6772-6802 · 2014. 7. 21. · 90 nsr-rcnl 132.00 1 ap_hydro na 91 nsr-rcnl 132.00 2 ap_hydro na 92...
TRANSCRIPT
Page 1 of 4
Revisions in System Protection Schemes(SPS)-post synchronization of second circuit of
765 kV Raichur-Sholapur
(In continuation with NLDC proposal dated 11th
April 2014) 7
th July 2014
S.
no
Triggering criteria for SPS(already
implemented)
(A)
SPS action implemented
(B)
Proposed revision in SPS post
synchronization of 2nd circuit
of 765 kV Sholapur
(C )
Remarks
(D )
1 765kV Sholapur-Raichur flow >
1000 MW: SPS-1
Total flow on 765 kV Sholapur-Raichur S/C
lines crossing a pre-set value of 1000 MW
in Sholapur to Raichur direction sensed
both at Sholapur and Raichur along with
time delay of 2.5 seconds
It should also act instantaneously when the power flow crosses 1500 MW.
Western Region 500MW Gen Back down JPL - 350MW KSK - 150MW DB power=0 (additional backing down of 300 MW through additional generators yet to be implemented)
Southern Region 500 MW Load Shedding Tamilnadu- 146MW Kerala - 125MW Karnataka- 104MW Andhra Pradesh 125MW
Revision: i) With both circuits of 765 kV
Sholapur-Raichur in
operation: SPS at Sholapur
and Raichur should trigger
when total flow on 765 kV
Sholapur-Raichur 2*S/C line
crosses 1500 MW from
Sholapur to Raichur and
remains above 1500 MW
for 2.5 seconds.
It should also act instantaneously when the total power flow crosses 2000 MW.
Rationale: Since both the circuits of 765 kV Raichur-Sholapur would be in service, total flow of both the circuits should be measured and the threshold value of SPS may be increased from 1000 MW to 1500 MW.
Page 2 of 4
S.
no
Triggering criteria for SPS(already
implemented)
(A)
SPS action implemented
(B)
Proposed revision in SPS post
synchronization of 2nd circuit
of 765 kV Sholapur
(C )
Remarks
(D )
Additional backing down of 300 MW from generators in Western Region (as identified by WRPC) was sought, earlier. This needs to be implemented at the earliest. The suggested changes above might however be implemented, without relating to implementation of additional backing down of generation.
ii) With only one circuit in
operation: The
arrangement at Column A
and B should be activated
automatically.
2 SPS for Loss of 800 MW import
by SR: SPS-3 Loss of import on both the circuits of 765
kV Sholapur-Raichur by more than 800
Same as above except generation
Suggestion: Total power flow of both the circuits of 765 kV Sholapur-Raichur should be measured and in case there is
Earlier, the setting might have been implemented considering only one line; it may be ensured that the logic
Page 3 of 4
S.
no
Triggering criteria for SPS(already
implemented)
(A)
SPS action implemented
(B)
Proposed revision in SPS post
synchronization of 2nd circuit
of 765 kV Sholapur
(C )
Remarks
(D )
MW due to tripping of these lines i.e.,
tripping of two 765kV lines.
backing down in NEW grid is not
required.
tripping of both these circuits and loss of more than 800 MW import by SR, the SPS should act.
now sees the sum of the two lines.
7 765kV Raichur-Sholapur line
current exceeding 800 Amp
(1000 MW from Sholapur to
Raichur direction): SPS-7
Tripping of 765kV Raichur-
Sholapur line with 10 seconds
delay.
Revision:
i) Both circuits of 765
kV Sholapur-
Raichur in service:
Action: Line tripping to be blocked ii) Only one circuit
between 765 kV
Sholapur-Raichur in
operation:
Action: Arrangement as per column A and B to be activated automatically.
Rationale: Since there would be two 765 kV AC lines between NEW grid and SR Grid, the other line would carry full power in case of tripping of other. Therefore there is no need of this SPS post synchronisation of second circuit of 765 kV Raichur-Sholapur
Page 4 of 4
In addition to the above revisions, revisions suggested by NLDC vide letter dated 11th
April 2014 and yet not implemented shall also
be implemented incorporating the above revisions.
Notwithstanding the above revisions suggested, the following are also important.
o Improving reliability of SPS through redundant measurements, logic, communication path and end terminals.
o Use of metering core of CTs and PTs for analog measurements used in the SPS logic, particularly where the same is based on
steady state flows crossing a particular value.
o Need to cover more generators in the NEW grid so that adequate relief is available as in many instances, the antecedent
generation in many of the generators selected is already very low.
o Wiring of each SPS operation to the local substation Event Logger.
o Triggering of each SPS action and the receipt of signal at each point to be recorded in SLDC/RLDC/NLDC SCADA
o Prompt submission of data to RLDCs regarding SPS action in the prescribed format.
o Each instance of inadequate relief through SPS to be thoroughly analysed and remedial actions taken so as to have increased
confidence on the SPS reliability.
Dynamic Study Data pending Annexure VII
S.NOGENERATOR UNIT AREA NAME AVAILABILITY OF
DYNAMIC DATA
1 TAL-ST2 400.00 1 TAL_NTPC NA2 TAL-ST2 400.00 2 TAL_NTPC NA3 TAL-ST2 400.00 3 TAL_NTPC NA4 TAL-ST2 400.00 4 TAL_NTPC NA5 RGM-NTPC 400.00 4 RGM_NTPC NA6 RGM-NTPC 400.00 5 RGM_NTPC NA7 RGM-NTPC 400.00 6 RGM_NTPC NA8 RGM-NTPC 400.00 7 RGM_NTPC NA9 SRLMLB 400.00 1 AP_HYDRO NA10 SRLMLB 400.00 2 AP_HYDRO NA11 SRLMLB 400.00 3 AP_HYDRO NA12 SRLMLB 400.00 4 AP_HYDRO NA13 SRLMLB 400.00 5 AP_HYDRO NA14 SRLMLB 400.00 6 AP_HYDRO NA15 VTS-IV 400.00 1 AP_THML NA16 GMR 400.00 1 AP_GAS NA17 GMR 400.00 2 AP_GAS NA18 GAUTAMI 400.00 1 AP_GAS NA19 GAUTAMI 400.00 2 AP_GAS NA20 GAUTAMI 400.00 3 AP_GAS NA21 KONSEEMA 400.00 1 AP_GAS NA22 KONSEEMA 400.00 2 AP_GAS NA23 KONSEEMA 400.00 3 AP_GAS NA24 GVK-II 400.00 1 AP_GAS NA25 GVK-II 400.00 2 AP_GAS NA26 LANCO 400.00 1 LANCO NA27 LANCO 400.00 2 LANCO NA28 SMHPURI 400.00 1 SEPL_MEPL NA29 SMHPURI 400.00 2 SEPL_MEPL NA30 SMHPURI 400.00 3 SEPL_MEPL NA31 MNAKSHI 400.00 1 SEPL_MEPL NA32 MNAKSHI 400.00 2 SEPL_MEPL NA33 HINDUJA 400.00 1 AP_THML NA34 DONKARAI 220.00 1 AP_HYDRO NA35 HWP 220.00 1 AP_OTHERS NA36 LOWRERU 220.00 1 AP_HYDRO NA37 LOWRERU 220.00 2 AP_HYDRO NA38 LOWRERU 220.00 3 AP_HYDRO NA39 LOWRERU 220.00 4 AP_HYDRO NA40 NAGRJGAR 220.00 1 AP_HYDRO NA41 NAGRJGAR 220.00 2 AP_HYDRO NA42 NAGRJGAR 220.00 3 AP_HYDRO NA43 NAGRJGAR 220.00 4 AP_HYDRO NA44 NAGRJGAR 220.00 5 AP_HYDRO NA45 NAGRJGAR 220.00 6 AP_HYDRO NA46 NAGRJGAR 220.00 7 AP_HYDRO NA47 NAGRJGAR 220.00 8 AP_HYDRO NA
1
Dynamic Study Data pending Annexure VII48 SRIAILAM 220.00 1 AP_HYDRO NA49 SRIAILAM 220.00 2 AP_HYDRO NA50 SRIAILAM 220.00 3 AP_HYDRO NA51 SRIAILAM 220.00 4 AP_HYDRO NA52 SRIAILAM 220.00 5 AP_HYDRO NA53 SRIAILAM 220.00 6 AP_HYDRO NA54 SRIAILAM 220.00 7 AP_HYDRO NA55 VIJESM-I 220.00 1 AP_THML NA56 VIJESM-I 220.00 2 AP_THML NA57 VIJESM-I 220.00 3 AP_THML NA58 VTPS 220.00 1 AP_THML NA59 VTPS 220.00 2 AP_THML NA60 VTPS 220.00 3 AP_THML NA61 VTPS 220.00 4 AP_THML NA62 VTPS 220.00 5 AP_THML NA63 VTPS 220.00 6 AP_THML NA64 JEGRUADU 220.00 1 AP_GAS NA65 JEGRUADU 220.00 2 AP_GAS NA66 JEGRUADU 220.00 3 AP_GAS NA67 JEGRUADU 220.00 4 AP_GAS NA68 SPECTRUM 220.00 1 AP_GAS NA69 SPECTRUM 220.00 2 AP_GAS NA70 SPECTRUM 220.00 3 AP_GAS NA71 SPECTRUM 220.00 4 AP_GAS NA72 VIJHE-II 220.00 1 AP_THML NA73 VIJHE-II 220.00 2 AP_THML NA74 KONAPGS 220.00 1 AP_GAS NA75 KONAPGS 220.00 2 AP_GAS NA76 KONAPGS 220.00 3 AP_GAS NA77 RELIANCE 220.00 1 AP_GAS NA78 RELIANCE 220.00 2 AP_GAS NA79 JURALA 220.00 1 AP_HYDRO NA80 JURALA 220.00 2 AP_HYDRO NA81 JURALA 220.00 3 AP_HYDRO NA82 JURALA 220.00 4 AP_HYDRO NA83 JURALA 220.00 5 AP_HYDRO NA84 GMRBORGE 220.00 1 AP_GAS NA85 VSP 220.00 1 AP_GAS NA86 HAMPI 132.00 1 AP_GAS NA87 MACHKUND 132.00 1 AP_HYDRO NA88 NAVLWARF 132.00 1 AP_GAS NA89 NAVBAATH 132.00 1 AP_GAS NA90 NSR-RCNL 132.00 1 AP_HYDRO NA91 NSR-RCNL 132.00 2 AP_HYDRO NA92 NSR-RCNL 132.00 3 AP_HYDRO NA93 NELORION 132.00 1 AP_GAS NA94 PCHMPDPH 132.00 1 AP_HYDRO NA95 PCHMPDPH 132.00 2 AP_HYDRO NA96 PCHMPDPH 132.00 3 AP_HYDRO NA97 UPPRERU 220.00 1 AP_HYDRO NA98 UPPRERU 220.00 2 AP_HYDRO NA
2
Dynamic Study Data pending Annexure VII99 UPPRERU 220.00 3 AP_HYDRO NA
100 UPPRERU 220.00 4 AP_HYDRO NA101 NSR-LCNL 132.00 1 AP_HYDRO NA102 NSR-LCNL 132.00 2 AP_HYDRO NA103 NIZMSGAR 132.00 1 AP_HYDRO NA104 NIZMSGAR 132.00 2 AP_HYDRO NA105 PNNAHBLM 132.00 1 AP_HYDRO NA106 PNNAHBLM 132.00 2 AP_HYDRO NA107 BHARAARD 132.00 1 AP_GAS NA108 SINGUR 132.00 1 AP_HYDRO NA109 SINGUR 132.00 2 AP_HYDRO NA110 SRI-IES 132.00 1 AP_GAS NA111 GBRPOANT 132.00 1 AP_GAS NA112 VATSASA 132.00 1 AP_OTHERS NA113 LVSPOECT 132.00 1 AP_OTHERS NA114 NCS 132.00 1 AP_GAS NA115 CLARION 132.00 1 AP_GAS NA116 MADHUCON 132.00 1 AP_OTHERS NA117 NLC1EXP 400.00 1 NEYVELI NA118 NLC1EXP 400.00 2 NEYVELI NA119 KUDMKLM 400.00 1 KKNPP_NPC NA120 KUDMKLM 400.00 2 KKNPP_NPC NA121 VALLUR 400.00 1 VALLUR_TPS NA122 VALLUR 400.00 2 VALLUR_TPS NA123 VALLUR 400.00 3 VALLUR_TPS NA124 METR-III 400.00 1 TN_THML NA125 NCTPS-II 400.00 1 TN_THML NA126 NCTPS-II 400.00 2 TN_THML NA127 ETPS2 230.00 1 TN_THML NA128 ETPS2 230.00 2 TN_THML NA129 ETPS2 230.00 3 TN_THML NA130 KADMPRI2 230.00 1 TN_HYDRO NA131 KADMPRI2 230.00 2 TN_HYDRO NA132 KADMPRI2 230.00 3 TN_HYDRO NA133 KADMPRI2 230.00 4 TN_HYDRO NA134 KUNDAH32 230.00 1 TN_HYDRO NA135 KUNDAH32 230.00 2 TN_HYDRO NA136 KUNDAH32 230.00 3 TN_HYDRO NA137 KUNDAH42 230.00 1 TN_HYDRO NA138 KUNDAH42 230.00 2 TN_HYDRO NA139 MAPS2 230.00 1 MAPS_NPC NA140 MAPS2 230.00 2 MAPS_NPC NA141 MTPS2 230.00 1 TN_THML NA142 MTPS2 230.00 2 TN_THML NA143 MTPS2 230.00 3 TN_THML NA144 MTPS2 230.00 4 TN_THML NA145 MTUNEL2 230.00 1 TN_HYDRO NA146 MTUNEL2 230.00 2 TN_HYDRO NA147 MTUNEL2 230.00 3 TN_HYDRO NA148 MTUNEL2 230.00 4 TN_HYDRO NA149 STCMS 230.00 1 TN_IPP NA
3
Dynamic Study Data pending Annexure VII150 NLCTS12 230.00 7 TN_THML NA151 NLCTS12 230.00 8 TN_THML NA152 NLCTS12 230.00 9 TN_THML NA153 NMTPS2 230.00 1 TN_THML NA154 NMTPS2 230.00 2 TN_THML NA155 NMTPS2 230.00 3 TN_THML NA156 PPNALUR2 230.00 1 TN_IPP NA157 PUSHEP2 230.00 1 TN_HYDRO NA158 PUSHEP2 230.00 2 TN_HYDRO NA159 PUSHEP2 230.00 3 TN_HYDRO NA160 TTPS2 230.00 1 TN_THML NA161 TTPS2 230.00 2 TN_THML NA162 TTPS2 230.00 3 TN_THML NA163 TTPS2 230.00 4 TN_THML NA164 TTPS2 230.00 5 TN_THML NA165 LNCO_TAJ 110.00 1 TN_IPP NA166 LNCO_TAJ 110.00 2 TN_IPP NA167 ALIYAR1 110.00 1 TN_HYDRO NA168 PINR_EL1 110.00 1 TN_IPP NA169 PINR_EL2 110.00 1 TN_IPP NA170 KKGTP 110.00 1 TN_GAS NA171 KKGTP 110.00 2 TN_GAS NA172 KODYR1 110.00 1 TN_HYDRO NA173 KODYR21 110.00 2 TN_HYDRO NA174 KUNDA1 110.00 1 TN_HYDRO NA175 KUNDA1 110.00 2 TN_HYDRO NA176 KUNDA1 110.00 3 TN_HYDRO NA177 KUNDA21 110.00 1 TN_HYDRO NA178 KUNDA21 110.00 2 TN_HYDRO NA179 KUNDA21 110.00 3 TN_HYDRO NA180 KUNDA21 110.00 4 TN_HYDRO NA181 KUNDA21 110.00 5 TN_HYDRO NA182 KUND51 110.00 1 TN_HYDRO NA183 KUND51 110.00 2 TN_HYDRO NA184 LOMPH11 110.00 1 TN_HYDRO NA185 LOMPH11 110.00 2 TN_HYDRO NA186 LOMPH21 110.00 1 TN_HYDRO NA187 LOMPH21 110.00 2 TN_HYDRO NA188 LOMPH31 110.00 1 TN_HYDRO NA189 LOMPH31 110.00 2 TN_HYDRO NA190 LOMPH41 110.00 1 TN_HYDRO NA191 LOMPH41 110.00 2 TN_HYDRO NA192 METRD1 110.00 1 TN_HYDRO NA193 METRD1 110.00 2 TN_HYDRO NA194 METRD1 110.00 3 TN_HYDRO NA195 METRD1 110.00 4 TN_HYDRO NA196 MOYAR1 110.00 1 TN_HYDRO NA197 MOYAR1 110.00 2 TN_HYDRO NA198 MOYAR1 110.00 3 TN_HYDRO NA199 NLCTS11 110.00 1 TN_THML NA200 NLCTS11 110.00 2 TN_THML NA
4
Dynamic Study Data pending Annexure VII201 NLCTS11 110.00 3 TN_THML NA202 NLCTS11 110.00 4 TN_THML NA203 NLCTS11 110.00 5 TN_THML NA204 NLCTS11 110.00 6 TN_THML NA205 PPNSM1 110.00 1 TN_HYDRO NA206 PPNSM1 110.00 2 TN_HYDRO NA207 PPNSM1 110.00 3 TN_HYDRO NA208 PPNSM1 110.00 4 TN_HYDRO NA209 PERYR1 110.00 1 TN_HYDRO NA210 PERYR1 110.00 2 TN_HYDRO NA211 PERYR1 110.00 3 TN_HYDRO NA212 PERYR1 110.00 4 TN_HYDRO NA213 PYKR1 110.00 1 TN_HYDRO NA214 PYKR1 110.00 2 TN_HYDRO NA215 PYKR1 110.00 3 TN_HYDRO NA216 PYKR1 110.00 4 TN_HYDRO NA217 PYKR1 110.00 5 TN_HYDRO NA218 PYKR1 110.00 6 TN_HYDRO NA219 PYKR1 110.00 7 TN_HYDRO NA220 SAMLPATI 110.00 1 TN_IPP NA221 SAMLPATI 110.00 2 TN_IPP NA222 SAMLPATI 110.00 3 TN_IPP NA223 SAMLPATI 110.00 4 TN_IPP NA224 SAMLPATI 110.00 5 TN_IPP NA225 SAMLPATI 110.00 6 TN_IPP NA226 SAMLPATI 110.00 7 TN_IPP NA227 MPCL 110.00 1 TN_IPP NA228 MPCL 110.00 2 TN_IPP NA229 MPCL 110.00 3 TN_IPP NA230 MPCL 110.00 4 TN_IPP NA231 MPCL 110.00 5 TN_IPP NA232 MPCL 110.00 6 TN_IPP NA233 MPCL 110.00 7 TN_IPP NA234 SERVALR1 110.00 1 TN_HYDRO NA235 SHARKA1 110.00 1 TN_HYDRO NA236 SHOYAR11 110.00 1 TN_HYDRO NA237 SHOYAR11 110.00 2 TN_HYDRO NA238 SHOYAR21 110.00 1 TN_HYDRO NA239 SURLR1 110.00 1 TN_HYDRO NA240 VGTPP1 110.00 1 TN_GAS NA241 VGTPP1 110.00 2 TN_GAS NA242 AMBURTHA 110.00 1 KA_HYDRO NA243 THOTIAR 220.00 1 KL_IPP NA244 MNKLM 220.00 1 KL_IPP NA245 BBGTPP1 110.00 1 TN_GAS NA246 BBGTPP1 110.00 2 TN_GAS NA247 BBGTPP1 110.00 3 TN_GAS NA248 BBGTPP1 110.00 4 TN_GAS NA249 ETPS1 110.00 1 TN_THML NA250 ETPS1 110.00 2 TN_THML NA251 GMRVASA1 110.00 1 TN_IPP NA
5
Dynamic Study Data pending Annexure VII252 GMRVASA1 110.00 2 TN_IPP NA253 GMRVASA1 110.00 3 TN_IPP NA254 GMRVASA1 110.00 4 TN_IPP NA255 KUTGTP 110.00 1 TN_GAS NA256 KUTGTP 110.00 2 TN_GAS NA257 BSES1 110.00 1 KL_IPP NA258 BSES1 110.00 2 KL_IPP NA259 BSES1 110.00 3 KL_IPP NA260 BSES1 110.00 4 KL_IPP NA261 KONAJ 110.00 1 KA_THML NA262 KUGL1 110.00 1 KL_IPP NA263 KUGL1 110.00 2 KL_IPP NA264 KUGL1 110.00 3 KL_IPP NA265 KZTR 110.00 1 TN_THML NA266 MNYR 110.00 1 KL_IPP NA267 MNYR 110.00 2 KL_IPP NA268 MNYR 110.00 3 KL_IPP NA269 MNYR 110.00 4 KL_IPP NA270 KRISHNAPTNAM400.00 1 AP_THML NA
6
A. Generator data to be filled in the format given below
depending type of generator along with following data: 1. Generator capability curve.
2. Make of Generator.
3. Generator type: Gas/Steam/Hydro.
4. Machine MVA rating and p.u Source impedance on MVA Base.
5. Generator Transformer Details: Rating, %impedance, No of taps
Nominal tap, present tap etc
6. Contact person phone number in case of any clarification regarding
data
7. Generator Data to be filled:
a. Round Rotor Generator Model:
Note:Xd, Xq, X’d, X’q, X"d, X"q, X1, H, and D are in pu on machine MVA base.
b. Salient Pole Generator Model:
Note: Xd, Xq, X’d, X"d, X"q, X1, H, and D are in pu on machine MVA base.
Xd- Direct Axis Positive phase Sequence Synchronous Reactance
Xq- Quadrature Axis Positive phase Sequence Synchronous Reactance
X’d- Direct Axis Transient Reactance(unsaturated)
X’q- Quadrature Axis Transient Reactance(unsaturated)
X’d- Direct Axis Sub-Transient Reactance(unsaturated)
X’q- Quadrature Axis Sub-Transient Reactance
T’do –Direct axis transient open circuit time constant (Secs)
T’qo –Quadraturet axis transient open circuit time constant (Secs)
T”do –Direct axis Subtransient open circuit time constant (Secs)
T”qo –Quadrature axis Subtransient open circuit time constant (Secs)
H- Inertia of complete turbogenerator(MWs/MVA)
s- saturation factor
B. Excitation system: Data for the type of excitation system in the generator along with block
diagram to be given. 2 Nos. Sample data/Block diagrams are given for IEEE type2
and simple model.
a. IEEE Type 2 Excitation System:
Note: for E1, SE(E1),E2, SE(E2) – Excitation curve i.e) Efd Vs If curve is required
b. Simple exciter model:
Set CSWITCH = 0 for bus fed. Set CSWITCH = 1 for solid fed.
Set CON (J+7) = 0 for exciter with negative field current capability.
Set CON (J+7) > 0 for exciter without negative field current capability. (Typical CON (J+7) = 10.)
C. Governor Data:
a. Hydro Turbine-Governor:
b. Steam Turbine-Governor:
Note: VMAX, VMIN, Dt are in per unit on generator base.
T2/T3 = high-pressure fraction.
T3 = reheater time constant.
c. Gas Turbine-Governor:
D. Power System Stabilizer Model(PSS):
E. HVDC Model:
a. DC Line Model:
b. DC Line auxiliary signal Model: