Decoding Kotlin - Your guide to solving the mysterious in Kotlin.pptx
SRLDC Monthly Grid Report_Jul2023.pdf
1. CIN No. U40105DL2009GOI188682
ड क
ं ोलर ऑफ इं डया ल मटेड
(भारत सरकार का उ यम)
भूतपूव पावर स टम ऑपरेशन कारपोरेशन ल मटेड
GRID CONTROLLER OF INDIA LIMITED
(A Government of India Enterprise)
Erstwhile POWER SYSTEM OPERATION CORPORATION LIMITED
द ण े ीय लोड ड पेच क
े , 29, रेस कोस ास रोड, बगलूर – 560 009
SOUTHERN REGIONAL LOAD DESPATCH CENTRE, 29, RACE COURSE CROSS ROAD, BENGALURU – 560 009
संदभ. द. े.भा. े.क
े /एसओ/2023-24/D-01 िदनांक:17-अग त-2023
Ref No. SRLDC/SO/2023-24/D-01 Date: 17 August 2023
सेवा म / To,
सूची क
े अनुसार / As per list
वषय : द ण े ीय भार ेषण क
े क जुलाई 2023 माह क णाल चालन रपोट ।
Sub: System Operation Report of SRLDC for the month of July 2023
महोदय / Sir,
आपको सू चत कया जाता है क द ण े ीय भार ेषण क
े क जुलाई 2023 माह
क णाल चालन रपोट वेब साइट www.srldc.in पर उपल ध है ।
This is to inform you that System Operation Report of Southern Regional Load
Despatch Centre for the month of July 2023 is available in the website www.srldc.in.
आगे भी हर माह क णाल चालन रपोट इसी वेब साइट पर उपल ध रहेगी ।
The system operation report of every month will be available in the same website
in future also.
ध यवाद स हत / With Regards,
Yours Faithfully
(ट ी नवास / T Srinivas)
मु य महा बंधक / CGM
एसओ-II / SO-II
2. प्रणाली प्रचालन वििरण
SYSTEM OPERATION REPORT
SOUTHERN REGION 2023-24
SOUTHERN REGIONAL LOAD DESPATCH CENTRE
GRID CONTROLLER OF INDIA LIMITED
JULY 2023 BANGALORE
JULY 2023
3. Document Management Information
Document Effective Date: 17 August 2023
Classification
Modification History
Sr. No Description Date of Change Version No.
1 System Operation Report – July 2023 17 August 2023 00
Departmental Procedure Document Number
(Based on ISO 9001:2008) SRLDC/SO/D-01/SYSTEM OPERATION REPORT
Prepared By: Checked By Approved by: Issued by:
Ch.Manager (SO-2) DGM (SO-2) CGM (SO-2) MR (SRLDC)
11. 1) IMPORTANT EVENTS 01-07-2023
A)CHARGING/COMMISSIONING OF NEW GENERATING UNITS
SL.NO. STATE/ISGS STATION NAME TYPE CAPACITY (MW)
1 ISGS Tuticorin Wind 40.50
2 STATE Karnataka Wind 64.00
3 STATE Karnataka Solar 138.82
4 STATE Kerala Wind 0.25
5 STATE Kerala Solar 24.01
6 STATE Tamil Nadu Wind 19.50
7 STATE Tamil Nadu Solar 107.99
B)CHARGING/COMMISSIONING OF NEW TRANSMISSION LINES
SL.NO. OWNER kV Length (km) Conductor Type DATE
1 KPTCL 400 122.75 QUAD ACSR MOOSE 5-Jul-23
2 WKTL 765 167.72 HEXA ZEBRA 12-Jul-23
3 WKTL 765 167.72 HEXA ZEBRA 13-Jul-23
C)LILO/Re-Arrangement OF TRANSMISSION LINES
SL.NO. CONSTITUENT kV Length (km) Conductor Type DATE
NIL
D)CHARGING/COMMISSIONING OF NEW ICTs
SL.NO. CONSTITUENT ICT- NUMBER kV RATIO CAPACITY (MVA) DATE
1 PGCIL SR-2 3 400/220 500 13-Jul-23
E) CHARGING/COMMISSIONING OF NEW SUBSTATIONS
SL.NO. CONSTITUENT kV RATIO CAPACITY (MVA) DATE
NIL
F)CHARGING/COMMISSIONING OF REACTORS/STATCOM/FILTER BANK
SL.NO. OWNER Rating CAPACITY (MVAR) Element Name DATE
NIL
FREQUENCY (HZ) DATE FVI DATE
MAXIMUM 50.42 30-Jul-23 0.10 30-Jul-23
MINIMUM 49.58 03-Jul-23 0.02 28-Jul-23
AVERAGE 50.01 0.04
b) FREQUENCY DISTRIBUTION FOR THE MONTH
The frequency ranges as a percentage of time during the month
%TIME FREQUENCY < 49.9 49.90-50.05 >50.05
% 4.60 74.96 20.44
3) POWER SUPPLY POSITION FOR THE MONTH
AP TG KAR KER TN PONDY REGION
UNRESTRICTED PEAK
DEMAND(MW)
11619 12629 12359 3999 17774 492 54211
PEAK DEMAND MET
(MW)
11584 12610 12359 3999 17774 492 54211
UNRESTRICTED ENERGY
REQMT(MU)
6334 6407 6116 2281 10800 301 32239
ENERGY MET (MU) 6334 6489 6198 2307 10907 304 32540
400kV YTPS - Kalburgi - 2
LINE NAME & CKT NO.
766 KV Kurnool-Maheshwaram - 2
STATION NAME
STATION/LINE NAME
LINE NAME / LILO at
765 KV Kurnool-Maheshwaram - 1
400kV KOCHI
STATION NAME
REMARKS
1. 18.9 MW w.e.f 06.07.2023 00:00 Hrs.
2. 21.6 MW w.e.f 29.07.2023 00:00 Hrs
22. 4) RESERVOIR PARTICULARS
MDDL (M) FRL (M) 1st day Last day 1st day Last day
NILAGIRIS 0.00 0.00 0.00 0.00 135.00 529.00 582.71 149.80
IDUKKI 694.94 732.43 702.95 710.83 313.00 695.00 459.98 78.71
JALAPUT 818.39 838.40 822.87 824.54 89.00 115.00 205.48 78.87
N.SAGAR 149.30 179.90 158.40 156.97 94.00 48.00 72.17 49.87
SRISAILAM 243.84 270.70 246.43 258.47 25.00 258.00 192.21 1.55
SUPA 495.00 564.00 525.86 544.75 664.00 1632.00 868.48 240.07
LINGANAMAKKI 522.73 554.50 530.46 544.81 334.00 2048.00 1621.28 189.47
KAKKI 908.3 981.45 936.04 958.07 98.00 322.00 280.38 57.03
5) a) BRIEF DESCRIPTION OF GRID INCIDENCES:-
Outage
Duration
Date Time (Hrs) Date Time (Hrs) Time
1
1. 230kV NCTPS Unit-1,2&3
2. 230kV NCTPS ETPS line
3. 230kV NCTPS Kilpauk line
Tamil Nadu 02-07-2023 13:07 02-07-2023 14:04 57mins 504 0 GD-1
2
1. 220kV/110kV Ambewadi Transformer-1,2&3
2. 220kV Nagjheri Ambewadi Line-1&2
3. 220kV Ambewadi Narendra Line-1&2
4. 220kV Ambewadi Ponda Line-1&2
Karnataka 27-07-2023 09:41 27-07-2023 10:09 28mins 0 98 GD-1
3
1. 220kV BG Kothur Manuguru
2. 220kV BG Kothur Chintur
3. 220kV BG Kothur KTPS Stage-V
4. 220kV BG Kothur KTPS Stage-III
Telangana 27-07-2023 16:10 27-07-2023 21:27 5hrs 17mins 0 0 GD-1
b) BRIEF DESCRIPTION OF GRID DISTRUBANCES :-
Outage Duration
Date Time (Hrs) Date Time (Hrs) Time
1 1. 400kV Guddigudem Hinduja Line-1 Andhra Pradesh 03-07-2023 17:37 03-07-2023 18:33 54 mins 0 0 GI-2
2
1. 220kV Jurala Raichur_KA Line-2
2. 220kV Bus coupler at 220kV Jurala PH
Telangana 06-07-2023 00:34 06-07-2023 01:27 53 mins 0 0 GI-1
3
1. 400kV Kalpakka Gajuwaka Line-1&2
2. 400kV Kalpakka Simhari Line-2
3. 400kV kalpakka Vemagiri Line-1
4. 400kV/220kV Kalpakka ICT-3
Andhra Pradesh 11-07-2023 19:54 11-07-2023 23:00 3hrs 6mins 0 0 GI-2
4 1. 400kV/230kV ICT-5 at Alamathy Tamil Nadu 27-07-2023 07:12 27-07-2023 09:46 2hr 34mins 0 0 GI-2
Sl. No. CONSTITUENTS
Installed as on
31-03-2022
(MVAr)
Additional
requirement
during 2022-23
(MVAr)
Actual Addition
upto 31-03-
2023 (MVAr)
Balance to be
installed
(MVAr)
1 APTRANSCO 5533.700 544.800 31.600 513.200
2 TSTRANSCO 6979.910 2463.520 32.626 2430.894
3 KPTCL 8762.503 162.964 342.768 0.000
4 KSEB 1027.000 0.000 0.000 0.000
5 TNEB 4243.610 48.000 48.000 0.000
6 PONDY 32.400 0.000 0.000 0.000
7 SOUTHERN REGION 26579.123 3219.284 454.994 2944.094
* As per details received from SRPC vide letter dt. 14/06/2023
ENERGY (MU's)
STORAGE
Outage
Complete Outage of 220kV/11kV BG Kothur LIS SS of TSTRANSCO: As per the reports submitted, the triggering incident was
tripping of all 220kV connected lines at 220kV/11kV BG Kothur LIS SS on CTD operation due to DC supply failure. This resulted in
complete outage of 220kV/11kV BG Kothur LIS SS.
Tripping of 400kV Bus-1 of 400kV Hinduja Generating station: As per the reports submitted, the triggering incident was B-N fault
in 400kV Guddigudem Hinduja line-1. At Hinduja end, the main breaker failed to open causing LBB to operate and all the main
breakers connected to 400kV Bus-1 tripped.
Event
(As reported)
C) CAPACITOR DETAILS
ELEMENT NAME
Revival
PROGRESSIVEINFLOW (MU's)
Complete Outage of 230kV NCTPS Stage-1 Generating Station of TANGEDCO: As per the reports submitted, the triggering
incident was tripping of 230kV NCTPS ETPS line and 230kV NCTPS Kilapuk line on faults at 13:07hrs and 13:09hrs respectively.
Tripping of these lines led to tripping of NCTPS Unit-1,2 & 3 on over-frequency protection. This led to a complete outage of the
230kV NCTPS Stage-1 Generating Station.
Complete Outage of 220kV/110kV Ambewadi SS of KPTCL: Duirng antecedent conditions, all 220kV elements were connected to
220kV Bus-1 at 220kV/110kV Ambewadi SS. As per the reports submitted, the triggering incident was B-N fault in 220kV Nagjheri
Ambewadi line-2 and the line tripped. Because of this, 220kV Ambewadi Nagjheri line-1 got overloaded and caused the B-phase
bus jumper connected to the line to fail. This resulted in a B-phase bus fault causing BBP to operate and all the elements connected
to the 220kV Bus tripped. This led to a complete outage of 220kV/110kV Ambewadi SS.
PROGRESSIVE
ENERGY USAGE (MU's)
Owner /
Agency
Tripping of 220kV Bus-2 of 220kV Upper Jurala PH of TSGENCO: During antecedent conditions, there was no generation at
220kV Upper Jurala PH. As per the reports submitted, the triggering incident was R-N fault in 220kV Jurala Raichur_KA Line-2. At
the same time, the Bus Coupler tripped on over current protection. Tripping of only connected line and bus coupler resulted in de-
energization of 220kV Bus-2 at 220kV Upper Jurala PH.
NAME OF RESERVOIR
ELEMENT NAME
Outage
Owner / Agency
Revival
LEVEL (M)
S.NO.
Note:
Generation loss
(MW)
Tripping of 400kV Bus-3 and Bus-4 of 400kV/220kV Kalpakka SS of APTRANSCO: As per the reports submitted, the triggering
incident was R-phase CT failure in Bus coupler-2 bay of 400kV/220kv Kalpakka SS. Immediately, 400kV Bus-3 and Bus-4 BBP
operated and all the elements connected to the Bus-3 and Bus-4 tripped.
Tripping of 400kV Bus-1 of 400kV/230kV/110kV Alamathy SS of TANTRANSCO: 400kV/230kV/110kV Alamathy SS is operating
with one and half breaker scheme at 400kV level. As per the reports submitted, the triggering incident was bus-side B-phase CT
failure in 400kV/230kV ICT-5 at 400kV/230kV/110kV Alamathy SS. Immediately, 400kV Bus-1 BBP operated and the main breakers
connected to the 400kV Bus-1 tripped. This resulted in de-energisation of 400kV Bus-1 of 400kV/230kV/110kV Alamathy SS.
S.NO.
Event
(As reported)
Load loss (MW)
Category
as per CEA
Grid
Standards
Generation loss
(MW)
Category as
per CEA
Grid
Standards
Load loss (MW)