Report 19122016

(1)

00 RC CBR

Revision Reviewed Approve_d

CLIENT RENEW SAUR URJA PVT LTD

PROJECT 30MWp SPV PROJECT AT MALKANOOR,TELANGANA

CONTRACTOR LARSEN & TOUBRO,NAVI,MUMBAI

Initial Submission 18/12/2016 CBR

Revision Particulars Date Checked

RENEW SAUR URJA PVT LTD

GURGAON,HARYANA

(2)

Sl.No

Descriptiion

Page No

1 Executive Summary

3

2 Reference Documents

4

3 Device Details

5

4 Single line diagram

6

5 Short Circuit Current Details

8

6 Transformer Relay Setting Calculations

18

7 Setting Details for Line Control Panel

20

8 Setting Details for Transformer Control Panel

26

9 Setting Details for Feeder Control Panel

31

10 Setting Details for 33 kV Switch Board

38

11 Time Current Characteristic Curves

48

(3)

Introduction

Project:

30MWp SPV Project at Malkanoor,Telangana

Owner:

Renew Saur Urja Pvt Ltd

Electrical Contractor:

L&T, Navi,Mumbai

ElectricalDistribution System

132kV,33 kV,0.380 kV Power Distribution System

Power System Data

Max Source Fault level (assumed) 25kA for 1 secs at 33 kV

Tools used:

Paladin Design Base 5- an Electrical Design software

Protection Coordination

Selectivity of relays were worked out based on the rating of

transformers,cable size and flow of short circuit currents.

Time current characterstic curves are generated for every path and

verified .

Input Data

The SLD,Control and Relay panel drawings,Transformer Data sheets

Conclusion

Settings for each device,short circuit currents at every busbars,detailed

calculations for the settings are given in the following pages.

(4)

Sl.No Details File reference

1 132kV Switchyard SLD SLD_Mulkanoor.pdf

2 33kV ICOG Panel Drawing-400-29.08.16.pdf

3 33kV SwitchBoard Drawing-200-29.08.16.pdf

4 33kV Feeder -1&2 Control & Protection Panel 33KV TWIN FEEDER 1 & 2_REV-B_17.11.2016.pdf

5 132/33kV,25/30MVA Power Transformer Control & Protection Panel 132_33KV,25_30MVA TRANSFORMER CONTROL & PROTECTION

PANEL_REV-6 ACSLD ACSLD FOR FOR 30MW MULKANOOR PROJECT_TELANGANA 31 08 2016-Model.pdf

7 30 MVA,Transformer Data sheets GTP-T-05516-4.pdf

8 132kV Switchyard Single line Diagram RP-5212-DWG-ELE-AC-002-R2-132kV Switchyard SLD.DWG

9 132kV Line Control & Protection Panel 132KV LINE CONTROL & PROTECTION PANEL_REV-B_17.11.2016.pdf 10 Technical Specification of Grid Connected PhotoVoltaic Inverter PVL-L1000E_INVERTER-TECHNICAL.pdf

11 Rated Specification of the Inverter (PVL-L1000E) TMEIC INVERTER-1000KW-DATA SHEET.pdf

Reference Documents / Drawings

(5)

Details of Equipment kVA rating High Voltage side Low voltage side Percentage Impedance

Low winding High winding Grounding Mode Vector

Group

Type of

Cooling Supply Variation on Primary side Main Power Transformer

Transformer 30000 132000 33000 12.49 Star Star Direct YNyn0 ONAN/ONAF -25% to +5% in 24 steps

Inverter Transformers

5 Winding Transformer 4400 33000 V 380 3.20 Delta Star Direct YND AN

3 Winding Transformer 2200 33000 V 380 3.20 Delta Star Direct YND AN

Device Details

Transformers

(6)

(7)

GRIDAPTRANSCO C AB_ TR 1_ LV TR1 132bus_Grid 50 51 LINE RELAYS 132 kV Bus 50 51 TR1_RELAYS_HV TR_HT-132 BUS 50 51 TR1_RELAYS_LV 33kV BUS-TRafo LV 33 kV Main SWBD (100) C AB_ IC 1 33kV SWBD1 (200) UPS 1_INVR2 C AB_ 1IN VR 2 UPS 1_INVR3 C AB_ 1IN VR 3 UPS 1_INVR1 C AB_ 1IN VR 1 UPS 1_INVR4 C AB_ 1IN VR 4 58 UPS 2_INVR2 C AB: 2_ IN VR 2 UPS 2_INVR3 C AB: 2_ IN VR 3 UPS 2_INVR1 C AB: 2_ IN VR 1 UPS 2_INVR4 C AB: 2_ IN VR 4 UPS 3_INVR2 C AB: 3_ IN VR 2 UPS 3_INVR3 C AB: 3_ IN VR 3 UPS 3_INVR1 C AB: 3_ IN VR 1 UPS 3_INVR4 C AB: 3_ IN VR 4 86

icr8-33kv main board

91 4_ TR 1-BU S UPS 8_INVR2 C AB_ 8IN VR 2 UPS 8_INVR1 C AB_ 8IN VR 1

ICR1_TR ICR2_TR ICR3_TR ICR8_TR ICR4_TR

13 2 33kV SWBD2 (200) 7_TR1 7_ TR 1-BU S 7_TR2 7_TR3 7_TR4 4_PV1 4_PV2 4_PV3 4_PV4 UPS 4_INVR1 16 6 16 7 UPS 4_INVR2 UPS 4_INVR3 UPS 4_INVR4 17 1 172 173 17 4 175 176 17 7 178 179 180 1_PV1 18 2 1_PV2 18 4 1_PV3 18 6 1_PV4 18 8 2_PV1 19 0 2_PV2 19 2 2_PV3 19 4 2_PV4 19 6 3_PV1 19 8 3_PV2 20 0 3_PV3 20 2 3_PV4 20 4 8_PV11 20 6 8PV21 20 8 232 233 240 241 242 243 246 247 248 249 250 251 252 253 287 8_ TR 1-BU S 292 295 298 5_PV1 5_PV2 5_PV3 5_PV4 UPS 5_INVR1 30 8 30 9 UPS 5_INVR2 UPS 5_INVR3 UPS 5_INVR4 31 3 314 315 31 6 317 318 31 9 320 321 322 323 9_ TR 1-BU S 328 331 334 6_PV1 6_PV2 6_PV3 6_PV4 UPS 6_INVR1 ₃₄ 4 34 5 UPS 6_INVR2 UPS 6_INVR3 UPS 6_INVR4 34 9 350 351 35 2 353 354 35 5 356 357 358 36 2 363 367 372 7_PV1 7_PV2 UPS 7_INVR1 10 _PV 1-I N VR 1 10 _IN VR 1-T R UPS 7_INVR2 10 _IN VR 2-T R 10 _PV 2-I N VR 2 39 9 400 477 480 7 PV3 7 PV4 UPS 7 INV3 10 _IN VR 3-T R UPS 7 INV4 10 _IN VR 4-T R 49 1 49 2 10 _PV 3-I N VR 3 10 _PV 4-I N VR 4 icr2-33 kv bd 50 51 IC003_SWBD1 IC R 1-s w bd 1 50 51 IC0G0_PNL1 C AB_ IC 3 icr3-33kv bd 50 51 IC0G0_PNL2 50 6 50 51 OG000_SWBD1 50 51 FCP_IC1 50 51 508 50 51 IC003_SWBD2 497 510 50 51 511 50 51 512 50 51 IC0G0_PNL4 50 51 IC0G0_PNL3 50 51 IC0G0_PNL5 50 51 OG000_SWBD2 33kV PNL1 (400) 33kVPNL2(400) 33kVPNL3(400) 33kVPNL4(400) 33kVPNL5(400)

(8)

(9)

GRIDAPTRANSCO C AB_ TR 1_ LV TR1 132bus_Grid 50 51 LINE RELAYS 132 kV Bus 50 51 TR1_RELAYS_HV TR_HT-132 BUS 50 51 TR1_RELAYS_LV 33kV BUS-TRafo LV 33 kV Main SWBD (100) C AB_ IC 1 33kV SWBD1 (200) UPS 1_INVR2 C AB_ 1IN VR 2 UPS 1_INVR3 C AB_ 1IN VR 3 UPS 1_INVR1 C AB_ 1IN VR 1 UPS 1_INVR4 C AB_ 1IN VR 4 58 UPS 2_INVR2 C AB: 2_ IN VR 2 UPS 2_INVR3 C AB: 2_ IN VR 3 UPS 2_INVR1 C AB: 2_ IN VR 1 UPS 2_INVR4 C AB: 2_ IN VR 4 UPS 3_INVR2 C AB: 3_ IN VR 2 UPS 3_INVR3 C AB: 3_ IN VR 3 UPS 3_INVR1 C AB: 3_ IN VR 1 UPS 3_INVR4 C AB: 3_ IN VR 4 86

icr8-33kv main board

91 4_ TR 1-BU S UPS 8_INVR2 C AB_ 8IN VR 2 UPS 8_INVR1 C AB_ 8IN VR 1

ICR1_TR ICR2_TR ICR3_TR ICR8_TR ICR4_TR

13 2 33kV SWBD2 (200) 7_TR1 7_ TR 1-BU S 7_TR2 7_TR3 7_TR4 4_PV1 4_PV2 4_PV3 4_PV4 UPS 4_INVR1 16 6 16 7 UPS 4_INVR2 UPS 4_INVR3 UPS 4_INVR4 17 1 172 173 17 4 175 176 17 7 178 179 180 1_PV1 18 2 1_PV2 18 4 1_PV3 18 6 1_PV4 18 8 2_PV1 19 0 2_PV2 19 2 2_PV3 19 4 2_PV4 19 6 3_PV1 19 8 3_PV2 20 0 3_PV3 20 2 3_PV4 20 4 8_PV11 20 6 8PV21 20 8 232 233 240 241 242 243 246 247 248 249 250 251 252 253 287 8_ TR 1-BU S 292 295 298 5_PV1 5_PV2 5_PV3 5_PV4 UPS 5_INVR1 30 8 30 9 UPS 5_INVR2 UPS 5_INVR3 UPS 5_INVR4 31 3 314 315 31 6 317 318 31 9 320 321 322 323 9_ TR 1-BU S 328 331 334 6_PV1 6_PV2 6_PV3 6_PV4 UPS 6_INVR1 ₃₄ 4 34 5 UPS 6_INVR2 UPS 6_INVR3 UPS 6_INVR4 34 9 350 351 35 2 353 354 35 5 356 357 358 36 2 363 367 372 7_PV1 7_PV2 UPS 7_INVR1 10 _PV 1-I N VR 1 10 _IN VR 1-T R UPS 7_INVR2 10 _IN VR 2-T R 10 _PV 2-I N VR 2 39 9 400 477 480 7 PV3 7 PV4 UPS 7 INV3 10 _IN VR 3-T R UPS 7 INV4 10 _IN VR 4-T R 49 1 49 2 10 _PV 3-I N VR 3 10 _PV 4-I N VR 4 icr2-33 kv bd 50 51 IC003_SWBD1 IC R 1-s w bd 1 50 51 IC0G0_PNL1 C AB_ IC 3 icr3-33kv bd 50 51 IC0G0_PNL2 50 6 50 51 OG000_SWBD1 50 51 FCP_IC1 50 51 508 50 51 IC003_SWBD2 497 510 50 51 511 50 51 512 50 51 IC0G0_PNL4 50 51 IC0G0_PNL3 50 51 IC0G0_PNL5 50 51 OG000_SWBD2 33kV PNL1 (400) 33kVPNL2(400) 33kVPNL3(400) 33kVPNL4(400) 33kVPNL5(400)

(10)

Fault At Bus:

System Volt:

132000 Base Volt:

Fault Type :

Pre Fault

voltage

3-phase

L-L

L-G

L-L-G

Bus R RMS ( A ):

132000

275

0

409

0 Bus Y RMS ( A ):

132000

275

251

0

336 Bus B RMS ( A ):

132000

275

251

0

453 BRANCH NAME

PRE

FAULT

VOLTAGE

3 PHASE

FAULT

LL FAULT LG FAULT LLG

FAULT

GRID - 132KV BUS

132000

275

0

409

0

275

251

0

336

275

251

0

453 132kV BUS - TR_HV SIDE

132000

275

0

409

0

275

251

0

336

275

251

0

453 TR_LV SIDE - MAIN PNL

33000

1098

0 1635

0 1098

1005

0 1344

1098

1005

0 1813

MAIN PNL - SWBD1(200)

33000

439

0

654

0

439

402

0

538

439

402

0

726 MAIN PNL - ICR8_TR

33000

73

0

109

0

73

67

0

90

73

67

0

121 MAIN PNL - SWBD2(200)

33000

439

0

654

0

439

402

0

538

439

402

0

726 MAIN PNL - ICR7_TR

33000

146

0

218

0

146

134

0

179

146

134

0

242 SWBD1(200) - ICR1_TR

33000

146

0

218

0

146

134

0

179

146

134

0

242 SWBD1(200) - ICR2_TR

33000

146

0

218

0

146

134

0

179

146

134

0

242 SWBD1(200) - ICR3_TR

33000

146

0

218

0

146

134

0

179

146

134

0

242 SWBD2(200) - ICR4_TR

33000

146

0

218

0

146

134

0

179

146

134

0

242 APTRANSCO

132000 V

Steady State flow of Current

Bus Name : APTRANSCO

Short Circuit Report

(11)

BRANCH NAME

PRE

FAULT

VOLTAGE

3 PHASE

FAULT

LL FAULT LG FAULT LLG

FAULT

SWBD2(200) - ICR5_TR

33000

146

0

218

0

146

134

0

179

146

134

0

242 SWBD2(200) - ICR6_TR

33000

146

0

218

0

146

134

0

179

146

134

0

242 ICR1_TR - 1_INV1

380 3179

1679

2732

3030

3179

1679

2732

2246

3179

3358

0 3239

ICR1_TR - 1_INV2

380 3179

1679

2732

3030

3179

1679

2732

2246

3179

3358

0 3239

ICR1_TR - 1_INV3

380 3179

1679

2732

3030

3179

1679

2732

2246

3179

3358

0 3239

ICR1_TR - 1_INV4

380 3179

1679

2732

3030

3179

1679

2732

2246

3179

3358

0 3239

ICR2_TR - 2_INV1

380 3179

1679

2732

3030

3179

1679

2732

2246

3179

3358

0 3239

ICR2_TR - 2_INV2

380 3179

1679

2732

3030

3179

1679

2732

2246

3179

3358

0 3239

ICR2_TR - 2_INV3

380 3179

1679

2732

3030

3179

1679

2732

2246

3179

3358

0 3239

ICR2_TR - 2_INV4

380 3179

1679

2732

3030

3179

1679

2732

2246

3179

3358

0 3239

ICR3_TR - 3_INV1

380 3179

1679

2732

3030

3179

1679

2732

2246

3179

3358

0 3239

ICR3_TR - 3_INV2

380 3179

1679

2732

3030

3179

1679

2732

2246

3179

3358

0 3239

ICR3_TR - 3_INV3

380 3179

1679

2732

3030

3179

1679

2732

2246

3179

3358

0 3239

(12)

BRANCH NAME

PRE

FAULT

VOLTAGE

3 PHASE

FAULT

LL FAULT LG FAULT LLG

FAULT

ICR8_TR - 8_INV2

380 3179

1679

2732

3030

3179

1679

2732

2246

3179

3358

0 3239

ICR4_TR - 4_INV1

380 3179

1679

2732

3030

3179

1679

2732

2246

3179

3358

0 3239

ICR4_TR - 4_INV2

380 3179

1679

2732

3030

3179

1679

2732

2246

3179

3358

0 3239

ICR4_TR - 4_INV3

380 3179

1679

2732

3030

3179

1679

2732

2246

3179

3358

0 3239

ICR4_TR - 4_INV4

380 3179

1679

2732

3030

3179

1679

2732

2246

3179

3358

0 3239

ICR5_TR - 5_INV1

380 3179

1679

2732

3030

3179

1679

2732

2246

3179

3358

0 3239

ICR5_TR - 5_INV2

380 3179

1679

2732

3030

3179

1679

2732

2246

3179

3358

0 3239

ICR5_TR - 5_INV3

380 3179

1679

2732

3030

3179

1679

2732

2246

3179

3358

0 3239

ICR5_TR - 5_INV4

380 3179

1679

2732

3030

3179

1679

2732

2246

3179

3358

0 3239

ICR6_TR - 6_INV1

380 3179

1679

2732

3030

3179

1679

2732

2246

3179

3358

0 3239

ICR6_TR - 6_INV2

380 3179

1679

2732

3030

3179

1679

2732

2246

3179

3358

0 3239

ICR6_TR - 6_INV3

380 3179

1679

2732

3030

3179

1679

2732

2246

3179

3358

0 3239

ICR6_TR - 6_INV4

380 3179

1679

2732

3030

3179

1679

2732

2246

3179

3358

0 3239

ICR7_TR - 7_INV1

380 3179

1679

2732

3030

3179

1679

2732

2246

3179

3358

0 3239

(13)

BRANCH NAME

PRE

FAULT

VOLTAGE

3 PHASE

FAULT

LL FAULT LG FAULT LLG

FAULT

ICR7_TR - 7_INV2

380 3179

1679

2732

3030

3179

1679

2732

2246

3179

3358

0 3239

ICR7_TR - 7_INV3

380 3179

1679

2732

3030

3179

1679

2732

2246

3179

3358

0 3239

ICR7_TR - 7_INV4

380 3179

1679

2732

3030

3179

1679

2732

2246

3179

3358

0 3239

1_INV1 - 1_PV1

380 1882

1859

1517

1884

1_INV2 - 1_PV2

380 1882

1859

1517

1884

1_INV3 - 1_PV3

380 1882

1859

1517

1884

1_INV4 - 1_PV4

380 1882

1859

1517

1884

2_INV1 - 2_PV1

380 1882

1859

1517

1884

2_INV2 - 2_PV2

380 1882

1859

1517

1884

2_INV3 - 2_PV3

380 1882

1859

1517

1884

2_INV4 - 2_PV4

380 1882

1859

1517

1884

3_INV1 - 3_PV1

380 1882

1859

1517

1884

3_INV2 - 3_PV2

380 1882

1859

1517

1884

3_INV3 - 3_PV3

380 1882

1859

1517

1884

3_INV4 - 3_PV4

380 1882

1859

1517

1884

4_INV1 - 4_PV1

380 1882

1859

1517

1884

4_INV2 - 4_PV2

380 1882

1859

1517

1884

4_INV3 - 4_PV3

380 1882

1859

1517

1884

4_INV4 - 4_PV4

380 1882

1859

1517

1884

5_INV1 - 5_PV1

380 1882

1859

1517

1884

5_INV2 - 5_PV2

380 1882

1859

1517

1884

5_INV3 - 5_PV3

380 1882

1859

1517

1884

5_INV4 - 5_PV4

380 1882

1859

1517

1884

6_INV1 - 6_PV1

380 1882

1859

1517

1884

6_INV2 - 6_PV2

380 1882

1859

1517

1884

6_INV3 - 6_PV3

380 1882

1859

1517

1884

6_INV4 - 6_PV4

380 1882

1859

1517

1884

7_INV1 - 7_PV1

380 1882

1859

1517

1884

7_INV2 - 7_PV2

380 1882

1859

1517

1884

7_INV3 - 7_PV3

380 1882

1859

1517

1884

7_INV4 - 7_PV4

380 1882

1859

1517

1884

8_INV1 - 8_PV1

380 1882

1859

1517

1884

8_INV2 - 8_PV2

380 1882

1859

1517

1884

(14)

Residual Voltage Summary Results: 0.5 Cycle--Symmetrical

Bus Name

Pre Fault voltage

in Volts

Residual voltage in

Volts

APTRANSCO

132000

0 132 kV Bus

132000

0 33 kV Main SWBD (100)

33000

4684

33kV SWBD1 (200)

33000

4685

33kV SWBD2 (200)

33000

4686

1_INVR1

380

72 1_INVR2

380

72 1_INVR3

380

72 1_INVR4

380

72 2_INVR1

380

72 2_INVR2

380

72 2_INVR3

380

72 2_INVR4

380

72 3_INVR1

380

72 3_INVR2

380

72 3_INVR3

380

72 3_INVR4

380

72 4_INVR1

380

72 4_INVR2

380

72 4_INVR3

380

72 4_INVR4

380

72 5_INVR1

380

72 5_INVR2

380

72 5_INVR3

380

72 5_INVR4

380

72 6_INVR1

380

72 6_INVR2

380

72 6_INVR3

380

72 6_INVR4

380

72 7_INVR1

380

72 7_INVR2

380

72 7_INVR3

380

72 7_INVR4

380

72 8_INVR1

380

72 8_INVR2

380

72 Fault At Bus : APTRANSCO

(15)

Residual Voltage Summary Results: 0.5 Cycle--Symmetrical

Bus Name

Pre Fault voltage

in Volts

Residual voltage in

Volts

APTRANSCO

132000

71801

132 kV Bus

132000

71801

33 kV Main SWBD (100)

33000

17950

33kV SWBD1 (200)

33000

17950

33kV SWBD2 (200)

33000

17950

1_INVR1

380

211 1_INVR2

380

211 1_INVR3

380

211 1_INVR4

380

211 2_INVR1

380

211 2_INVR2

380

211 2_INVR3

380

211 2_INVR4

380

211 3_INVR1

380

211 3_INVR2

380

211 3_INVR3

380

211 3_INVR4

380

211 4_INVR1

380

211 4_INVR2

380

211 4_INVR3

380

211 4_INVR4

380

211 5_INVR1

380

211 5_INVR2

380

211 5_INVR3

380

211 5_INVR4

380

211 6_INVR1

380

211 6_INVR2

380

211 6_INVR3

380

211 6_INVR4

380

211 7_INVR1

380

211 7_INVR2

380

211 7_INVR3

380

211 7_INVR4

380

211 8_INVR1

380

211 8_INVR2

380

211 LL Fault

(16)

Residual Voltage Summary Results: 0.5 Cycle--Symmetrical

Bus Name

Pre Fault voltage

in Volts

Residual voltage in

Volts

APTRANSCO

132000

0 132 kV Bus

132000

0 33 kV Main SWBD (100)

33000

5792

33kV SWBD1 (200)

33000

5796

33kV SWBD2 (200)

33000

5798

1_INVR1

380

68 1_INVR2

380

68 1_INVR3

380

68 1_INVR4

380

68 2_INVR1

380

68 2_INVR2

380

68 2_INVR3

380

68 2_INVR4

380

68 3_INVR1

380

68 3_INVR2

380

68 3_INVR3

380

68 3_INVR4

380

68 4_INVR1

380

68 4_INVR2

380

68 4_INVR3

380

68 4_INVR4

380

68 5_INVR1

380

68 5_INVR2

380

68 5_INVR3

380

68 5_INVR4

380

68 6_INVR1

380

68 6_INVR2

380

68 6_INVR3

380

68 6_INVR4

380

68 7_INVR1

380

68 7_INVR2

380

68 7_INVR3

380

68 7_INVR4

380

68 8_INVR1

380

68 8_INVR2

380

68 LGFault

(17)

Residual Voltage Summary Results: 0.5 Cycle--Symmetrical

Bus Name

Pre Fault voltage

in Volts

Residual voltage in

Volts

APTRANSCO

132000

36974

132 kV Bus

132000

36974

33 kV Main SWBD (100)

33000

11122

33kV SWBD1 (200)

33000

11120

33kV SWBD2 (200)

33000

11120

1_INVR1

380

124 1_INVR2

380

124 1_INVR3

380

124 1_INVR4

380

124 2_INVR1

380

124 2_INVR2

380

124 2_INVR3

380

124 2_INVR4

380

124 3_INVR1

380

124 3_INVR2

380

124 3_INVR3

380

124 3_INVR4

380

124 4_INVR1

380

124 4_INVR2

380

124 4_INVR3

380

124 4_INVR4

380

124 5_INVR1

380

124 5_INVR2

380

124 5_INVR3

380

124 5_INVR4

380

124 6_INVR1

380

124 6_INVR2

380

124 6_INVR3

380

124 6_INVR4

380

124 7_INVR1

380

124 7_INVR2

380

124 7_INVR3

380

124 7_INVR4

380

124 8_INVR1

380

124 8_INVR2

380

124 Fault At Bus : APTRANSCO

(18)

Transformer capacity

P

T

30000

kVA

Primary Voltage

Vp

132 kV

Secondary Voltage

Vs

33 kV

Transformer HV side CT details CTHV

200/1

Turns Ratio

CTR1 200

Transformer LV side CT details CTLV

600/1

Turns Ratio

CTR2 600

Percentage Impedance of Transformer

Z

12.50%

Fault Current at 33 kV Bus (Grid operation)

9274

A

Fault current at 132kV Bus as per report (Grid operation)

35502

A

Transformer Full Load HV side Primary Current at 0% tapping

Ipfl

30000X 1000 )/ (1.732

X132x1000x1)

Amps

Transformer HV side current as per name plate

131.22 Amps

Relay drop off Ratio

0.95 HV Pick up Current

1.05 x HV Currrent/ Drop off ratio

=1.05x 131.21/0.95

145.03 Transformer HV side CT Secondary Pick up Current

Isfl

0.73 IDMT setting at 132 kV side

0.7 Setting proposed on HV side Ip

0.7 Curve

Normal Inverse

Transformer Full Load LV side Current at 0% tapping

30000X 1000 )/ (1.732

X33x1000x1)

Amps

Transformer LV side Primary current as per name plate

524.88 Amps

Relay drop off Ratio

0.95 LV Pick up Current

1.1 x HV Currrent/ Drop off ratio

=1.1 x 437.40/0.95

607.75 Transformer LV side CT Secondary Pick up Current

Isfl

1.01 IDMT setting at 33 kV side

1 Setting proposed on LV side Ip

1 Curve

Normal Inverse

Transformers Relay Setting Calculations

Setting Calculation for Power Transformers

33kV

CT

LV

:600/1 A

CT

HV

:200/1

30 MVA

132kV

(19)

Transformer capacity

P

T

4400

kVA

Primary Voltage

Vp

33 kV

Secondary Voltage

Vs

0.38 kV

Transformer HV side CT details CTHV

80/1

Turns Ratio

CTR1 80

Transformer HV side CT details CTLV

600/1

Turns Ratio

CTR2 600

Percentage Impedance of Transformer

Z

3.20%

Fault Current at 0.380 kV Bus (Grid operation)

9274

A

Fault current at 33 kV Bus as per report (Grid operation)

35502

A

Transformer Full Load HV side Primary Current at 0% tapping

Ipfl

4400X 1000 )/ (1.732

X33x1000x1)

Amps

Transformer HV side current as per name plate

76.98 Amps

Relay drop off Ratio

0.95 HV Pick up Current

1.1 x HV Currrent/ Drop off ratio

=1.1 x 76.98/0.95

89.14 Transformer HV side CT Secondary Pick up Current

Isfl

1.10 IDMT setting at 33kV side

1.1 Setting proposed on HV side Ip

1.1 Curve

Normal Inverse

Setting Calculation for Inverter Transformers

0.380kV

CT

HV

:100/1

4.4MVA

33kV

(20)

(21)

Address Setting Title Setting Range

Fault Records Enabled/Disabled Enabled

Function 87 Function 21 Function 99-LV Other functions are disabled

CT Ratio on 132 kV side 300/1:In=300 PT Ratio 132 kV/√ 3 : 110V/√ 3

Parameter Function Value (Range) Set Value Set unit Primary Value

Diff.Prot ON/OFF ON

Differential Current Monitoring I-Diff> Mon ON/OFF ON

Pick up value of differential current I-diff> 0.05..2 I/InO 0.2

T I-diff> time delay T I-diff> 0.00..60.00 s 0 sec

Pick up value of High set trip I-diff>> 0.5..35 I/InO 8

T I-diff>> time delay T I-diff>> 0.00..60.00 s 0 sec

Slope 1 of tripping charecterstic Slope 1 0.1..0.5 0.2

Base point for slope1 of charecterstic Base point 1 0.00..2 I/InO 0

Slope 2 of tripping charecterstic Slope 2 0.25..0.95 0.7

Base point for slope2 of charecterstic Base point 2 0.00..10 I/InO 4.5

Pick up for add on stablisation I Add on stab 2..15 I/InO 4

Duration for add on stablisation T Add on stab 2..250 Cycles 15

Setting

• Power System Data 1

Line Differential Protection 87

Setting Details for 132kV ,Line Control & Protection Panel

Line Protection

Relay settings for relays located in the Protection Panel

Relay Located in Protection Panel MiCOM P543 Multi Function Relay • SCOPE OF FUNCTION

(22)

Parameter Unit Parameter Range Settings

kV Unom PRIMARY in kV 1.0 .. 1200.0 kV 132

V Unom Secondary in Volts 80..125 110

A CT Primary in Amps 10~5000 300

A CT Secondary in Amps 1A/5A 1

SystemStarpoint Solid Earthed

Peterson-Coil Isolated SolidEarthed

Uph / Udelta 0.10 .. 9.99 1.73

Rated Frequency 50/60 Hz 50 Hz

Phase Seq L1 L2 L3

L1 L3 L2 L1 L2 L3

Distance Unit km/Miles km

kV Full scale volt 1.0~1200 132

A Full scale Current 10~5000 300

deg Line Angle 10~89 deg 55.45

P,Q sign Not reversed

Reversed notreversed

ohms/km R 0.168

ohms/km x1 0.0050~9.5 0.44

mfd / km c' 0.0~100 0.0081

km Line length 0.1~1000 18

ZL1 mag Ohms Line Positive Sequence impedance (mag) 5.33

ZL1 ang deg Line Positive Sequence impedance (Phase angle ) 55.45

ZL0 mag Ohms Line Zero Sequence impedance (mag) 13.719

ZL0 ang deg Line Zero Sequence impedance (Phase angle ) 70.8

KZ0 mag Ohms Default residual compensation factor (mag) 0.543

KZ0 ang deg Default residual compensation factor (Phase angle) 24.77

Z1mag Ohms Zone 1 reach impedance setting (mag) 1.06

Z1ang deg Zone 1 reach impedance setting (Phase angle) 55.45

R1 Ph max Ohms Phase fault resistive reach value 0.7

R1 Ph min Ohms Phase fault resistive reach value 2.1

R1ph sec Time delay Zone 1 0

R2ph sec Time delay Zone 2 0.4

TZ1 sec Time delay Zone 3 0.8

TZ2 sec Time delay Zone 4 0.25

R1G Ohms Ground fault resistive reach value zone 1 4

R2G Ohms Ground fault resistive reach value zone 2 5.3

Zone 1 Z1 0.605+J0.878 Z0 0.900+j2.592 Zone 2 Z1 0.907+J1.318 Z0 1.35+j3.88 Zone 3 Z1 1.512+J2.196 Z0 2.25+j6.48 Zone 4 Z1 0.151+J0.220 Z0 0.225+j0.648 Distance Protection 21

(23)

Function 50 Function 51 Function 50N Function 51N Function 67 Function 67N Function 59 Other functions are disabled

Setting name Units Range Setting unit Prim Value

50-2 pickup I> > 0.1~40.00 A 1.5 x In 450

50-2 Delay T I>> 0.00..150.00 s 0.15 s

51-1Pickup I> 0.01~8.00A 0.45 x In 135

51-1Delay tI> 0.00..150.00 s NA s

Time dial I> TMS 0.02~1.5 0.05 s

IEC Curve Standard Inverse(SI) ,Very

Inverse(VI) ,Extremely Inverse(EI)

Standard Inverse

50N-2 Pickup Ie>> >> 0.1~40.00 A 1 x In 200

50N-2 Delay Te>>>> 0.00..150.00 s 0.3 s

51N-1Pickup Ie> 0.01~8.00A 0.08 x In 16

51N-1Delay TIe> 0.00..150.00 s NA s

Time dial Ie> TMS 0.02~1.5 0.07

Standard Inverse

50-2 pickup I> > 0.1~40.00 A 1.5 x In 450

50-2 Delay T I>> 0.00..150.00 s 0.15 s

51-1Pickup I> 0.1~40.00 A 0.45 x In 135

51-1Delay tI> 0.00..150.00 s NA s

Time dial I> TMS 0.02~1.5 0.05 s

Standard Inverse

50N-2 Pickup Ie>> >> 0.1~40.00 A 1 x In 200

50N-2 Delay Te>>>> 0.00..150.00 s 0.3 s

51N-1Pickup Ie> 0.1~40.00 A 0.08 x In 16

51N-1Delay TIe> 0.00..150.00 s NA s

Time dial Ie> TMS 0.02~1.5 0.07

Standard Inverse • Directional Phase over current Protection: 67

• Over voltage Protction 59

• Directional Ground over current Protection: 67 N • Power System Data 1

CT Ratio on 132 kV side 300/1:In=300 PT Ratio 132 kV/√ 3 : 110V/√ 3

• Non Directional Phase over current Protection: 51

• Non Directional Ground over current Protection: 51 N

Relay settings for relays located in the Protection Panel Bay Control Unit

Relay Located in Protection Panel MiCOM C264P Multi Function Relay • SCOPE OF FUNCTION

(24)

Name of Substation = 132 kV Mulkanoor SS S/S

Mulkanoor SS APTRANSCO SS

18km

CTR = 300/ 1 300

PTR = 132000/ 110 1200

Protected Line parameters: Per kilometer

Line Z1 = 0.168+ j 0.244 = 0.29624 55.45 per km

Zero seq Z0 = 0.25+ j 0.72 = 0.76217 70.85 per km

Line distance 18km

MULKANOOR SS to APTRANSCO SS

Line parameters Z1 18 x(0.168+j0.244) 3.024+ j 4.392 = 5.33238 55.45 Z0 18 x(0.25+j0.72) 4.5+ j 12.96 = 13.719 70.85 Zone 1 reach = 80% of Zone 2 reach = 120% of Zone 3 reach = 200% of Zone 4 reach = 20% of

Ratio of Secondary to Primary Impedance =CTR/PTR = 0.250

Zone 1 Phase Reach Settings

Required Zone 1 reach = 80 % of Protected line length x Z1 x CTR/PTR 0.8 x(3.024+j4.392)x 0.250

0.605+ j 0.878 = 1.06648 55.45 Zero seq Zone 1 reach 80 % of Protected line length x Z0 x CTR/PTR

0.8 x(4.5+j12.96)x 0.250

0.900+ j 2.592 = 2.7438 70.85 Required Zone2 reach = 120 % of Protected line length x Z1 x CTR/PTR

1.2 x(3.024+j4.392)x 0.250

1.2 x(4.5+j12.96)x 0.250

1.350+ j 3.8880 = 4.11571 70.85 Required Zone 3 reach = 200 % of Protected line length x Z1 x CTR/PTR

2 x(3.024+j4.392)x 0.250

1.512+ j 2.196 = 2.66619 55.45

Distance Relay Setting Calculations

protected line protected line protected line protected line Mulkanoor SS to APTRANSCO SS

(25)

0.2 x(3.024+j4.392)x 0.250

0.2 x(4.5+j12.96)x 0.104

0.225+ j 0.648 = 0.68595 70.85 max load on line 131.22 Amps

system voltage 132 kV

Z load 580.7992 Ohms

Z load Sec 145.1998

angle 25 deg

line

Resistive Reach Calculations

All distance elements must avoid the heaviest system loading. Taking the 1 A CT secondary rating as a guide to the maximum load current, the minimum load impedance

presented to the relay would be: Vn (phase-neutral) / In = 132 /₃ 1 = 76.21024

Typically, phase fault distance zones would avoid the minimum load impedance by a margin of ≥40% if possible (bearing in mind that the power swing characteristic surrounds the tripping zones), earth fault zones would use a ≥20% margin. This allows maximum resistive reaches of 45.72614 for Phase faults

& 60.96819 for Earth faults Taking a required primary resistive coverage of 7Ω for phase faults, and assuming a typical earth fault coverage of 20Ω, for earth faults

the minimum secondary reaches become:

RPh (min) = 7 x 0.25 1.8 Ω (secondary);

RG (min) = 20 x 0.25 5 Ω (secondary).

RPh (max) = 46 x 0.25 11 Ω (secondary);

RG (max) = 61 x 0.25 15 Ω (secondary).

Resistive reaches could be chosen between the calculated values as shown in Table The zone 2 elements satisfy R2Ph ≤ (R3Ph x 80%), and R2G ≤ (R3G × 80%).

(26)

SETTING DETAILS FOR TRANSFORMER

CONTROL PANEL

(27)

Fault Records Enabled/Disabled Enabled Function 87

Function 64R Function 99-LV Other functions are disabled

CT Ratio on 33 kV side 600/1:In=600 CT Ratio on 132 kV side 200/1:In=200 CT Ratio for LV NCT LV 750/1:In=750 CT Ratio for HV NCT HV 200/1:In=200 PT Ratio 33 kV/√ 3 : 110V/√ 3

DIFF: Idiff> SGx 0.10 Iref - 2.50 Iref 0.10 Iref x Iref DIFF: Idiff>> SGx 30.0 Iref 0.1 Iref 2.5 Iref-30.0 Iref 4.0 Iref x Iref DIFF: Idiff>>> SGx Blocked/ 2.5 Iref - 30.0 Iref 4 x Iref

DIFF: m1 SGx 0.10 - 1.50 0.30

DIFF: m2 SGx 0.10 - 1.50 0.8

DIFF: IR, m2 SGx 1.5 Iref - 10.0 Iref 4.0 Iref x Iref DIFF: Op.del., trip sig. SGx 0.00 s -100.00 s 0.00 s sec

Is2 1 x Iref

IS-HS1 4 x Iref

IS-HS2 4 I ref

2nd harmonic Block Enabled

Ih(2)%> 10 %

5nd harmonic Block Enabled

Ih(5)%> 20 %

IREF > K1 Blocked/ 0.05 In -1.00 In 0.1 x In 20

t ref > Time delay Blocked/ 0.00 s - 10.00 s 0

State of the Overflux Protection ON

Pick up Value Warning Stage U/f 1.0~1.2 1.1V/Hz

Time delay for Warning Stage U/f 0~60 sec 1sec

V/Hz >1 Status Enabled

V/Hz >1 Trip Func IDMT

V/Hz >1 Trip Set 2.53V/Hz V/Hz

V/Hz >1 Trip TMS 0.1

V/Hz >1 tReset 0sec

Tpre-Trip Alarm 1.0~1.4 200sec

Time for cooldown 0~1000 sec 45

Adaption Factors 0.5~2.0 1

Over Flux Protection LV

Restricted Earth fault Protection 64R

Differential Protection Relay-87T/64R

Relay Located in Protection Panel +1TR1A MiCOM P643 Multi Function Relay • SCOPE OF FUNCTION

Setting

Transformer Differential Protection 87

Setting Details for 132/33 kV ,25/30 MVA Power Transformer -Control & Protection Panel

Transformer Feeder protection for Power Transformer

(28)

Fault Records Enabled/Disabled Enabled Function 51N

Function 99-HV Other functions are disabled

CT Ratio for LV NCT LV 750/1:In=750 CT Ratio for HV NCT HV 200/1:In=200 PT Ratio 132 kV/√ 3 : 110V/√ 3

IN 1 > 1 Current Set Blocked/ 0.08 In - 4.00 In 0.1 x In 20 IN 1 > 1 Function IEC Curve Definite Time IEC

Standard Inverse IEC Very Inverse IEC Extr. Inverse IEC Long Time Inv. IEEE Moderately Inv. IEEE Very Inverse IEEE Extr. Inverse ANSI Normally Inv. ANSI Short Time Inv. ANSI Long Time Inv. RI-Type Inverse RXIDG-Type Inverse

-Definite Time

IN 1 > 1 TMS 0.025 - 1.2 1 sec

IN 1 > 1 Current Set Blocked/ 0.08 In - 4.00 In 0.1 x In 75 IN 1 > 1 Function IEC Curve Definite Time IEC

Standard Inverse IEC Very Inverse IEC Extr. Inverse IEC Long Time Inv. IEEE Moderately Inv. IEEE Very Inverse IEEE Extr. Inverse ANSI Normally Inv. ANSI Short Time Inv. ANSI Long Time Inv. RI-Type Inverse RXIDG-Type Inverse

-Definite Time

IN 1 > 1 TMS 0.025 - 1.2 1 sec

State of the Overflux Protection ON

Pick up Value Warning Stage U/f 1.0~1.2 1.1V/Hz

Time delay for Warning Stage U/f 0~60 sec 1sec

V/Hz >1 Status Enabled

V/Hz >1 Trip Func IDMT

V/Hz >1 Trip Set 2.53V/Hz V/Hz

V/Hz >1 Trip TMS 0.1

V/Hz >1 tReset 0sec

Tpre-Trip Alarm 1.0~1.4 200sec

Time for cooldown 0~1000 sec 45

Adaption Factors 0.5~2.0 1

Standby Earth Fault Protection 51N HV

Over Flux Protection HV

Standby Earth Fault Protection 51N LV

SEF & Over Fluxing Protection -99HV/51N

Relay Located in Protection Panel +1TR1A MiCOM P642 Multi Function Relay • SCOPE OF FUNCTION

Setting

(29)

Fault Records Enabled/Disabled Enabled Function 50

Function 51 Function 50N Function 51N Function 50BF Other functions are disabled

50-2 pickup I> > 0.1~40.00 A 1.5 x In 300

50-2 Delay T I>> 0.00..150.00 s 0.3 s

51-1Pickup I> 0.01~8.00A 0.7 x In 140

51-1Delay tI> 0.00..150.00 s NA s

Time dial I> TMS 0.02~1.5 0.06 s

IEC Curve Standard Inverse(SI)

,Very Inverse(VI) ,Extremely Inverse(EI)

Standard Inverse

50N-2 Pickup Ie>> >> 0.1~40.00 A 1 x In 200

50N-2 Delay Te>>>> 0.00..150.00 s 0.3 s

51N-1Pickup Ie> 0.01~8.00A 0.1 x In 20

51N-1Delay TIe> 0.00..150.00 s NA s

Time dial Ie> TMS 0.02~1.5 0.13

Standard Inverse

CB Fail 1 Status Enabled/Disabled Enabled

CB Fail 1 Timer 0-10 0.05 sec

I< Current Set 5 %

CB Fail 2 Status Enabled/Disabled Enabled

CB Fail 2 Timer 0-10 0.2 sec

I< Current Set 10 %

Bay Control Unit for HV -BCPU HV

Relay Located in Protection Panel +1TR1A MiCOM C264P Multi Function Relay

CT Ratio on 132 kV side 200/1:In=200 PT Ratio 132 kV/√ 3 : 110V/√ 3 • SCOPE OF FUNCTION

Setting

Relay settings for relays located in the Protection Panel +1TR1A

(30)

Relay type: Schneider Electric C 264P

Fault Records Enabled/Disabled Enabled Function 50/51

Function 50N/51N Other functions are disabled

Title Setting Range CTs

CT rated primary 10..50000 A 600A CT rated secondary 1 A / 5 A 1A

50-2 pickup I> > 0.1~40.00 A 2.1 x In 1260

50-2 Delay T I>> 0.00..150.00 s 0.45 s

51-1Pickup I> 0.01~8.00A 1 x In 600

51-1Delay tI> 0.00..150.00 s NA s

Time dial I> TMS 0.02~1.5 0.07 s

Standard Inverse

50N-2 Pickup Ie>> >> 0.1~40.00 A 1 x In 600

50N-2 Delay Te>>>> 0.00..150.00 s 0.45 s

51N-1Pickup Ie> 0.01~8.00A 0.1 x In 60

51N-1Delay TIe> 0.00..150.00 s NA s

Time dial Ie> TMS 0.02~1.5 0.21

Standard Inverse Relay Located in Protection Panel +1TR1B MiCOM C264P Multi Function Relay

Setting

• Non Directional Ground over current Protection: 51 N CT Ratio on 33kV side 600/1:In=600

33000V Outgoing to Transformer • SCOPE OF FUNCTION

Setting

Relay settings for relays located in the Protection Panel +1TR1B

(31)

SETTING DETAILS FOR FEEDER

CONTROL PANEL

(32)

50-2 pickup I> > 0.1~40.00 A 1.8 x In 450

50-2 Delay T I>> 0.00..150.00 s 0.6 s

51-1Pickup I> 0.1~40.00 A 0.9 x In 225

51-1Delay tI> 0.00..150.00 s NA s

Time dial I> TMS 0.02~1.5 0.08 s

Standard Inverse

50N-2 Pickup Ie>> >> 0.1~40.00 A 0.9 x In 225

50N-2 Delay Te>>>> 0.00..150.00 s 0.6 s

51N-1Pickup Ie> 0.1~40.00 A 0.09 x In 22.5

51N-1Delay TIe> 0.00..150.00 s NA s

Time dial Ie> TMS 0.02~1.5 0.3

Standard Inverse

50-2 pickup I> > 0.1~40.00 A 1.8 x In 450

50-2 Delay T I>> 0.00..150.00 s 0.6 s

50-1Pickup I> 0.01~8.00A 0.9 x In 225

50-1Delay tI> 0.00..150.00 s NA s

Time dial I> TMS 0.02~1.5 0.08 s

Setting Details for 33 kV ,Feeder 1 & 2-Control & Protection Panel

Setting

Incomer from Array Yard 1

CT Ratio on 33kV side 250/1:In=250

33000V Incomer 1 12 MW block • SCOPE OF FUNCTION

(33)

50-2 pickup I> > 0.1~40.00 A 1.8 x In 450

50-2 Delay T I>> 0.00..150.00 s 0.6 s

51-1Pickup I> 0.1~40.00 A 0.9 x In 225

51-1Delay tI> 0.00..150.00 s NA s

Time dial I> TMS 0.02~1.5 0.08 s

Standard Inverse

Setting name Units Range Setting unit

Prim Value

50N-2 Pickup Ie>> >> 0.1~40.00 A 0.9 x In 225

50N-2 Delay Te>>>> 0.00..150.00 s 0.6 s

51N-1Pickup Ie> 0.1~40.00 A 0.09 x In 22.5

51N-1Delay TIe> 0.00..150.00 s NA s

Time dial Ie> TMS 0.02~1.5 0.3

Standard Inverse

50-2 pickup I> > 0.1~40.00 A 1.8 x In 450

50-2 Delay T I>> 0.00..150.00 s 0.6 s

50-1Pickup I> 0.1~40.00 A 0.9 x In 225

50-1Delay tI> 0.00..150.00 s NA s

Time dial I> TMS 0.02~1.5 0.08 s

IEC Curve Standard Inverse(SI) Standard Inverse

Incomer from Array Yard 2

33000V Incomer 2 12MW block • SCOPE OF FUNCTION

Setting

CT Ratio on 33kV side 250/1:In=250

• Directional Phase over current Protection: 67 • Power System Data 1

(34)

50-2 pickup I> > 0.1~40.00 A 1.6 x In 160

50-2 Delay T I>> 0.00..150.00 s 0.6 s

51-1Pickup I> 0.1~40.00 A 0.8 x In 80

51-1Delay tI> 0.00..150.00 s NA s

Time dial I> TMS 0.02~1.5 0.09 s

Standard Inverse

50N-2 Pickup Ie>> >> 0.1~40.00 A 0.8 x In 80

50N-2 Delay Te>>>> 0.00..150.00 s 0.6 s

51N-1Pickup Ie> 0.1~40.00 A 0.08 x In 8

51N-1Delay TIe> 0.00..150.00 s NA s

Time dial Ie> TMS 0.02~1.5 0.3

Standard Inverse

50-2 pickup I> > 0.1~40.00 A 1.6 x In 160

50-2 Delay T I>> 0.00..150.00 s 0.6 s

50-1Pickup I> 0.1~40.00 A 0.8 x In 80

50-1Delay tI> 0.00..150.00 s NA s

Time dial I> TMS 0.02~1.5 0.09 s

Standard Inverse

Setting Details for 33 kV ,Feeder 3 & 4-Control & Protection Panel

Incomer from ICR 7

• Non Directional Phase over current Protection: 51 33000V Incomer 3 4 MW block

CT Ratio on 33kV side 100/1:In=100

• SCOPE OF FUNCTION

Setting

(35)

50-2 pickup I> > 0.1~40.00 A 1.6 x In 80

50-2 Delay T I>> 0.00..150.00 s 0.6 s

51-1Pickup I> 0.1~40.00 A 0.8 x In 40

51-1Delay tI> 0.00..150.00 s NA s

Time dial I> TMS 0.02~1.5 0.09 s

Standard Inverse

50N-2 Pickup Ie>> >> 0.1~40.00 A 0.8 x In 40

50N-2 Delay Te>>>> 0.00..150.00 s 0.6 s

51N-1Pickup Ie> 0.1~40.00 A 0.08 x In 4

51N-1Delay TIe> 0.00..150.00 s NA s

Time dial Ie> TMS 0.02~1.5 0.3

Standard Inverse

50-2 pickup I> > 0.1~40.00 A 1.6 x In 80

50-2 Delay T I>> 0.00..150.00 s 0.6 s

50-1Pickup I> 0.1~40.00 A 0.8 x In 40

50-1Delay tI> 0.00..150.00 s NA s

Time dial I> TMS 0.02~1.5 0.09 s

Incomer from ICR 8

CT Ratio on 33kV side 50/1:In=50

Setting

(36)

50-2 pickup I> > 0.1~40.00 A 1.8 x In 450

50-2 Delay T I>> 0.00..150.00 s 0.6 s

51-1Pickup I> 0.1~40.00 A 0.9 x In 225

51-1Delay tI> 0.00..150.00 s NA s

Time dial I> TMS 0.02~1.5 0.08 s

Standard Inverse

50N-2 Pickup Ie>> >> 0.1~40.00 A 0.9 x In 225

50N-2 Delay Te>>>> 0.00..150.00 s 0.6 s

51N-1Pickup Ie> 0.1~40.00 A 0.09 x In 22.5

51N-1Delay TIe> 0.00..150.00 s NA s

Time dial Ie> TMS 0.02~1.5 0.3

Standard Inverse

50-2 pickup I> > 0.1~40.00 A 1.8 x In 450

50-2 Delay T I>> 0.00..150.00 s 0.6 s

50-1Pickup I> 0.1~40.00 A 0.9 x In 225

50-1Delay tI> 0.00..150.00 s NA s

Time dial I> TMS 0.02~1.5 0.08 s

Setting

Setting Details for 33 kV ,Feeder 5 & 6-Control & Protection Panel

CT Ratio on 33kV side 250/1:In=250

(37)

50-2 pickup I> > 0.1~40.00 A 0.8 x In 24

50-2 Delay T I>> 0.00..150.00 s 0.6 s

51-1Pickup I> 0.1~40.00 A 0.04 x In 1.2

51-1Delay tI> 0.00..150.00 s NA s

Time dial I> TMS 0.02~1.5 0.07 s

Standard Inverse

50N-2 Pickup Ie>> >> 0.1~40.00 A 0.1 x In 3

50N-2 Delay Te>>>> 0.00..150.00 s 0.1 s

51N-1Pickup Ie> 0.1~40.00 A 0.01 x In 0.3

51N-1Delay TIe> 0.00..150.00 s 0.07 s

Time dial Ie> TMS 0.02~1.5 DT

Standard Inverse Setting

Setting

Outgoing to Auxiliary Transformer

CT Ratio on 33kV side 30/1:In=30

33000V outgoing to 63 kVA Transformer • SCOPE OF FUNCTION

(38)

(39)

Relay Located in Switch Board Relay type: Siemens 7SR1003

Function 50/51 Function 50N/51N Other functions are disabled

Title Setting Range

CTs

CT rated primary 10..50000 A 80A

CT rated secondary 1 A / 5 A 1A

50-2 pickup I> > 0.005 to 5 2 x In 160

50-2 Delay T I>> 0.00..14400 s 0.9 s

51-1Pickup I> 0.05,0.06,..4 1 x In 80

51-1Delay tI> 0.00..14400 s NA s

Time dial I> TMS 0.01,0.025..1.6,1.7,..100 0.12 s

IEC Curve IEC NI,VI,EI,LTI,ANSI

MI,VI,EI, & DTL IEC NI

50N-2 Pickup Ie>> >> 0.005 to 5 1 x In 80

50N-2 Delay Te>>>> 0.00..14400s 0.9 s

51N-1Pickup Ie> 0.05,0.06,..4 0.1 x In 8

51N-1Delay TIe> 0.00..14400s NA s

Time dial Ie> TMS 0.01,0.025..1.6,1.7,..100 0.44

33kV,630 A,26.3kA /3 sec, Switch Board 1 (Item No 200)

Incomer from Inverter Transformer ICR 1

Panel 1-IC003 CT Ratio on 33kV side 80/1:In=80

33000V Incomer ICR 4 MW block • SCOPE OF FUNCTION

Setting Setting

• Phase over current Protection: 50/51

(40)

Title Setting Range

CTs

50-2 pickup I> > 0.005 to 5 1.8 x In 450

50-2 Delay T I>> 0.00..14400s 0.75 s

51-1Pickup I> 0.05,0.06,..4 1 x In 250

51-1Delay tI> 0.00..14400s NA s

Time dial I> TMS 0.01,0.025..1.6,1.7,..100 0.08 s

50N-2 Pickup Ie>> >> 0.005 to 5 1 x In 250

50N-2 Delay Te>>>> 0.00..14400s 0.75 s

51N-1Pickup Ie> 0.05,0.06,..4 0.1 x In 25

51N-1Delay TIe> 0.00..14400s NA s

Time dial Ie> TMS 0.01,0.025..1.6,1.7,..100 0.36

Panel 2-OG000

Outgoing to 33 kV Switch Board

• Ground over current Protection: 50N/51 N CT Ratio on 33kV side 250/1:In=250 • SCOPE OF FUNCTION

Setting

• Phase over current Protection: 50/51 • Power System Data 1

(41)

Title Setting Range

CTs

50-2 pickup I> > 0.005 to 5 2 x In 160

50-2 Delay T I>> 0.00..14400 s 0.9 s

51-1Pickup I> 0.05,0.06,..4 1 x In 80

51-1Delay tI> 0.00..14400 s NA s

Time dial I> TMS 0.01,0.025..1.6,1.7,..100 0.12 s

50N-2 Pickup Ie>> >> 0.005 to 5 1 x In 80

50N-2 Delay Te>>>> 0.00..14400s 0.9 s

51N-1Pickup Ie> 0.05,0.06,..4 0.1 x In 8

51N-1Delay TIe> 0.00..14400s NA s

Time dial Ie> TMS 0.01,0.025..1.6,1.7,..100 0.44

Setting

• Ground over current Protection: 50N/51 N

Setting

33kV,630 A,26.3kA /3 sec, Switch Board 2 (Item No 200)

Incomer from Inverter Transformer ICR 4

Panel 1-IC003 CT Ratio on 33kV side 80/1:In=80

(42)

Title Setting Range

CTs

50-2 pickup I> > 0.005 to 5 1.8 x In 450

50-2 Delay T I>> 0.00..14400s 0.75 s

51-1Pickup I> 0.05,0.06,..4 1 x In 250

51-1Delay tI> 0.00..14400s NA s

Time dial I> TMS 0.01,0.025..1.6,1.7,..100 0.08 s

50N-2 Pickup Ie>> >> 0.005 to 5 1 x In 250

50N-2 Delay Te>>>> 0.00..14400s 0.75 s

51N-1Pickup Ie> 0.05,0.06,..4 0.1 x In 25

51N-1Delay TIe> 0.00..14400s NA s

Time dial Ie> TMS 0.01,0.025..1.6,1.7,..100 0.36

• Ground over current Protection: 50N/51 N • Power System Data 1

Setting

Outgoing to 33 kV Switch Board

Panel 2-OG000 CT Ratio on 33kV side 250/1:In=250

(43)

Title Setting Range Setting

CTs

50-2 pickup I> > 0.005 to 5 2 x In 160

50-2 Delay T I>> 0.00..14400 s 0.9 s

51-1Pickup I> 0.05,0.06,..4 1 x In 80

51-1Delay tI> 0.00..14400 s NA s

Time dial I> TMS 0.01,0.025..1.6,1.7,..100 0.12 s

50N-2 Pickup Ie>> >> 0.005 to 5 1 x In 300

50N-2 Delay Te>>>> 0.00..14400s 0.9 s

51N-1Pickup Ie> 0.05,0.06,..4 0.1 x In 30

51N-1Delay TIe> 0.00..14400s NA s

IEC Curve IEC NI,VI,EI,LTI,ANSI IEC NI

Time dial Ie> TMS 0.01,0.025..1.6,1.7,..100 0.44

33kV,800A,26.3 kA /3 sec, ICOG Panel (ItemNo 400) ICR2

Incomer from Inverter Transformer

Panel 1-IC0G0 CT Ratio on 33kV side 80/1:In=80

33000V Incomer ICR2 4 MW block

Setting

• Ground over current Protection: 50N/51 N • Power System Data 1

(44)

CTs

50-2 pickup I> > 0.005 to 5 2 x In 160

50-2 Delay T I>> 0.00..14400 s 0.9 s

51-1Pickup I> 0.05,0.06,..4 1 x In 80

51-1Delay tI> 0.00..14400 s NA s

Time dial I> TMS 0.01,0.025..1.6,1.7,..100 0.12 s

50N-2 Pickup Ie>> >> 0.005 to 5 1 x In 300

50N-2 Delay Te>>>> 0.00..14400s 0.9 s

51N-1Pickup Ie> 0.05,0.06,..4 0.1 x In 30

51N-1Delay TIe> 0.00..14400s NA s

Time dial Ie> TMS 0.01,0.025..1.6,1.7,..100 0.44

• Ground over current Protection: 50N/51 N 33000V Incomer ICR3 4 MW block • SCOPE OF FUNCTION

Setting

33kV,800A,26.3 kA /3 sec, ICOG Panel (ItemNo 400) ICR3

Incomer from Inverter Transformer

(45)

CTs

50-2 pickup I> > 0.005 to 5 2 x In 160

50-2 Delay T I>> 0.00..14400 s 0.9 s

51-1Pickup I> 0.05,0.06,..4 1 x In 80

51-1Delay tI> 0.00..14400 s NA s

Time dial I> TMS 0.01,0.025..1.6,1.7,..100 0.12 s

50N-2 Pickup Ie>> >> 0.005 to 5 1 x In 300

50N-2 Delay Te>>>> 0.00..14400s 0.9 s

51N-1Pickup Ie> 0.05,0.06,..4 0.1 x In 30

51N-1Delay TIe> 0.00..14400s NA s

Time dial Ie> TMS 0.01,0.025..1.6,1.7,..100 0.44

Setting

33kV,800A,26.3 kA /3 sec, ICOG Panel (ItemNo 400) ICR5

Incomer from Inverter Transformer

(46)

CTs

50-2 pickup I> > 0.005 to 5 2 x In 160

50-2 Delay T I>> 0.00..14400 s 0.9 s

51-1Pickup I> 0.05,0.06,..4 1 x In 80

51-1Delay tI> 0.00..14400 s NA s

Time dial I> TMS 0.01,0.025..1.6,1.7,..100 0.12 s

50N-2 Pickup Ie>> >> 0.005 to 5 1 x In 300

50N-2 Delay Te>>>> 0.00..14400s 0.9 s

51N-1Pickup Ie> 0.05,0.06,..4 0.1 x In 30

51N-1Delay TIe> 0.00..14400s NA s

Time dial Ie> TMS 0.01,0.025..1.6,1.7,..100 0.44

Setting