
-021
5
0300
-031
5
0400
-041
5
0500
-051
5
0600
-061
5
0700
-071
5
0800
-081
5
0900
-091
5
1000
-101
5
1100
-111
5
1200
-121
5
1300
-131
5
1400
-141
5
1500
-151
5
1600
-161
5
1700
-171
5
1800
-181
5
1900
-191
5
2000
-201
5
2100
-211
5
2200
-221
5
2300
-231
5
TIME BLOCK --->
EX
-BU
S I
N M
W -
--->
48.50
49.00
49.50
50.00
50.50
51.00
51.50
52.00
52.50
53.00
53.50
FR
EQ
UE
NC
Y I
N H
Z -
--->
UI SR FREQUENCY ER FREQUENCY 10-Jun-06
SaturdayEASTERN REGION
Loss = 3.8 lakhs
SR & ER FREQUENCY AND DIFFERENCE AMOUNT BETWEEN SR-ER UI RATES ON 14-10-2006
-6
-5.465
-4.93
-4.395
-3.86
-3.325
-2.79
-2.255
-1.72
-1.185
-0.65
-0.115
0.42
0.955
1.49
1 4 7 10 13 16 19 22 25 28 31 34 37 40 43 46 49 52 55 58 61 64 67 70 73 76 79 82 85 88 91 94
TIME BLOCKS
DIF
F. A
MO
UN
T B
ET
WE
EN
SR
-E
R U
I RA
TE
S
48.5
48.7
48.9
49.1
49.3
49.5
49.7
49.9
50.1
50.3
50.5
50.7
50.9
51.1
51.3
51.5
SR FREQUENCY
ER FREQUENCY
DIFFERENTIAL AMOUNT
-1.5 lakhs -48.7 lakhs
ERFreq = 49.6 HzUI Rate= Rs.3/
TalcherStage IIGen: 1600Schd: 1600
1600 MWSR
Talcher Stage I & II I/C
SR Freq = 49.16 HzUI Rate= Rs.5/
UI (SR to ER) 0 MW
0 MWER
0 MW UI (from SR to ER)
Annexure -ICASE – 1 UI from Talcher Stage II to ER when SR frequency < ER frequencyBase Case: Talcher Stage II UI =0 MW
Base Case +Talcher Stage II 50 MW UI (Talcher Stage 2 actual Generation = 1650 MW against Schd. of 1600 MW)
ERFreq = 49.6 HzUI Rate= Rs.3/
TalcherStage IIGen: 1650Schd: 1600
1600 MWSR
Talcher Stage I & II I/C
SR Freq = 49.16 HzUI Rate= Rs.5/
UI (SR to ER) 0 MW
50 MWER
0 MW UI (from SR to ER)
Issues
Considering the variable cost of Talcher Stage II as around 80 paisa it would be beneficial for Talcher Stage II to generate positive UI as the ER UI rate is more than its variable cost. For every unit of power exported to ER, Talcher Stage II would get a price of Rs 3/Unit.However if the UI by Talcher Stage II to ER is considered as UI from SR to ER, then it would be a case of –ve UI
For every unit of power exported , SR would expect a price of Rs 5/Unit while ER would be able to give a price of Rs 3/Unit only. Such transactions accumulated during that periods could cause commercial implications.
In order to address this issue ,the UI transactions can be considered between Talcher Stage II and ER, however the accounts can be routed through SR.
BACKUP TRANSMISSION SCHEME FOR EVACUATION OF TALCHER-II GENERATION
BEHRAMPUR
MENDHASAL
OPTION 1
400 KV TSTPP-II- MENDHASAL-BEHRAMPUR-GAZUWAKA.
400 KV TSTPP-II- MENDHASAL IS ORISSA GRIDCO LINE (YET TO BE DECIDED). HENCE LONG TERM STOA HAS TO BE SOUGHT.
STOA WOULD NOT BE LINE WISE BUT FOR ORISSA GRID.
STOA WOULD DEPEND ON THE LINE LOADING. CORRIDOR WOULD NOT BE USED, EXCEPT WHEN POLES ARE OUT
BEHRAMPUR
MENDHASAL
OPTION 2
400 KV TSTPP-II- BEHRAMPUR-GAZUWAKA.
SINCE NO GRIDCO LINE IS INVOLVED, THERE WOULD NOT BE A NEED FOR STOA. HENCE THIS OPTION WOULD BE PREFFERED
REGIONAL TRANSMISSION SCHEMES FOR EXECUTION BY POWERGRID
KRISHNAPATTINAM UMPP
D/C QUAD MOOSE
765 KV
HVDC B2B
TN UMPP
KRISHNAPATTINAM UMPP
D/C QUAD MOOSE
765 KV
HVDC B2B
TN UMPP
COMMENTS ON KRISHNAPATTINAM AND TN UMPP EVACUATION PLAN
• THE FOLLOWING 400 KV LINES WOULD BE STRESSED– CUDDAPAH-KOLAR-SOMANAHALLI– KOLAR - MELKOTTAIYUR– HOSUR-SALEM– RAICHUR EVACUATION BOTTLENECK IN CASE
OF 765 KV LINE TRIPPING– NUNNA-KHAMMAM-N’SAGAR– SRISAILAM-KURNOOL– NUNNA-NELLORE D/C EVACUATION WITH
VEMAGIRI
• HIGH VOLTAGES ARE ALSO A CAUSE OF CONCERN AND ADEQUATE REACTIVE ELEMENTS MAY HAVE TO BE PROVIDED
UMPP EVACUATION BASE CASE
TALCHER-KOLAR NIL
2500 MW EXPORT TO WR ON 765 KV
RAICHUR-SHOLAPUR
KRISHNAPATTINAM UMPP
D/C QUAD MOOSE
765 KV
HVDC B2B
TN UMPP
765 KV RING CONSISTING OF NELLORE, MELKOTTAIYUR, ARASUR, HIRIYUR AND RAICHUR
NAGARJUNA& ONGC PLANT
•CREATE ONE MORE 400 KV STATION NEAR CHENNAI FOR FULL FLEDGED RING MAIN
•400 KV STATION AT DB PURA NEAR BANGALORE AS NELAMANGALA IS TOO CONGESTED
SHIFTING OF ONE 315 MVA, 400/220 KV TRANSFORMER AT TRIVANDRUM
SHIFTING OF 3RD ICT FROM TRIVANDRUM TO MADAKKATHARA
• LOADING OF MADAKKATHARA ICTs ARE AROUND 200-250 MW EACH
• L/C ON ONE ICT TYPICALLY OVERLOADS OTHER ICT– LOAD REARRANGEMENTS AND TRIPPING OF
ONE CKT OF UDUMALPET IS DONE TO CONTROL THE OVERLOAD.
• LOADING OF ABOUT 600 MW IS SEEN IN 2012 CASE
• SHIFTING OF THE ICT IS ADVISABLE
TRIVANDRUM ICTs & TRICHUR ICTs Flows on 05-02-2007
0
100
200
300
400
500
600
00:0
0
01:0
0
02:0
0
03:0
0
04:0
0
05:0
0
06:0
0
07:0
0
08:0
0
09:0
0
10:0
0
11:0
0
12:0
0
13:0
0
14:0
0
15:0
0
16:0
0
17:0
0
18:0
0
19:0
0
20:0
0
21:0
0
22:0
0
23:0
0
00:0
0
Time (In Hrs)--->
MW
--->
TRIV-ICT
TRICH-ICT
MADAKKATHARA ICT TOTAL MW
TRIVANDRUM ICT TOTAL MW
ADVANCED COMMISSIONING OF NARENDRA-GUTTUR D/C
CHARGING OF KAIGA GUTTUR TO 400 KV
PONDA(Goa)
(MAHARASHTRA)
CHIKKODIKARNATAKA
BELGAUM
NARENDRA 220
KADRA
KAIGA
AMBEWADI
XELDEM(GOA)
NAGJHARI
KODASALLI
HUBLI
M.L.PURA
KOLHAPUR
175 KMS
70 KMS
63 KMS
2X100 MVA 220/110
2X100 MVA 220/110
TATA DIESEL80 MW, 593 PS VAR COST
GHATAPRABHA ( 20 MW)
KUDUCHI
TO ALMATTI BAGALKOT,-BBWADI,-LINGSUGUR – Raichur TPS
HAVERI
ADVANTAGES OF NARENDRA GUTTUR LINE
• KAIGA + KALI EVACUATION BECOMES MORE STABLE
• LOOP GETS ADDED AT 400 KV LEVEL• SR GRID LOSSES GET REDUCED BY 6-10
MW• FLOW GETS SHARED BETWEEN KAIGA-
GUTTUR AND NARENDRA-GUTTUR– EVACUATION OF UNIT 3 AND 4
• IMPORT FROM MAHARASHTRA THROUGH 220 KV D/C KOLHAPUR-BELGAUM IS MORE STABLE
CLOSING OF 220KV BALIMELA-UPPER SILERU S/C LINE
GRID MAP OF GRIDCO
GRID MAP OFAP
USL-BLM LETTER
STUDY FOREVACUATION
