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POWER SYSTEM OPERATION CORPORATION LIMITEDSOUTHERN REGIONAL LOAD DESPATCH CENTER
BANGALORE 1
15th Tcc / 16th srpc meeting
Venue: GOA
Date: 29th / 30th April 2011
NEW PROJECTS OF NTPC, NLC, NPCIL & UMPP
SL NO 1 OF TCC
NTPC SIMHADRI STAGE - II(2 X 500)
SL NO 1.1 OF TCC
NTPC SIMHADRI STAGE - II• MoP conveyed the allocation of Power from Simhadri Stage II to beneficiary
states.
• Units I test synchronised in March 2011 & COD yet to be declared.
• Units II likely to be commissioned by June 2011
• Scheduling of Simhadri Stage II will be done by SRLDC w.e.f COD
• Data / Speech communication to SRLDC is made operational & under testing
• Till the date of COD of Simhadri Stage – II
• Simhadri shall regulate infirm power injection as per SRLDC instruction on
real time basis
NPCIL KUDANKULAM STAGE 1 (2 X 1000)
SL NO 1.3 OF TCC
NPCIL–KUDANKULAM STAGE I• NPCIL informed that for Kudankulam all equipment's are in place at site and the
commissioning activities are in full flow.
• Units I & II are likely to be commissioned by June 2011 & March 2012.
• In Special TCC held on 3rd Jan 2011. NPCIL Informed Reactor of 1st Unit was likely to go critical
by March 2011and generation was expected from April 2011
• SPS & Speech facilities to be provided
- Permission given by TN for placing MUX
- SRTS -2 to confirm the status / probable date of completion
• SEM & SCADA Data Validation to be done by NPCIL – Observed error of 16kV between Field
and Scada data at Kudankulam bus
• Commissioning of Bus Reactor at Kudankulam is essential for ensuring availability of reliable
start up supply.
• The parallel closing of second line between Tirunelvelli – Kudankulam will be at 410 kV and
Opened at 425 kV
SRPC TN REPLY
VALLUR JOINT VENTURE BETWEEN NTPC & TNEB ( 3 X 500)
SL NO 1.4 OF TCC
VALLUR JOINT VENTURE BETWEEN NTPC & TNEB (3X500)
• Unit sizes of 500 MW.
• TANTRANSO had informed that commissioning of the 1st unit could be delayed
by 2-3 months because of issues regarding the coal handling plant.
• MoP vide letter dated 28th September 2010 had communicated the allocations
to the beneficiaries states as given:Allocation:AP: 178.8 MWKAR: 111.5 MWKER: 49.9 MWTN: 1040.6 MWPondy: 6.7 MWUnallocated: 112.5 MW
Nellore – Allmatty D/C Study Results
Nellore – Allmatty D/C Study Report
JOINT VENTURE OF NLC& TNEB AT TUTICORN (2 X 500)
SL NO 1.5 OF TCC
Joint Venture of NLC & TNEB at Tuticorin• NLC had informed that orders had been placed on M/s BHEL and civil works had
commenced.
• MoP had communicated allocations to the beneficiary States.
• NLC had informed that with the action plan given by M/s BHEL, Units I & II were
scheduled to be commissioned during August 2012 & October 2012
respectively.
KAYAMKULAM 1950 MW/ 1950 MW
SL NO 1.6 OF TCC
KAYAMKULAM 1950 MW/1050 MW PLANT• Feasibility report for the project had been finalized by NTPC.
• Pipeline from Kochi Terminal to Kayamkulam was being developed by M/s GAIL.
• GoI had circulated drafts on price pooling mechanism. Price of LNG was linked with
prices of crude oil. The unit rate was likely to be Rs. 3.75 - Rs. 4.00 per unit in the
present scenario where crude oil prices ranging between $ 70-80/barrel.
• Requisition from KPTCL & KSEB received by NTPC.
• Conditional consent communicated to NTPC by APTRANSCO.
• TANTRANSCO & Puducherry – Presently price pooling mechanism not very clear,
would be interested in case tariff was advantageous.
NLC NEW THERMAL POWER PROJECT(2X 500)
SL NO 1.7 OF TCC
Neyveli New Thermal Power Project (2x500 MW)• Director (Power ),NLC had informed that the project was likely to take 40 months after PIB
approval and was targeted to be commissioned in 2014. PIB approval was likely in the next
six months.
• MOP vide letter dated 29th October 2010 had communicated allocation of power from this
project
• PGCIL informed NLC had applied for connectivity. NLC had been requested to apply for LTA
also to take up planning of evacuation scheme
• Tamil Nadu had informed that this being a replacement project since Tamil Nadu was
loosing 600 MW , entire 1000 MW from the new project to be allocated to them.
Neyveli New Thermal Power Project (2x500 MW)
• TNEB’s share was 100% in Neyveli Stage 1.
• Old plant was commissioned in 1962.
• Present Evacuation Plan is at 230/110kV
• Designed for evacuating 600MW.
• Since 2 x 500MW plant is coming up, inter connection to 400kV is desirable.
• Wheeling issue
KRISHNAPATTANAM UMPP(3960 MW)
SL NO 1.8 OF TCC
KRISHNAPATTANAM UMPP(3960 MW)
KRISHNAPATTINAM UMPP
400kV D/C QUAD MOOSE
765 KV
TN UMPP
Cochin
Madugiri
KRISHNAPATTANAM UMPP(3960 MW)• The unit configuration had been finalized as 6 x 660 MW and CERC had been
approached for revised configuration, clearance awaited.
• CMD, APTRANSCO had informed that about Rs. 300 Crores had already been
invested and progress was their in all the fronts.
• Project is being developed by Reliance Power Limited.
• The plant may come up beyond 2014.
Schedule Date of Commissioning of the Central Sector/JV ProjectsStation Unit Installed Capacity
(MW)Original date of commissioning Revised date of
commissioning
Simhadri Stage - II I,II 500, 500 11th Plan Mar-11, June-11
Kayamkulam I, II & III 1050/1950 11th Plan 12th Plan
Vallur JV with TNEB IIIIII
500+500+500+
11th Plan Oct-11Dec-11Dec-12
Neyveli – II (Exp) III
250250
2006 – 07 Mar-11Jun-11
Tuticorin JV with TNEB I II
500500
11th Plan Aug-12Oct-12
Sirkalli TPP I,II,III 3 X 660 52 Months, 58 Months,64 Months from GOI approval
Kaiga IV 220 Sep – 07 Nov-10
Kudankulam Stage – I III
10001000
Dec – 07Dec – 08
Jun-11Mar-12
Kalpakkam (PFBR) I 500 2010 – 11 Mar-12
Krishnapattanam IVI
4000 11th Plan June 2013Feb 2015
Cheyyur 4000 2015 – 17 2015-17
PAYMENT OF CHARGES OF TNEB OWNED TRANSFORMERS AT SRIPERUMBUDUR & SALEM
SL NO 2 OF TCC
1. Discussed in 13th Commercial Sub-Committee meeting held on 19th July 10
whereas PCKL had agreed to put up a draft computation for the tariff.
2. In the 14th SRPC meeting, it was noted that TCC had agreed that the proposal
prepared by PCKL be deliberated in details by the Special Commercial Committee
before being put up to TCC/SRPC.
3. Matter was further deliberated in the Special Commercial Sub-Committee meeting
held on 29th Sep 10 wherein it was noted that proposal from PCKL was awaited,
while APTRANSCO had also submitted their proposal on the issue.
4. Outcome of the 14th commercial Sub – Committee meeting
• TNEB would compute the charges for the period from 1.4.1991 to 31.12.2011 in line with
norms prevailed during the period and the Commercial Sub-Committee would validate
the same for subsequent approval of TCC/SRPC.
PAYMENT OF CHARGES OF TNEB OWNED Xmers AT SRIPERUMBUDUR & SALEM
MAINTENANCE OF MARCONI MAKE SDH EQUIPMENT
SL NO 3 OF TCC
1. TN to Expedite Commissioning of their system to Coincide with SR2,
PowerGrid Plan
MAINTENANCE OF MARCONI MAKE SDH EQUIPMENT
Microwave Details
Wide band Failure
Minutes 12th Jan 10
EXISTING WIDEBAND NETWORK UNDER SOUTHERN REGION ULDC PROJECT
CORPORATE LD&C DEPT.
B’LORE RSCC
CHENNAI SLDC
Karnool
Muddanur
Gooty
Ramagundam
Vijayawada Sub-LDC
PeddapallyDurshed
Jammikunta
Warangal Sub-LDCGazuwaka
Visakapantam SWS
Kakinada
Bommur
Bhimadole
VTPS
N’ Sagar PH
Tallapally
Srisailam PH
Srisailam LBPH
Shapur NagarCh. GuttaVidyut Soudha
Hydearbad SLDC (400)
Chinakam Pally Sub-LDC (Cuddaph)
Ananthapur
Somayajula Pally
SomanhallyKumbalagodi
Salem 400Salem 230
Sriperabudur
S.P. Koil
Neyveli-IPanruti
Pondicherry SCC
Villianur
ChidambaramMyladuthurai
Thiruvarur
Erode Sub-LDC
Kovilvenni
KaraikudiSivaganga
Madurai Sub-LDC
Madurai 400
Pudukottai ThirumayamOrthanaduAdankottai
PongalurUdumalpet
Trichy 230Ingur
Kannur Sub-LDC
Kozhokode B
Chalakudy
Pallom
KundaraParipally
Trivandrum North
Vidyuthi Bhavanam Sub-LDC
Kayamkulam
Kalamassery SLDCVaikkam
Trichur North
KPTCL SLDC
Hubli Sub-LDC
Davanger Sub-LDC
F. O. Link (APTRANSCO)M.W. Link (ULDC)
RSCCSLDCSub-LDC/ SCCRTU / Wideband locationRepeater StationF. O. Link (ULDC)
M.W. Link (TNEB)
VSAT link (KPTCL)
Ghanapur
C.S. links (ULDC)Constituents links (ULDC)APTRANSCO links
Colour Code
LEGENDS:
11147
63
6687
17
9912
46
13436
20
76
58
9857
302
181
19
64
140
156
30
111
93
13031
26
147
104
217
Proposed Solution for replacement of Existing Microwave Links installed under Southern Region ULDC Project
Visakapantam SWS
B’LORE RSCC
CHENNAI SLDC
Karnool
Muddanur
Gooty
Ramagundam
Vijayawada Sub-LDC
Durshed
Warangal Sub-LDC
Gazuwaka
Kakinada
Bommur
BhimadoleVTPS
N’ Sagar PH
Tallapally
Srisailam PHSrisailam LBPH
Shapur NagarCh. Gutta
Vidyut Soudha
Hyderabad SLDC (400)
Chinakam Pally Sub-LDC (Cuddaph)
Ananthapur
Somayajula Pally
Somanhally
Salem 400
Salem 230
Sriperabudur
S.P. Koil
Neyveli-IPondicherry SCC
Villianur
Myladuthurai
Thiruvarur
Erode Sub-LDC
KaraikudiMadurai Sub-LDC
Madurai 400
Pudukottai
Udumalpet Trichy 230
Ingur
Kannur Sub-LDC
Kozhikode B
Chalakudy
Pallom
Kundara
Trivandrum North
Vidyuthi Bhavanam Sub-LDC
Kayamkulam
Kalamassery SLDC
Trichur North
KPTCL SLDC
Hubli Sub-LDC
Davanger Sub-LDC
Ghanapur
11
147
63
66
8717
99
12
46
13436
20
76
58
98
57
302
181
19
64
140
156
30
111
93
13031
26
147
104
2178787
Total OPGW = 1214kmsTotal UGFO = 210 kms
RSCC
SLDC
Sub-LDC/ SCCRTU / Wideband location
LEGEND
Proposed UGFO link
Proposed OPGW link
Proposed Radio link
F.O Link (ULDC)F.O. Link (APTRANSCO)OPGW Link (existing)
VSAT LINK (KPTCL)
Constraints In SR System
SL NO 4 OF TCC
MULTI-CIRCUIT TOWER ON 220 KV EDAMON-KAYATHAR CORRIDOR
EDAMON-TNVL WOULD BE AT 220 KV TO BEGIN WITH
TIRUNELVELI
KOODANKULAMTRIVANDRUM
EDAMON
COCHIN
THRISSUR
MADURAI
UDUMALPET
ARASUR NLY-EXP
NEYVELI
BAHOOR
PUGALUR
TRICHY
SALEM
HOSUR
MYSORE
SP-BUDUR
KALIVENDAPATTU
ALMATHI
CHITOOR
KOLAR
S’HALLI
NLMNG
HOODY
TRANSMISSION SYSTEMS IN SR IN PROGRESS
KARAIKUDI
HASSAN
KOZHIKODE
NLY2-EXP
KOODANKULAM
UNIT 1- JUN 11
UNIT 2- MAR 12
NLY-2 EXPN
UNIT1- MAR 11
UNIT-2 JUN 11
400 KV D/C MYSORE-KOZHIKODE
a) Reduce losses by ~ 8MW
b) Enhance margin across constrained S1-S2 corridor.
c) Enhanced reliability for N. Kerala (an issue at present)
d) Relief for Thrissur(Madakathara) transformer ( Fully loaded)
e) Relief on loading of Idukki-LP-Madakathana 220 KV lines
g) Enhanced transfer capability to Kerala, opportunity to conserve hydro.
400 KV D/C MYSORE-KOZHIKODE STUDY
MYSORE
KOZHIKODE
HOOTAGALLY
TK HALLI
KANAKPURAHORAHALLI
SOMANAHALLI
KADAKOLA
KANIYAMPET
AREACODE
NALLALAM
KANJIRODE
TRICHUR
1. WITH OUT KOZHIKODE-MYSORE D/C2. GEN AT IDDUKKI ABOUT 520MW
NELAMANGALA 173 MWx2
173 MW
111 MW
106 MW
48 MW
104 MW
191 MW13 MW
227x2 MW
72 MW
105 MW
139 MW
Losses 830.4MW
Coal Stock Position
SL NO 5 OF TCC
Normative Vs DCDC vs Actual
Coal Stock Position( As on 27-Apr-11)
DAILY LINKAGE IN 1000
OF TONNESACTUAL IN 1000 OF
TONNES IN DAYS
APTRANSCO
VTS 26 127 5
KTS 18.9 301 16
RYTPS 16.5 97 6
SIMHADRI 23.1 164 7
KAKATIYA 5.8 109 19
ISGS
RSTPS 38.1 535 14
TALCHER 52 417 8
KPCL
RTPS 25.1 404 16
BTPS 8.7 52 6
TNEB
ETPS 6.9 14 2
MTPS 13.6 73 5
NCTPS 10.4 59 6
TTPS 18.5 49 3
Issues Related to Transmission Schemes Agreed in Standing Committee
SL NO 6 OF TCC
HOSUR
KOLAR
SOMANAHALLI
ELECTRONIC CITY
HOSUR-ELECTRONIC CITY 400KV D/C TRANSMISSIN LINE400kV lines
YERANDAHALLI
In standing committee meeting it is proposed to Utilise the ROW of 220kV Yerandahalli-Hosur line for 400kV Hosur-Electronic City D/C line
KPTCL Director (Transmission) had stated that KPTCL would examine some alternate transmission system for Electronic city.
HOSUR
KOLAR
SOMANAHALLI
ELECTRONIC CITY
HOSUR-ELECTRONIC CITY 400KV D/C TRANSMISSIN LINE400kV lines
YERANDAHALLI
In 28th standing committee meeting it is proposed to Utilise the ROW of 220kV Yerandahalli-Hosur line for 400kV Hosur-Electronic City D/C line
KPTCL Director (Transmission) had stated that KPTCL would examine some alternate transmission system for Electronic city to avoid ROW problems
KPTCL had been requested to explore possibility of establishing 400kV S/S at their existing 220kV S/S at Yerandahalli to solve the ROW problem.
400 KV D/C HOSUR-ELECTONIC CITY
• PGCIL to do joint survey with KPTCL, if necessary latest stringing
methodology would be adopted.
• KPTCL informed that critical RoW issues existed at two locations.
• CE (Trans.) Bangalore had been nominated from KPTCL side for
joint survey.
• APTRANSCO had requested to furnish cost implication on account
of adoption of unconventional technology.
Transmission Capability of HVDC Back to Back stations
SL NO 7 OF TCC
Transmission Capability of HVDC Back to Back stations
• In 57th OCCM of SRPC, SRLDC had clarified that it would not be able to
certify the past cases as PDO was in service during that period and
constituents had to take a decision in this regard
ULDC Requirements Beyond 2011
SL NO 8 OF TCC
LTSA FOR SR –ULDC SCHEME• Maintenance for comprehensive software and hardware maintenance support
for EMS/SCADA system supplied under SR-ULDC scheme with two year
extension is going to expire on 31-12-2011.
• As the upgradation process will take quite a time, as per the request of
constituents SRLDC has obtained the quote from M/s GE for extending the
AMC by one year with a provision for one more year for further extension if
required.
• SRLDC seeks approval of constituents to go ahead with the proposal with
negotiation as the rate quoted by M/s. GE was 30% (Approx) higher than the
present AMC charges
AMC CHARGES OF SR ULDC SCHEME FOR THE PRESENT AND PROPOSED BY M/S GE
Sl.No. Constituent Present Total AMC in Rs. Proposed Total AMC in Rs. 1 RSCC 1,67,38,566 2,23,21,282 2 APTRANSCO 1,73,11,346 2,30,81,561 3 TNEB 1,48,71,391 1,98,26,621 4 KPTCL 1,35,55,653 1,80,80,357 5 KSEB 1,47,70,742 1,96,95,948 6 PUDUCHERRY 1,18,34,589 1,57,87,645
PROPOSED AMC COMBINED ON SHORE AND OFF SHORE
ONSHORE OFFSHORE TOTAL TOTAL
Per Annum Per Annum Per Annum Per AnnumSl.No Constituent INR INR INR INR
1 RSCCSoftware Support for RSCC 4,977,295.00 4,324,307.54 9,301,602.54 12,499,918.00 Hardware Support for RSCC 3,979,507.00 3,457,456.14 7,436,963.14 9,821,364.00 Sub-Total 8,956,802.00 7,781,763.68 16,738,565.68 22,321,282.00
2 APTRANSCOSoftware Support for APSEB 5,147,620.00 4,472,299.79 9,619,919.79 12,925,674.00 Hardware Support for APSEB 4,115,687.00 3,575,738.88 7,691,425.88 10,155,887.00 Sub-Total 9,263,307.00 8,048,038.67 17,311,345.67 23,081,561.00
3 TNEBSoftware Support for TNEB 4,422,084.00 3,841,967.58 8,264,051.58 11,102,908.00 Hardware Support for TNEB 3,535,598.00 3,071,741.52 6,607,339.52 8,723,713.00 Sub-Total 7,957,682.00 6,913,709.10 14,871,391.10 19,826,621.00
4 KPTCLSoftware Support for KEB 4,030,841.00 3,502,020.41 7,532,861.41 10,125,000.00 Hardware Support for KEB 3,222,786.00 2,800,005.91 6,022,791.91 7,955,357.00 Sub-Total 7,253,627.00 6,302,026.32 13,555,653.32 18,080,357.00
5 KSEBSoftware Support for KERALA 4,392,152.00 3,815,960.19 8,208,112.19 11,029,731.00 Hardware Support for KERALA 3,511,666.00 3,050,963.37 6,562,629.37 8,666,217.00 Sub-Total 7,903,818.00 6,866,923.56 14,770,741.56 19,695,948.00
6 UT PONDY Software Support for UT PONDY 3,519,072.00 3,057,395.80 6,576,467.80 8,841,081.00 Hardware Support for UT PONDY 2,813,611.00 2,444,509.84 5,258,120.84 6,946,564.00 Sub-Total 6,332,683.00 5,501,905.64 11,834,588.64 15,787,645.00
Grand Total (INR) 47,667,919.00 41,414,366.97 89,082,285.97 118,793,414.00
Note : The above prices does not include taxes and duties.
Price Break Up Details for AMC OF SR ULDC SCADA
PRESENT AMC VALUE
Automatic Data Reading (AMR) /Collection
SL NO 10 OF TCC
Analysis Details
IEGC RELATED ISSUES
SL NO 11 OF TCC
RGMO
SL NO 11.1 OF TCC
RGMODescription Units Mandated on RGMO as per IEGC Telemetry Status
Hydro Thermal total Avaialble Not available Total
No of units 194 59 253 231 22 253
Installed capacity 10888 15600 26488 25996 492 26488
Status of RGMO in SR
Confirmation
for participation
Excemption/Extention
requested toCERC
Offer received fromOEM/Implementation
Unit Notparticipating in
RGMO as declaredby the constituents
No informationwith RLDC for
status Total
No of units 9 52 64 36 95 256
Installedcapacity 4310 6185 8855 1771 5367 26488
RGMO
RGMO analysis:
1.Droop >30% considered as non response for RGMO
2. Ramagundam Unit #5, 6, & 7 generation is in the range of 102 to 105%
2. On all instances Idukki, Varahi, Nagjhari, Lower Sileru, Sharavati, Sengulam, Kundah
–I,II,III are responding for immediate increase and decrease. (Units already in FGMO)
3. In adequate response from thermal generating units
4. Mostly hydro generating units responded (which is under FGMO)
5. In adequate response leading to system insecurity Hence petition will be filed by
SRLDC to CERC during next month
Mandated And Declared Summary
Case Study Response Summary
Summary
Automatic Demand Management Scheme
SL NO 11.2 OF TCC
Extracts from IEGC dated 28th April 2010Clause 5.4.2 (d)
Quote:
The SLDC through respective State Electricity Boards/Distribution
Licensees shall also formulate and implement state-of-the-art demand
management schemes for automatic demand management like rotational load
shedding, demand response (which may include lower tariff for interruptible
loads) etc. before 01.01.2011, to reduce overdrawl in order to comply para
5.4.2 (a) and (b) . A Report detailing the scheme and periodic reports on
progress of implementation of the schemes shall be sent to the Central
Commission by the concerned SLDC.
All the Constituents are requested to Operationalize
Unquote:
Automatic Demand Management Schemes
Status
Automatic Load Shedding Scheme for Overdrawing Constituents at frequency less than 49.5Hz
SL NO 11.3 OF TCC
• In the 14th SRPC Meeting held at Cochin, Constituents had agreed to
Implement the Load Shedding Scheme for over drawing constituents to avert
frequency falling below 49.5 Hz with the following quantum
• APTRANSCO had been identified 800 MW and tested for remote tripping.
• TANTRANSCO had been identified 647MW and made operational
• KSEB had identified 125 -250 MW
• KAR had identified 384MW ( Max)
• PONDY to furnish the feeder details.
• The Quantum of Load relief through Radial feeder is due for revision.
Excel Computation
Status
Arranging Interruptible Loads in four groups
SL NO 11.4 OF TCC
Extracts from IEGC dated 28th April 2010Clause 5.4.2 (e)
Quote:
Unquote:
In order to maintain the frequency within the stipulated band
and maintaining the network security, the interruptible loads shall be
arranged in four groups of loads, for scheduled power cuts/load
shedding, loads for unscheduled load shedding, loads to be shed
through under frequency relays/ df/dt relays and loads to be shed
under any System Protection Scheme identified at the RPC level.
These loads shall be grouped in such a manner that there is no
overlapping between different Groups of loads. …………………...
•AP & Kerala had completed the exercise
•KPTCL, Pondicherry & Tamil Nadu had initiated the exercise
Status
Demand Estimation
SL NO 11.5 OF TCC
Extracts from IEGC dated 28th April 2010Clause 5.3 (e)
Quote:
Unquote:
While the demand estimation for operational purposes is to be
done on a daily/weekly/monthly basis initially, mechanisms and
facilities at SLDCs shall be created at the earliest but not later than
1.1.2011 to facilitate on-line estimation of demand for daily operational
use for each 15 minutes block.
Constituents are furnishing the block wise forecast
Status
UFR
SL NO 11.6 OF TCC
AUFR settings and Quantum Implementation Status
• Pondicherry – To confirm the status
• UFR Quantum is due for revision
Status
Pending Field Inputs
SL NO 11.7 OF TCC
Pending as on 20.04.11
Year wise comparison
Constituent Mar2008 Mar2009 Mar2010 Mar2011 Apr2011 (20/04/11)
APTRANSCO 618 541 640 484 410KPTCL 800 693 766 334 332KSEB 0 0 25 18 24TNEB 400 138 129 106 105
SR 1 (POWERGRID) 3 4 26 6 17SR 2 (POWERGRID) 205 411 729 173 174
NTPC
RSTPS 56 32 22 35 31RGCCP(Kylm) 16 16 16 16 16
NPCIL
KAIGA 40 40 45 61 63MAPS 61 61 64 61 37
NLC
NLC TS 2 17 13 30 77 57NLC TS 1 EXP 1 1 1 0 0
TOTAL 2217 1950 2493 1371 1266
Details
TRANSMISSION SYSTEM FOR EVACUATION OF POWER FROM SIMHADRI-II TPS (2x500 MW) OF NTPC
SL NO 12 OF TCC
TRANSMISSION SYSTEM FOR EVACUATION OF SIMHADRI-II
SIMHADRI
GAZUWAKA
VEMAGIRI
400KV GAZUWAKA-VEMAGIRI D/C LINE LILO AT SIMHADRI FOR EVACUATION OF SIMHADRI-II (2x500) POWER
IN 28TH STANDING COMMITTEE MEETING, IT WAS DECIDED THAT IN STEAD OF NEW 400KV SIMHADRI-GAZUWAKA D/C LINE, 400KV GAZUWAKA-VEMAGIRI D/C LINE LILOed AT SIMHADRI
MALKARAM
VTS
NARSARAOPET
LILO OF 400KV NUNNA-VTS DC LINE AT NARSRAO PET
PRESENT 400KV VEMAGIRI-NUNNA AP LINES WILL BE CONNECTED TO NARSARAOPET BY DISCONNECTING FROM NUNNA
SIMHADRI – II TPS EVACUATION
• APTRANSCO had accorded concurrence for Open Access for a period of 5 years.
• Further extension of Open Access would be reviewed w.r.t transmission availability.
• APTRANSCO had informed that the charges had been worked out on ARR. The other
constituents may like to take up the matter with APERC.
• In the 13th & 14th SRPC meeting, it was noted that since the Regulations on the use of
intervening system were likely to be notified by CERC, so there may be not be necessary
for approaching APERC in the present scenario.
• Since Kundankulam & NLC generation has not yet came so if Simhadri II
Generation comes up, SR import capability will be reduced to that
extent.Allocation:AP: 384.4 MWKAR: 176.4 MWKER: 80.9 MWTN: 197.7 MWPondy: 10.6 MWUnallocated: 150 MW
OPERATION OF TALCHER-KOLAR HVDC TRANSMISSION SYSTEM IN GROUND RETURN MODE
SL NO 13 OF TCC
PRDC REPORT EXCERPTS
• GRM OPERATION IS NOT POSSIBLE WITHOUT BLOCKING DEVICES AT LARGE
NUMBER OF LOCATIONS
• BLOCKING DEVICES SHIFT THE DC NEUTRAL CURRENT TO A DIFFERENT
LOCATION
• INVESTIGATE THOROUGHLY ELECTRODE DESIGN AND LOCATION
• GRM TO BE LIMITED TO 150 MW
• BLOCKING DEVICES TO BE PROVIDED AT KOLAR, DB PURA AND BIAL 220KV
STATIONS
• TRIP SINGNAL LOGIC NEEDS MODIFICATION?
CEA Letter 13.08.09
KPTCL Letter 12.11.09
GRM DETAILS
SPS 1000 & 450 APPENDIX-IV
Sudden Flow Reduction due to High ambient temp @ Tal & Low Volt @ Kolar
PROGRESS OF BUS /LINE REACTORS TO BE COMMISSSIONED IN SR
SL NO 14 OF TCC
BUS / LINE REACTORS COMMISSIONING BY SR CONSTITUENTSS. No Bus Name Bus /
Line Reactor
Original Target
Revised Target Date
1* Ramagundam Bus Feb-11 Aug-11
2 Simhadri Bus Nov-10 Mar-11
3 Neyveli – Expn. Bus Apr-11 Feb-11
4 Neyveli TS-II Bus Apr-11 Apr-11
5 Raichur TPS Bus Dec-10 Dec-11
6 Talaguppa Bus Jun-10 Mar-12
7 Guttur Bus Jun-10 Mar-12
8 Nelamangala Bus Jun-10 Mar-12
9 Hoody Bus Jun-10 Mar-12
10 Hyderabad Line Apr-11 Jun-11
11 Kurnool Bus Apr-11 Jun-11
12 Vizag Bus Apr-11 Jun-11
Voltages
• The Bus reactor at NTPC Ramagundam have to be connected to Bus section 1 or 2 instead of Bus section 4
• Guttur Line Reactor to be commissioned in addition to Guttur Bus reactor• Commissioning of Bus Reactor at Kudankulam is essential for ensuring availability of
reliable start up supply
IDENTIFICATION OF STRETCHES IN THE STATE SECTOR WHERE INSULATORS ARE TO BE REPLACED DUE TO
POLLUTION/FOG/SEA WATER
SL NO 16 OF TCC
• Kali Complex in Karnataka.
• Tuticorin Area in Tamil Nadu.
• Coastal Area around Kalpaka in Andhra Pradesh.
• Tripping in Raichur Switch yard due to tracking of Insulators.
• All Constituents to take up replacement of Insulators in prone area as well
as cleaning up of Insulators in Switch yard which are prone to pollution.
HIGHLY SENSITIVE AREA (FREQUENT TRIPPING DUE TO POLLUTION/FOG/SEA WATER)
PCC Meeting
RTPS
TTPS
OPERATIONALISING OF CHIKKODI-KOLHAPUR 220 KV LINE
SL NO 19 OF TCC
• Any of the planning issues relating to Operationalizing of Chikkodi –Kolhapur
220 kV line like seeking exemption from CERC on Inter Regional ATC
computation etc have to be done by SRPC Secretariat directly .
OPERATIONALISING OF CHIKKODI-KOLHAPUR 220 KV LINE
SHUT DOWN OF INTER REGIONAL LINKS
SL NO 20 OF TCC
• Talcher – Kolar S/D to be availed only during July – December along with S/D
of Talcher Stage II Units
• Concurrence of NLDC & the connected region to be taken for planned
outage of IR links
• Annual Outage Plan of IR links to be concurred by NLDC & Concerned region
SHUT DOWN OF INTER REGIONAL LINKS
SHUT DOWN OF 400 KV VIJAYAWADA- NELLORE D/C LINE
SL NO 21 OF TCC
BEFORE S/D AP LETTER AFTER S/D
SCHEDULING OF TALCHER STPS STAGE II
SL NO 23 OF TCC
• Committee recommended that the scheduling of Talcher STPS-II be
continued to done by SRLDC, as the clauses in the IEGC allow the same
and change is not called for.
Scheduling of Talcher Stg II
Scheduling of Talcher stg IIClause 6.4 of IEGC• The national interconnected grid is divided into control areas, like Regional ISTS,
States, DVC, etc. where the load dispatch centre or system operator of the respective control area controls its generation and/or load to maintain its interchange schedule with other control areas whenever required to do so and contributes to frequency regulation of the synchronously operating system. The Load Despatch Centre of a control area therefore is responsible for coordinating the scheduling of a generating station, within the control area, real time monitoring the station’s operation, checking that there is no gaming (gaming is an intentional mis-declaration of a parameter related to commercial mechanism in vogue, in order to make an undue commercial gain) in its availability declaration or in any other way revision of availability declaration and injection schedule, switching instructions, metering and energy accounting, issuance of UI accounts within the control area, collections/disbursement of UI payments, outageplaning etc. .
Control area definition in IEGC:An electrical system bounded by interconnections (tie lines) , metering and telemetry which controls its generation and/or load to maintain its interchange schedule with other control areas whenever required to do so and contributes to frequency regulation of the synchronously operating system.
Why SRLDC ?
• Minimal to and fro co-ordination between RLDC’s and SLDc’s in case of scheduling process involving surrender ,recall etc.
• Less time in to and fro communication
• Right from planning to implementation Talcher II is apart of SR system. Only geographically located in ER system
• SR boundary is upto Talcher AC I/C & Jeypore end of Gazuwaka line
• In analogy to 6.4.2c(iii) of IEGC and SoR of IEGC 2010 in para 41.13, the control area jurisdiction of Talcher-II shall be with SRLDC as more than 50% share is to SR constituents.
• In case of Open Access transaction also the nodal RLDC is that of importing region. On same Anology SRLDC is nodal agency for Talcher-II
• It plays a vital role in the LGBR of SR
• AOH coordination by SRPC OCC
• SPS already in place for eventualities like unit /pole tripping.
• Present system is working fine for over 8 years.
Continued
Extracts from SoR on IEGC dt.18.06.201041. Demarcation of responsibilities( Regulation 6.4 of draft grid code regulations)
41.13 This has been done to ensure certainty in the demarcation of responsibilities.The IPP with their business strategy would decide quantum of power to be soldthrough long term, Medium term and short terms. The connectivity to ISTS andSTU system indicates that generator wants to avail this flexibility. As thecustomer of this type of generator would be in more than one region, RLDCthrough its communication system would be able to coordinate with more thanone regions and also RLDC would be aware of system operating conditions liketransmission constraints, Voltage conditions etc and would be in better positionto ensure that scheduling to various consumers of the IPP is done optimally onday to day basis. Hence, we have decided that if the host State has more than50% share of power, then that generating station shall be under the jurisdictionof SLDC, else it shall be under RLDC. Regarding the apprehension of somestakeholders on frequent toggling of control area jurisdiction, it is clarified thatthe control area jurisdiction is decided on the basis of permanent share of thehost State, which will not change frequently, hence frequent toggling would notbe there. Moreover, initially when one or two units/ stages of the project willcome under commercial operation, the jurisdiction would be more likely withSLDC depending on the share of the host State. On the progressivecommissioning of units/ stages, it is more likely that the share of the host Statewould decrease and become equal to or less than 50%, resulting in shifting ofcontrol area jurisdiction from SLDC to RLDC. In future also, when more unitsare commissioned, it is more likely that the control area jurisdiction will remainwith RLDC and there would not be frequent toggling. Regarding theapprehension of some stakeholders about the problem in metering during dueto this toggling, it is clarified that the interface meters at CTU and STUinterfaces shall be installed as per the CEA regulations on metering. It isfurther clarified that as switchover of control area would be done expeditiouslyafter the change w.e.f. the next billing period i.e. next week UI accounting thereshall not be any problem in energy accounting as anticipated by SLDC,Maharashtra. For inter-State energy accounting, it shall be as per CERC ABTmechanism.
LOW FREQUENCY OPERATION
SL NO 24.3 OF TCC
SCH VS DRW ABC & 12%
FLOW GATE VIOLATION
FREQUENCY SPECTRUM OF SOUTHERN REGIONAL GRID(APRIL’09 TO 27th APR’11)
MONTH FREQUENCY (Hz) % OF TIME WHEN FREQUECY WAS BETWEEN
MAX MIN AVG < 48.5 HZ 48.5 TO 49.0 HZ
49.0 TO 49.2 HZ
49.2 TO 49.5 HZ
49.5 TO 50.0 HZ
50.0 TO 50.3 HZ > 50.3 HZ
Apr-09 50.93 48.53 49.39 0 6.7 13.88 39.66 36.65 3.68 0.44May-09 51.03 48.56 49.72 0 1.86 2.52 18.32 51.31 21.41 4.58Jun-09 50.41 48.97 49.57 0 1.35 3.8 32.5 51.91 9.64 0.8Jul-09 50.48 49.04 49.66 0 0.08 0.96 21.11 65.01 11.74 1.1
Aug-09 50.25 48.98 49.52 0 0.77 3.15 34.34 58.18 3.31 0.25Sep-09 50.68 48.82 49.72 0 0.02 0.32 11.53 69.93 15.82 2.38Oct-09 50.85 48.57 49.53 0 1.57 4.23 37.14 47.45 8.21 1.4Nov-09 50.57 48.58 49.77 0 0.06 0.19 4.35 76.25 18.12 1.02Dec-09 50.38 49.2 49.75 0 0.04 0.15 7.48 70.9 20.7 0.73Jan-10 50.47 49.18 49.76 0 0.06 0.24 6.34 74.6 17.42 1.34Feb-10 50.27 49.08 49.59 0 0.46 2.39 20.32 71.33 5.29 0.23Mar-10 50.2 48.78 49.39 0 2.91 9.07 50.78 35.53 1.59 0.12Apr-10 50.56 48.57 49.45 0 2.83 7.19 40.91 45.55 3.27 0.24
MAX MIN AVG < 48.5 HZ 48.5 TO 49.0 HZ
49.0 TO 49.2 HZ
49.2 TO 49.5 HZ
49.5 TO 50.0 HZ
50.0 TO 50.2 HZ > 50.2 HZ
May-10 50.88 48.58 49.84 0 0.28 0.25 2.45 71.97 19.26 5.79Jun-10 50.67 48.56 49.81 0 0.83 1.04 3.88 73.81 14.52 5.92Jul-10 50.69 48.92 49.85 0 0.03 0.16 1.27 82.36 12.13 4.05
Aug-10 50.54 48.7 49.81 0 0.04 0.17 3.52 77.64 13.39 5.24Sep-10 50.57 48.84 49.92 0 0.06 0.25 1.33 64.25 26.49 7.62Oct-10 50.66 49.24 49.91 0 0 0 0.21 71.15 21.47 7.17Nov-10 50.97 48.88 49.99 0 0.03 0.07 0.54 55.03 28.53 15.8Dec-10 50.97 48.96 49.92 0 0 0.03 0.75 67.24 22.33 9.65Jan-11 50.99 49.22 49.82 0 0 0 1.43 79.97 15.04 3.56Feb-11 50.93 48.83 49.7 0 0.07 0.42 7.91 85.73 4.95 0.92Mar-11 50.82 48.81 49.61 0 0.17 0.78 18.27 78.63 1.77 0.38Apr-11 50.86 48.81 49.65 0.00 0.33 1.46 20.10 69.77 6.97 1.37
HIGH FREQUENCY OPERATION
SL NO 24.4 OF TCC
GRAPHS & MSGs
Staggering of loads in a co-ordinated manner have to be done during change over by Constituents. Staggering to be reviewed
Major Events
SL NO 24.6 OF TCC
MAJOR EVENTS
Hydro Availability
SL NO 24.7 OF TCC
Reservoir Position
LEVEL IN MTS
Full Reservoir
Level
Last 9 Years Corresponding Monthly
Average Level
LEVEL LEVEL
Last 9 Years
Corresponding
Monthly Average
MU's
ENERGY ENERGY
Shortfall (-ve) / Rise (+ve) IN MU w.r.t Last
Year Same Day
Shortfall (-ve) / Rise (+ve) w.r.t 9 years
Corresponding Monthly Average
27/Apr/2010
27/Apr/2011
27/Apr/2010
27/Apr/2011 April April MU % MU %
JALAPUT 838.40 834.61 822.17 835.24 246 83 402 319 384 156 63
SRISAILAM 270.70 263.65 247.86 247.53 --- --- --- --- --- --- ---
N’SAGAR 179.90 164.82 157.34 168.71 --- --- --- --- --- --- ---
LINGANMAKKI 554.50 549.29 540.21 541.75 1143 1287 1515 228 18 372 32
SUPA 564.00 546.38 527.89 529.21 788 748 805 57 8 17 2
IDUKKI 732.43 721.53 708.94 713.50 601 595 837 242 41 236 39
KAKKI 969.80 974.23 958.89 959.90 318 333 350 17 5 32 10
NILGIRIS --- --- --- --- 534 491 191 -300 -61 -343 -64
TOTAL 3631 3537 4100 563 16 470 13
Reservoir Level Graph
10.0
20.0
30.0
40.0
50.0
60.0
70.0
80.0
90.0
100.0
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2007-08 2008-09 2009-10 2010-11
Reservoir levels in % as on last day of the month for the years 2007-08, 08-09, 09-10,10-11
Reservoir levels in Mu as on last day of the month for the years 2007-08, 08-09, 09-10,10-11
0
2000
4000
6000
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10000
12000
14000
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2007-08 2008-09 2009-10 2010-11
4100 MU on 27th Apr 2011
31.99% on 27th Apr 2011
Grid Voltage
SL NO 24.8 OF TCC
Vemagiri MOMVoltages
Installation of Bus reactor at Vemagiri complex may be considered to address the high voltage problem at vemagiri
Vemagiri Tap Change
VAR Absorption/Injection by Generators within Capability Limits
SL NO 24.9 OF TCC
Graphs
Operation of Talcher – Kolar HVDC Link in extended mode of operation
SL NO 27 OF TCC
Report
CRISIS MANAGEMENT PLAN
SL NO D 2.1 OF TCC
PROGRESS
Closing of 220/230 kV Inter State Lines
Supp Agenda 2 Point 4 OF TCC
Sr.No. Date Meeting Point Discussed1 06-Jun-08 6th TCC RADIALISATION OF CHIKKODI ON N-E-W GRID THROUGH CHIKKODI – KOLHAPUR LINE2 13-Aug-08 28th OCC RADIALISATION OF CHIKKODI ON N-E-W GRID THROUGH CHIKKODI – KOLHAPUR LINE3 18-Oct-08 7th TCC RADIALISATION OF CHIKKODI ON N-E-W GRID THROUGH CHIKKODI – KOLHAPUR LINE4 11-Nov-08 29th OCC STATUS REVIEW ON RADIALISATION OF CHIKKODI ON N-E-W GRID THROUGH CHIKKODI –
KOLHAPUR LINE (DISCUSSED IN 28TH OCCM)5 10-Dec-08 30th OCC STATUS REVIEW ON RADIALISATION OF CHIKKODI ON N-E-W GRID THROUGH CHIKKODI –
KOLHAPUR LINE (DISCUSSED IN 29TH OCCM)6 05-Mar-09 8th TCC RADIALISATION OF CHIKKODI ON N-E-W GRID THROUGH CHIKKODI – KOLHAPUR LINE7 10-Jul-09 37th OCC OUTAGE OF 220KV CHITTOR - THIRUVALEM LINE SINCE 10TH FEB 09 – PROGRAMME FOR
PUTTING LINE BACK INTO SERVICE8 10-Jul-09 37th OCC CLOSING OF SULURPET-GUMMDIPOONDI FOR REDUCING OVERLOADING OF NEYVELI - S P
BUDUR LINE9 09-Sep-09 39th OCC PROLONGED OUTAGE OF CHITTOOR-THIRUVELAM SINCE 10TH FEB 09 15:20 HRS10 13-Oct-09 40th OCC PROLONGED OUTAGE OF CHITTOR – THIRUVALEM LINE SINCE 10TH FEB 09 15:20 HRS11 12-Nov-09 41st OCC PROLONGED OUTAGE OF CHITTOR – THIRUVALEM LINE SINCE 10TH FEB 09 15:20 HRS12 12-Nov-09 41st OCC PROLONGED OUTAGE OF SULURPET –GUMMUDIPOONIDI SINCE 24 /10/09 22:40 HRS13 11-Dec-09 42nd OCC TN TO EXPEDITE SYNCHRONISATION OF CHITTOR-THIRUVALEM LINE14 11-Dec-09 42nd OCC REVIEW OF SULURPET – GUMMIDIPOONDI O/L TRIPPING SETTINGS15 08-Jan-10 43rd OCC TN TO EXPEDITE SYNCHRONISATION OF CHITTOR-THIRUVALEM LINE16 08-Jan-10 43rd OCC REVIEW OF SULURPET – GUMMIDIPOONDI O/L TRIPPING SETTINGS 17 03-Feb-10 8th PCC TN TO EXPEDITE SYNCHRONISATION OF SULURPET – GUMMIDIPOONDI & CHITTOR-
THIRUVALEM LINE18 11-Feb-10 44th OCC TN TO EXPEDITE SYNCHRONISATION OF CHITTOR-THIRUVALEM LINE19 11-Feb-10 44th OCC REVIEW OF SULURPET – GUMMIDIPOONDI O/L TRIPPING SETTINGS 20 09-Mar-10 45th OCC TN TO EXPEDITE SYNCHRONISATION OF CHITTOR-THIRUVALEM LINE21 25-Jun-10 48th OCC TN TO EXPEDITE SYNCHRONISATION OF CHITTOR-THIRUVALEM LINE22 14-Jul-10 49th OCC CHITTOR-THIRUVALAM LINE CHARGED ON 28.06.1023 08-Oct-10 52nd OCC TN TO EXPEDITE SYNCHRONISATION OF SULURPET – GUMMIDIPOONDI LINE24 10-Dec-10 54th OCC SYNCHRONISED THE 230 kV SULURPET – GUMMIDIPOONDI LINE ON 04.12.201025 10-Jan-11 55th OCC RESTRICT THE LINE LOADING TO < 100 MW ON SULURPET – GUMMIDIPOONDI LINE26 08-Feb-11 56th OCC TN TO EXPEDITE SYNCHRONISATION OF SULURPET – GUMMIDIPOONDI LINE27 09-Mar-11 57th OCC TN TO EXPEDITE SYNCHRONISATION OF SULURPET – GUMMIDIPOONDI & CHITTOR-
THIRUVALEM LINE
VARIOUS MEETINGS WHERE ISSUE OF CLOSING AP-TN, AND INTER REGIONA LINKS WERE TAKEN UP
Operation of 400 kV Lines Upto SIL derived steady State limit
Supp Agenda 2 Point 2 OF TCC
PPT REPORT
Automatic Data Reading (AMR) /Collection
• To avoid all the data related delays and fulfill the deadlines set by IEGC,
SRLDC had proposed to adopt AMR scheme in SR. In SR, there are about 600
SEMs installed in about 100 locations. Scheme may be implemented by PGCIL
at an estimated cost of about Rs. 1.5 Crores which can be recovered through
tariff in the same way as the cost of SEMs is being recovered.
• Outcome of the 14th commercial Sub – Committee meeting
Committee in principle agreed the proposal.
SRLDC suggested that cost may be recovered through tariff.
Proposal for automatic data reading
(AMR) /collection (to be implemented by POWERGRID):To avoid delays in SEM data transmission to SRLDC it is proposed to adopt AMR scheme
in SR at an estimated cost of Rs.1.5Crores.Schematic representation of AMR is as below.
Hardware required for each location:Modem-1 no, Data Concentrator Unit-1 noLocal Computer- 1 no., Remote Computer at SRLDC – 1 no. Cost of Communication on GPRS mode : as per actual.
Bill Of QuantitiesSl. No. Description
Qty. * Unit
Rate Rs **
Amount Rs.
A For S/S with meters located in Control Room (Aprox. 120 S/S) #
1)All required hardwares i.e. Meter Interfacing Unit/Protocol Comnverter/Optical Probe/ Connectors / Cable for data transfer between meters and Data Concentrator etc.
700 Per SEM 6602 4621400
2) Data Concentrator Unit/Data Accumulator (one No. at each location) 120 No. 22000 2640000
3) GPRS Modem (One No. at each location) 120 No. 6500 780000
B Common for total Scheme
1)Meter Data Acquisition & Analysis software (For all Data Concentrator Units/Data Accumulators (Approx. 120 Nos.) and Servers at SRLDC (2 Nos.).
1Lumpsu
m1000000 1000000
2)Training to personnel posted at all S/S where scheme will be commisioned and SRLDC. (10 Trainings with a batch of 20-30 participants)
10 No. 200000
3) Installation, Testing & Commissioning/Customization cost 700 Per SEM 2112 1478400
C CENTRAL LOCATION (AT SRLDC & 6 SLDCs)
1) Central server (Including cost of required RDBMS & OS) 7 No. 175000 1225000
2) UPS (2 KVA) 7 No. 30000 210000
3) GPRS/GSM Modems 7 No. 6500 45500
D Wararnty / AMC
1) Warranty for 1 year NIL
2) AMC for 1st year after Warranty 700 Per SEM 806 564480
3) AMC for 2nd year after Warranty 800 Per SEM 853 682667
4) AMC for 3rd year after Warranty 900 Per SEM 894 804414
5) AMC for 4th year after Warranty 1000 Per SEM 929 929032
Total 15180893
Minutes of 14th NRPC meeting reg. AMR scheme implementation
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