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Tarbela 4th Extension HP Rev.
VOITH Document No.
Commissioning Instruction
版本
2AEP02-0000-02296008
Generator [U16]
1
Project Document No.
Electrical Protection
TAR4-600F-9493-00
Commissioning Instruction Generator Electrical Protection [U16] (WET COMMISSIONING) Employer’s Representative: __________________________
_____________________
Muhammad Idrees, Dy. Director (Electrical)
Sikander Shah, Director (Electrical)
_______________________
_______________________
Muhammad Iqbal, Pr. Engineer (C&I)
Todor Dimitrov, RE Commissioning
Engineer’s Representative:
Voith Representative: _____________________
_____________________
Kennedy Herrera Commissioning Engineer
Varujan COCYAN Lead Commissioning Engineer
Revision 版本
Page No. 页码
Description 改版说明
Executed by 执行
Approved by 批准
Date 日期
1 2 3 4 5
All
As Built
K. Herrera
V. Cocyan
2018-02-04
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Date 2018-02-02
Tarbela 4th Extension HP Rev.
VOITH Document No.
Commissioning Instruction
版本
2AEP02-0000-02296008
Generator [U16]
1
Project Document No.
Electrical Protection
TAR4-600F-9493-00 TABLE OF CONTENTS 1.
PURPOSE OF TESTS..................................................................................................................................4
2.
REFERENCE DOCUMENT ..........................................................................................................................4
3.
SCOPE OF TEST .........................................................................................................................................4
4.
TOOLS – MEASUREMENT AND TEST EQUIPMENT ...............................................................................5
5.
GENERAL RECOMENDATIONS ................................................................................................................5
6.
LIST OF THE ELECTRICAL PROTECTION ACTIVES DURING TESTS ..................................................5
7.
GENERADOR THREE PHASE SHORT CIRCUIT PROTECTION TEST ...................................................8 7.1. UNIFILAR ARRANGEMENT ......................................................................................................................8 7.2. LIST OF THE ELECTRICAL PROTECTION INHIBIT DURING TESTS.....................................................9 7.3. SPECIFIC ARRANGEMENT FOR GENERADOR SHORT CIRCUIT TEST ........................................... 10 7.4. CHECKING OF CURRENT CIRCUITS (10% / 100%IN) ......................................................................... 11 7.5. GENERATOR DIFFERENTIAL (87G) PROTECTION TEST -F311 / MICOM P345 ............................... 13 7.6. CURRENT UNBALANCE (46) MAIN PROTECTION TEST -F311 / MICOM P345 ................................. 14 7.7. CURRENT UNBALANCE (46) BACKUP PROTECTION TEST -F312/ MICOM P342 ............................ 15 7.8. END OF FUNCTIONAL SHORT CIRCUIT TESTING - GENERATOR PROTECTION ........................... 16
8.
GSU TRANSFORMER SHORT CIRCUIT PROTECTION TEST.............................................................. 17 8.1. UNIFILAR ARRANGEMENT BY 3-PHASE SHORT CIRCUIT TEST ...................................................... 17 8.2. SPECIFIC ARRANGEMENT FOR TRANSFORMER 3-PHASE SHORT CIRCUIT TEST ...................... 18 8.3. CHECKING OF CURRENT CIRCUITS (10%IN AND 20%IN) ................................................................... 18 8.4. GSU_TRANSFORMER DIFFERENTIAL (87T) MAIN PROTECTION TEST -F321. .............................. 20 8.5. GSU_TRANSFORMER DIFFERENTIAL (87T) BACKUP PROTECTION TEST -F322. ......................... 21 8.6. UNDER IMPEDANCE (21) PROTECTION TEST –F311 / - F312 ........................................................... 22 8.7. UNIFILAR ARRANGEMENT BY 1-PHASE SHORT CIRCUIT TEST ...................................................... 23 8.8. SPECIFIC ARRANGEMENT FOR TRANSFORMER 1-PHASE SHORT CIRCUIT TEST ...................... 24 8.9. CHECKING OF CURRENT CIRCUITS (20%IN) ..................................................................................... 24 8.10. RESTRICTED EARTH FAULT (64REF) PROTECTION TEST –F321 / - F322..................................... 25 8.11. END OF FUNCTIONAL SHORT CIRCUIT TEST – GSU-TRANSF. PROTECTION ............................. 25
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Date 2018-02-02
Tarbela 4th Extension HP Rev.
VOITH Document No.
Commissioning Instruction
版本
2AEP02-0000-02296008
Generator [U16]
1
Project Document No.
Electrical Protection
TAR4-600F-9493-00 9.
GENERATOR OPEN CIRCUIT PROTECTION TEST .............................................................................. 26 9.1. UNIFILAR ARRANGEMENT FOR GENERATOR OPEN CIRCUIT TEST .............................................. 26 9.2. SPECIFIC ARRANGEMENT FOR OPEN CIRCUIT PROTECTION TEST ............................................. 27 9.3. 100% STATOR EARTH FAULT (64S) PROTECTION -F311 AT GENERATION SIDE .......................... 27 9.4. 95% STATOR EARTH FAULT (64S) PROTECTION -F311.................................................................... 28 9.5. 100% STATOR EARTH FAULT (64S) PROTECTION -F311 AT NEUTRAL SIDE ................................. 29 9.6. CHECKING VOLTAGE CIRCUIT (∼ 20% UN) ......................................................................................... 30 9.7. OVERVOLTAGE (59) PROTECTION TEST -F311 / -F312..................................................................... 32 9.8. CHECKING VOLTAGE CIRCUIT (100% UN).......................................................................................... 33 9.9. OVERFREQUENCY (81O) PROTECTION TEST -F311 / -F312 ............................................................ 34 9.10. UNDERFREQUENCY (81U) PROTECTION TEST -F311 / -F312 ........................................................ 35 9.11. UNDERVOLTAGE (27) PROTECTION TEST -F311 / -F312 ................................................................ 36 9.12. END OF FUNCTIONAL OPEN CIRCUIT TESTTING - GENERATOR PROTECTION ......................... 36
10. ANNEX ...................................................................................................................................................... 37 10.1. PROTECTION TEST REPORT..................................................................................................................... 38 10.2. BACK CHARGING OF MAIN TRANSFORMERS / INRUSH CURRENT ................................................................ 39 10.3. PHASE ROTATION CHECK FROM MAIN TRANSFORMER .............................................................................. 40 10.4. PHASE ROTATION CHECK FROM GENERATOR ........................................................................................... 41 10.5. DUMMY SYNCHRONIZATION ..................................................................................................................... 42 10.6. SYNCHRONIZATION.................................................................................................................................. 43
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Date 2018-02-02
Tarbela 4th Extension HP Rev.
VOITH Document No.
Commissioning Instruction
版本
2AEP02-0000-02296008
Generator [U16]
1
Project Document No.
Electrical Protection
TAR4-600F-9493-00 1.
PURPOSE OF TESTS The purpose of these test, is to verify the correct operation of protective and control system together, also verify current and voltage circuits, having in consideration secondary circuits and the polarity of current and voltage transformers. Also, with this test will verify the stability of the protection differential of generator, the protection differential of transformer. Current document summarize basic considerations for protection primary tests of generator with running machine.
2.
REFERENCE DOCUMENT The used documents for elaborate this procedure are integrate of the followed:
3.
[1]
No. 2PPE05-010101303012
Rev. D
Overall Single Line Diagram Power House and 220/500kV Switchyard
[2]
No. 2PPE05-010101303013
Rev. C
Main Single Line Diagram Unit 15 to 17 and 500kV Switchyard Bay 19 to 21
[3]
No. 2PPE05-010101303014
Rev. L
Single Line Relay & Metering Diagram Unit 15-16 and 500kV Switchyard Bay 19-20; Unit 17 and 500kV Switchyard Bay
[4]
No. 2AEP02-000001740949
Rev. G
Setting Calculation and Parameterization Unit 15/16/17 and Overhead Line and 500kV Switchyard Protection
[5]
No. 2AEP02-010001819165
Rev. -
Unit Protection System Main Protection System
[6]
No. 2AEP02-010001819168
Rev. -
Unit Protection System Back-Up Protection System
[7]
No. 2AEP02-010001819170
Rev. -
Unit 17 Protection System Protection System Accessory
SCOPE OF TEST Scope includes the following tests to be done: Short Circuit Generator Protection Test. Short Circuit Step Up Transformer Protection Test. Open Circuit Generator Protection Test. Rotor Earth Fault Protection Test. Generator On Load Protection Test.
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4/43
Date 2018-02-02
Tarbela 4th Extension HP Rev.
VOITH Document No.
Commissioning Instruction
版本
2AEP02-0000-02296008
Generator [U16]
1
Project Document No.
Electrical Protection
TAR4-600F-9493-00 4.
TOOLS – MEASUREMENT AND TEST EQUIPMENT Voltmeters (range from 0 a 120 Volts). Ammeters (range from 0 a 0.1 A and 0 a 10 A) Screwdrivers Portable radios between 500KV Switchyard, unit control hall and gsu transformer hall.
5.
GENERAL RECOMENDATIONS Before attempting any maneuver related to energizing, switchyard area must be checked for the presence of any provisional ground, equipment or material used during erection works, such like ladders, ropes tools, etc. All responsible person and coordinators, must informed of the exact time when energizing manoeuvres will be initiated. When measuring voltage at terminals connections, special care with the handling of bridges & groundings has to be taken. Do not leave loose connections or open terminals. Special care has to be taken when working at terminals with current, with the use of links or short circuit bridges. For no reason should leave CT’s in open circuit; then, should verify continuosly to avoid loose connections or open terminals.
6.
LIST OF THE ELECTRICAL PROTECTION ACTIVES DURING TESTS Unit Protection Main, MICOM P345, -F311: IMPEDANCE PROTECTION Z1 (ANSI 21). IMPEDANCE PROTECTION Z2 (ANSI 21). OVEREXCITATION (ANSI 24). UNDERVOLTAGE (ANSI 27). REVERSE POWER (ANSI 32). LOSS OF EXCITATION (ANSI 40). UNBALANCE LOAD (ANSI 46). GENERATOR CB FAILURE (ANSI 50BF). OVERVOLTAGE (ANSI 59). FUSE FAILURE OF VT (ANSI 60). ROTOR EARTH FAULT (ANSI 64R). STATOR EARTH FAULT 100% (ANSI 64S). STATOR EARTH FAULT 95% (ANSI 64S). FREQUENCY PROTECTION (ANSI 81O/81U). GENERATOR DIFFERENTIAL (ANSI 87G).
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5/43
Date 2018-02-02
Tarbela 4th Extension HP Rev.
VOITH Document No.
Commissioning Instruction
版本
2AEP02-0000-02296008
Generator [U16]
1
Project Document No.
Electrical Protection
TAR4-600F-9493-00 Unit Protection Backup, MICOM P342, -F312: TURBINE ABNORMAL FREQUENCY (ANSI 12) IMPEDANCE PROTECTION Z1 (ANSI 21). IMPEDANCE PROTECTION Z2 (ANSI 21). UNDERVOLTAGE (ANSI 27). REVERSE POWER (ANSI 32). LOSS OF EXCITATION (ANSI 40). UNBALANCE LOAD (ANSI 46). OVERVOLTAGE (ANSI 59). OVEREXCITATION (ANSI 59F). FUSE FAILURE OF VT (ANSI 60). FREQUENCY PROTECTION (ANSI 81O/81U). Split winding O/C Protection, MICOM P14N, -F315 OVERCURRENT (ANSI 50) GT Protection Main, MICOM P643, -F321:
TRANSFORMER OVERFLUXING (ANSI 24) 500KV LINE BACK-UP OVERCURRENT (ANSI 50) TRANSFORMER OVERCURRENT (ANSI 51) BACKUP EARTH FAULT (ANSI 51N) TRANSFORMER OVERVOLTAGE (ANSI 59) EARTH DIFFERENTIAL REF (ANSI 64) TRANSFORMER DIFFERENTIAL (ANSI 87T) GT Protection Backup, MICOM P642, -F322:
BACKUP EARTH FAULT (ANSI 51N) EARTH DIFFERENTIAL REF (ANSI 64) TRANSFORMER DIFFERENTIAL (ANSI 87T) Excitation Transformer Protection, MICOM P14N, -F351: THERMAL OVERLOAD (ANSI 49) OVERCURRENT (ANSI 50/51)
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Date 2018-02-02
Tarbela 4th Extension HP Rev.
VOITH Document No.
Commissioning Instruction
版本
2AEP02-0000-02296008
Generator [U16]
1
Project Document No.
Electrical Protection
TAR4-600F-9493-00 Line Protection Main, MICOM P545, -F331A / -F331B: LINE DIFFERENTIAL PROTECTION (ANSI 87L) LV OVERCURRENT (ANSI 50/51)
Line Protection Backup, 7SD80, -F332A / -F332B: LINE DIFFERENTIAL PROTECTION (ANSI 87L)
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Date 2018-02-02
Tarbela 4th Extension HP Rev.
VOITH Document No.
Commissioning Instruction
版本
2AEP02-0000-02296008
Generator [U16]
1
Project Document No.
Electrical Protection
TAR4-600F-9493-00 7.
GENERADOR THREE PHASE SHORT CIRCUIT PROTECTION TEST 7.1. UNIFILAR ARRANGEMENT =B19
To UNIT 15
Generator 3P-Short Circuit Test Three phase short circuit location
M
M
UNIT 16
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Date 2018-02-02
Tarbela 4th Extension HP Rev.
VOITH Document No.
Commissioning Instruction
版本
2AEP02-0000-02296008
Generator [U16]
1
Project Document No.
Electrical Protection
TAR4-600F-9493-00 7.2. LIST OF THE ELECTRICAL PROTECTION INHIBIT DURING TESTS Unit Protection Main, MICOM P345, -F311: UNDERVOLTAGE (ANSI 27):
42.09
V<2 Status
“Disabled”
IMPEDANCE PROTECTION (ANSI 21):
09.0F System Backup
“Disabled”
FUSE FAILURE OF VT (ANSI 60):
09.21 Supervision
“Disabled”
Unit Protection Backup, MICOM P342, -F312: UNDERVOLTAGE (ANSI 27):
42.09
V<2 Status
“Disabled”
IMPEDANCE PROTECTION (ANSI 21):
09.0F System Backup
“Disabled”
FUSE FAILURE OF VT (ANSI 60):
09.21 Supervision
“Disabled”
GT Protection Main, MICOM P643, -F321:
TRANSFORMER DIFFERENTIAL (ANSI 87T): 31.01
Trans Diff
“Disabled”
LV OVERCURRENT (ANSI 50/51):
35.12
I>2 Status
“Disabled”
TRANSFORMER DIFFERENTIAL (ANSI 87T): 31.01
Trans Diff
“Disabled”
GT Protection Backup, MICOM P642, -F322:
Line Protection Main, MICOM P545, -F331A / -F331B:
LINE DIFFERENTIAL (ANSI 87L):
33.01 Phase Diff
“Disabled”
Line Protection Backup, 7SD82, -F332A / -F332B:
“OFF”
LINE DIFFERENTIAL (ANSI 87L): 1201 Ph current comparison Incoming from Unit Auxiliary Transformer U16 (+00BBB16) / -F001:
UNDER VOLTAGE CONTROL (27): 42.04
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Date 2018-02-02
Tarbela 4th Extension HP Rev.
VOITH Document No.
Commissioning Instruction
版本
2AEP02-0000-02296008
Generator [U16]
1
Project Document No.
Electrical Protection
TAR4-600F-9493-00 7.3. SPECIFIC ARRANGEMENT FOR GENERADOR SHORT CIRCUIT TEST Three phases short circuit is installed at the 18kV IPB duct, see drawing above. Check that the short circuit can withstand the unit nominal current 16743 A. Braids between Generator and IPBD are connected. Excitation system connected to temporarily auxiliary feed. Step-up Transformer disconnected. GS620, GS610, AND =B19Q10 are in open position. GS210 in closed position. GS100 in closed position with trip 1 and trip 2 inhibited.
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Date 2018-02-02
Tarbela 4th Extension HP Rev.
VOITH Document No.
Commissioning Instruction
版本
2AEP02-0000-02296008
Generator [U16]
1
Project Document No.
Electrical Protection
TAR4-600F-9493-00 7.4. CHECKING OF CURRENT CIRCUITS (10% / 100%In) Unit to nominal speed. Close the excitation breaker. Increase slowly the current to 10 % of the nominal (1674 A) Check stability of the generator and transformer differential protection -F311: IDIF_A: _ A__ IBIAS_A: _
(-F311) A__
-F311: IDIF_B: _
A__
IBIAS_B:
_
A__
-F311: IDIF_C: _
A__
IBIAS_C:
_
A__
Check stability of the generator split winding protection (-F315) -F315: I_A: _ A__ -F315: I_B:
_
A__
-F315: I_C:
_
A__
Check all current circuits and record the values current. Increase slowly the current to 100 % of the nominal current (16740 A) -F311: IDIF_A: _
A__
IBIAS_A:
_
A__
-F311: IDIF_B: _
A__
IBIAS_B:
_
A__
-F311: IDIF_C: _
A__
IBIAS_C:
_
A__
Check stability of the generator split winding protection -F315: I_A:
_
A__
-F315: I_B:
_
A__
-F315: I_C:
_
A__
Check all current circuits and record the values current.
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Date 2018-02-02
Tarbela 4th Extension HP Rev.
VOITH Document No.
Commissioning Instruction
版本
2AEP02-0000-02296008
Generator [U16]
1
Project Document No.
Electrical Protection
TAR4-600F-9493-00
CT – GENERATOR NEUTRAL SIDE (I≅10%In / 100%)
PHASE
16BAA10.CE111
16BAA10.CE112
16BAA10.CE113
16BAA10.CE114
+17
+16CFA01
+16CHA11
+16CHA12
Excitation Panel
Metering Panel
Protection Panel
Protection Panel
-A1 (Excitation)
-P3 (Metering)
-F311 / P345 (protection)
Result
(Pass/Fail)
-F312 / P642 (protection)
A
A/
kA
A/
kA
A/
kA
A/
kA
PASS
B
A/
kA
A/
kA
A/
kA
A/
kA
PASS
C
A/
kA
A/
kA
A/
kA
A/
kA
PASS
CT – GCB TRANSFORMER SIDE (I≅10%In / 100%)
PHASE
16BAA20.CE111
16BAA20.CE112
16BAA20.CE112
Result
+16CHA11
+16CHA11
+16CHA12
Protection Panel
Protection Panel
Protection Panel
(Pass/Fail)
-F311 / P345 (protection)
-F331A / P545 (protection)
-F322 / P642 (protection)
A
A/
kA
A/
kA
A/
kA
PASS
B
A/
kA
A/
kA
A/
kA
PASS
C
A/
kA
A/
kA
A/
kA
PASS
CT – GCB GENERATOR SIDE (I≅10%In / 100%)
PHASE
16BAA20.CE121
16BAA20.CE122
Result
+16CHA11
GCB: +16BAA21
(Pass/Fail)
Protection Panel -F321 / P643 (protection)
-T.X91: 51, 53, 55 (spare) (secondary side)
A
A/
kA
A/
kA
PASS
B
A/
kA
A/
kA
PASS
C
A/
kA
A/
kA
PASS
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Date 2018-02-02
Tarbela 4th Extension HP Rev.
VOITH Document No.
Commissioning Instruction
版本
2AEP02-0000-02296008
Generator [U16]
1
Project Document No.
Electrical Protection
TAR4-600F-9493-00 7.5. GENERATOR DIFFERENTIAL (87G) PROTECTION TEST -F311 / MICOM P345 Decrease slowly the current up to 0A Short-circuit secondary terminal: -X311I:11-14 Unit to nominal speed. The excitation breaker is closed. The Generator Circuit Breaker is closed, =16BAA20.GS100. In extracted position, Close the UAT Circuit Breaker. Close the HV Circuit Breaker, =B19-Q1 and =B19-Q3 Increase slowly the generator current until the trip @ 850 A. Check the Lockout Relay -K101_Trip HVCBs: No Trip. Check the Lockout Relay -K102_Trip GCB: Trip. Check the Lockout Relay -K103_Trip LVCB: No Trip. Check the Lockout Relay -K104_Trip Excitation CB: Trip. Check the Lockout Relay -K105_Trip Turbine: Trip. Check the Lockout Relay -K106_Trip Gen firefighting system: Trip. Check the Lockout Relay -K3109_Trip Breaker Failure: Trip. Attach trip record of the relay. Reset the alarms and trip.
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Date 2018-02-02
Tarbela 4th Extension HP Rev.
VOITH Document No.
Commissioning Instruction
版本
2AEP02-0000-02296008
Generator [U16]
1
Project Document No.
Electrical Protection
TAR4-600F-9493-00 7.6. CURRENT UNBALANCE (46) MAIN PROTECTION TEST -F311 / MICOM P345 Excitation breaker in OFF position. Short-circuit secondary terminal: -X311I:11-14 & -X311I 21-24 Unit to nominal speed. Close the excitation breaker. Close the Generator Circuit Breaker, =16BAA20.GS100. In extracted position, Close the UAT Circuit Breaker. Close the HV Circuit Breaker, =B19-Q1 and =B19-Q3 Increase slowly the generator current until the 46 – alarm stage I2 @ 1200 A, t=20s. Check the alarm Negative Phase Sequence O/C Alarm on Automation Panel. Increase slowly the generator current until the 46 – trip stage I2 @ 6000 A, t=100s. Check the Lockout Relay -K101_Trip HVCBs: No Trip. Check the Lockout Relay -K102_Trip GCB: Trip. Check the Lockout Relay -K103_Trip LVCB: No Trip. Check the Lockout Relay -K104_Trip Excitation CB: No Trip. Check the Lockout Relay -K105_Trip Turbine: No Trip. Check the Lockout Relay -K106_Trip Gen firefighting system: No Trip. Check the alarm NPS Thermal Trip on Automation Panel. Check the local signal NPS Thermal Trip on Protection Panel. Attach trip record of the relay. Reset the alarms and trip.
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Date 2018-02-02
Tarbela 4th Extension HP Rev.
VOITH Document No.
Commissioning Instruction
版本
2AEP02-0000-02296008
Generator [U16]
1
Project Document No.
Electrical Protection
TAR4-600F-9493-00 7.7. CURRENT UNBALANCE (46) BACKUP PROTECTION TEST -F312/ MICOM P342 Excitation breaker in OFF position. Short-circuit secondary terminal: -X312I:1-4 In extracted position, Close the UAT Circuit Breaker. Close the HV Circuit Breaker, =B19-Q1 and =B19-Q3 Unit to nominal speed. Close the excitation breaker. Close the Generator Circuit Breaker, =16BAA20.GS100. Increase slowly the generator current until the 46 – alarm stage I2 @ 1200 A, t=20s. Check the alarm Negative Phase Sequence O/C Alarm on Automation Panel. Increase slowly the generator current until the 46 – trip stage I2 @ 6000 A, t=100s. Check the Lockout Relay -K201_Trip HVCBs: No Trip. Check the Lockout Relay -K202_Trip GCB: Trip. Check the Lockout Relay -K203_Trip LVCB: No Trip. Check the Lockout Relay -K204_Trip Excitation CB: No Trip. Check the Lockout Relay -K205_Trip Turbine: No Trip. Check the Lockout Relay -K206_Trip Trf firefighting system: No Trip. Check the alarm NPS Thermal Trip on Automation Panel. Check the local signal NPS Thermal Trip on Protection Panel. Attach trip record of the relay. Reset the alarms and trip.
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Date 2018-02-02
Tarbela 4th Extension HP Rev.
VOITH Document No.
Commissioning Instruction
版本
2AEP02-0000-02296008
Generator [U16]
1
Project Document No.
Electrical Protection
TAR4-600F-9493-00
7.8. END OF FUNCTIONAL SHORT CIRCUIT TESTING - GENERATOR PROTECTION
End of testing current dependent relays of generator. Protection is ready for Short circuit generator characteristic test. After the Short circuit generator characteristic test, put back the protection settings
Unit Protection Backup, MICOM P643, -F321: “Enabled”
TRANSFORMER DIFFERENTIAL (ANSI 87T): 31.01 Trans Diff
Unit Protection Backup, MICOM P342, -F322: “Enabled”
TRANSFORMER DIFFERENTIAL (ANSI 87T): 31.01 Trans Diff Remove three phases short circuit is installed at the 18kV IPB duct.
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Date 2018-02-02
Tarbela 4th Extension HP Rev.
VOITH Document No.
Commissioning Instruction
版本
2AEP02-0000-02296008
Generator [U16]
1
Project Document No.
Electrical Protection
TAR4-600F-9493-00 8.
GSU TRANSFORMER SHORT CIRCUIT PROTECTION TEST 8.1. UNIFILAR ARRANGEMENT BY 3-PHASE SHORT CIRCUIT TEST =B19
To UNIT 15
GSU 3PH-Short Circuit Test Three phase short circuit location
M
M
UNIT 16
Execution OU
VHH
Executed by
Checked by
Approved by
Name
Sign
Name
Sign
Name
Sign
K. Herrera
KeHe
Th. König
ThKn
St. Herold
StHe
17/43
Date 2018-02-02
Tarbela 4th Extension HP Rev.
VOITH Document No.
Commissioning Instruction
版本
2AEP02-0000-02296008
Generator [U16]
1
Project Document No.
Electrical Protection
TAR4-600F-9493-00 8.2. SPECIFIC ARRANGEMENT FOR TRANSFORMER 3-PHASE SHORT CIRCUIT TEST Install the three phases short circuit with the temporary earthing kits at the 500kV Switchyard. See drawing above. Check that the short circuit can withstand the generator nominal current 603A, 500 kV side. GSU Transformer disconnected from the 500kV Switchyard. (=B19+Q10 are open position). Excitation system connected to temporarily auxiliary feed. Disconnecting E/S GS620, GS610 are in open position. Generator Disconnecting GS210 are in closed position. GCB GS100 in remote and available for operation.
8.3. CHECKING OF CURRENT CIRCUITS (10%In and 20%In) Unit to nominal speed. Close the excitation breaker with zero voltage. Close the generator circuit breaker GS100. Increase slowly the current up to 10 % of the nominal (LV: 1674A, HV: 60.3A). Check stability of the transformer differential protection
(-F321/-F322)
-F321/-F322:
IDIF_A: 0.00475 A / 0.0022 A
IBIAS_A: 0.092 A / 0.0928 A
-F321/-F322:
IDIF_B: 0.00460 A / 0.0014 A
IBIAS_B: 0.093 A / 0.0913 A
-F321/-F322:
IDIF_C: 0.00019 A / 0.0015 A
IBIAS_C: 0.095 A / 0.0920 A
Check all current circuits and record the values current. Increase slowly the current up to 20 % of the nominal current (LV: 8372A, HV: 302A). Check stability of the transformer differential protection
(-F321/-F322)
-F321/-F322:
IDIF_A: 0.0043A / 0.0042 A
IBIAS_A: 0.189 A / 0.188 A
-F321/-F322:
IDIF_B: 0.0032 A / 0.0036 A
IBIAS_B: 0.191 A / 0.188 A
-F321/-F322:
IDIF_C: 0.0034 A / 0.0015 A
IBIAS_C: 0.190 A / 0.188 A
Check all current circuits and record the values current.
Execution OU
VHH
Executed by
Checked by
Approved by
Name
Sign
Name
Sign
Name
Sign
K. Herrera
KeHe
Th. König
ThKn
St. Herold
StHe
18/43
Date 2018-02-02
Tarbela 4th Extension HP Rev.
VOITH Document No.
Commissioning Instruction
版本
2AEP02-0000-02296008
Generator [U16]
1
Project Document No.
Electrical Protection
TAR4-600F-9493-00
CT – GCB TRANSFORMER SIDE (I≅10%In / 20%)
PHASE
16BAA20.CE111
16BAA20.CE112
16BAA20.CE112
Result
+16CHA11
+16CHA11
+16CHA12
Protection Panel
Protection Panel
Protection Panel
(Pass/Fail)
-F311 / P345 (protection)
-F331A / P545 (protection)
-F322 / P642 (protection)
A
A/
A
A/
A
A/
A
PASS
B
A/
A
A/
A
A/
A
PASS
C
A/
A
A/
A
A/
A
PASS
CT – TRANSFORMER HV SIDE (I≅10%In / 20%)
PHASE
17BAT10.CE121
17BAT10.CE122
Result
+16CHA11
+16CHA12
Protection Panel
Protection Panel
(Pass/Fail)
-F321 / P643 (protection)
-F332A / 7SD80 (protection)
-F322 / P642 (protection)
A
A/
A
A/
A
A/
A
PASS
B
A/
A
A/
A
A/
A
PASS
C
A/
A
A/
A
A/
A
PASS
Execution OU
VHH
Executed by
Checked by
Approved by
Name
Sign
Name
Sign
Name
Sign
K. Herrera
KeHe
Th. König
ThKn
St. Herold
StHe
19/43
Date 2018-02-02
Tarbela 4th Extension HP Rev.
VOITH Document No.
Commissioning Instruction
版本
2AEP02-0000-02296008
Generator [U16]
1
Project Document No.
Electrical Protection
TAR4-600F-9493-00 8.4. GSU_TRANSFORMER DIFFERENTIAL (87T) MAIN PROTECTION TEST -F321. Decrease slowly the current up to 0A Short-circuit secondary terminal: -X321I:11-14 In extracted position, Close the UAT Circuit Breaker. Close the HV Circuit Breaker, =B19-Q1 and =B19-Q3 Unit to nominal speed. The excitation breaker is closed. The Generator Circuit Breaker is closed, =16BAA20.GS100. Increase slowly the generator current until the trip @ 5000 A. Check the Lockout Relay -K101_Trip HVCBs: Trip. Check the Lockout Relay -K102_Trip GCB: Trip. Check the Lockout Relay -K103_Trip LVCB: Trip. Check the Lockout Relay -K104_Trip Excitation CB: No Trip. Check the Lockout Relay -K105_Trip Turbine: No Trip. Check the Lockout Relay -K206_Trip Trf firefighting system: Trip. Check the Lockout Relay -K3109_Trip Circuit Breaker Failure: Trip. Attach trip record of the relay. Reset the alarms and trip.
Execution OU
VHH
Executed by
Checked by
Approved by
Name
Sign
Name
Sign
Name
Sign
K. Herrera
KeHe
Th. König
ThKn
St. Herold
StHe
20/43
Date 2018-02-02
Tarbela 4th Extension HP Rev.
VOITH Document No.
Commissioning Instruction
版本
2AEP02-0000-02296008
Generator [U16]
1
Project Document No.
Electrical Protection
TAR4-600F-9493-00 8.5. GSU_TRANSFORMER DIFFERENTIAL (87T) BACKUP PROTECTION TEST -F322. Short-circuit secondary terminal: -X321I:1-4 In extracted position, Close the UAT Circuit Breaker. Close the HV Circuit Breaker, =B19-Q1 and =B19-Q3 Unit to nominal speed. The excitation breaker is closed. The Generator Circuit Breaker is closed, =16BAA20.GS100. Increase slowly the generator current until the trip @ 5000 A. Check the Lockout Relay -K201_Trip HVCBs: Trip. Check the Lockout Relay -K202_Trip GCB: Trip. Check the Lockout Relay -K203_Trip LVCB: Trip. Check the Lockout Relay -K204_Trip Excitation CB: No Trip. Check the Lockout Relay -K205_Trip Turbine: No Trip. Check the Lockout Relay -K206_Trip Trf firefighting system: Trip. Check the Lockout Relay -K3109_Trip Circuit Breaker Failure: Trip. Attach trip record of the relay. Reset the alarms and trip.
Execution OU
VHH
Executed by
Checked by
Approved by
Name
Sign
Name
Sign
Name
Sign
K. Herrera
KeHe
Th. König
ThKn
St. Herold
StHe
21/43
Date 2018-02-02
Tarbela 4th Extension HP Rev.
VOITH Document No.
Commissioning Instruction
版本
2AEP02-0000-02296008
Generator [U16]
1
Project Document No.
Electrical Protection
TAR4-600F-9493-00 8.6. UNDER IMPEDANCE (21) PROTECTION TEST –F311 / - F312 In the -F311 Protection, put back temporary the setting:
09.0F System Backup from ““Disabled” to ““Enabled” In the -F312 Protection, put back temporary the setting:
09.0F System Backup from ““Disabled” to ““Enabled” In extracted position, Close the UAT Circuit Breaker. Close the HV Circuit Breaker, =B19-Q1 and =B19-Q3 Unit to nominal speed. The excitation breaker is closed. Close the Generator Circuit Breaker, =16BAA20.GS100. Increase slowly the generator current until the trip @ 5000 A. Check the Lockout Relay -K201_Trip HVCBs: Trip. Check the Lockout Relay -K202_Trip GCB: Trip. Check the Lockout Relay -K203_Trip LVCB: Trip. Check the Lockout Relay -K204_Trip Excitation CB: Trip. Check the Lockout Relay -K205_Trip Turbine: Trip. Check the Lockout Relay -K206_Trip Trf firefighting system: No Trip. Attach trip record of the relay. Reset the alarms and trip.
Execution OU
VHH
Executed by
Checked by
Approved by
Name
Sign
Name
Sign
Name
Sign
K. Herrera
KeHe
Th. König
ThKn
St. Herold
StHe
22/43
Date 2018-02-02
Tarbela 4th Extension HP Rev.
VOITH Document No.
Commissioning Instruction
版本
2AEP02-0000-02296008
Generator [U16]
1
Project Document No.
Electrical Protection
TAR4-600F-9493-00 8.7. UNIFILAR ARRANGEMENT BY 1-PHASE SHORT CIRCUIT TEST =B19
To UNIT 15
GSU 1PH-Short Circuit Test 1 phase to ground short circuit location
M
M
UNIT 16
Execution OU
VHH
Executed by
Checked by
Approved by
Name
Sign
Name
Sign
Name
Sign
K. Herrera
KeHe
Th. König
ThKn
St. Herold
StHe
23/43
Date 2018-02-02
Tarbela 4th Extension HP Rev.
VOITH Document No.
Commissioning Instruction
版本
2AEP02-0000-02296008
Generator [U16]
1
Project Document No.
Electrical Protection
TAR4-600F-9493-00 8.8. SPECIFIC ARRANGEMENT FOR TRANSFORMER 1-PHASE SHORT CIRCUIT TEST Install the single phase short circuit with the temporary earthing kits at the 500kV Switchyard. See drawing above. Check that the short circuit can withstand the generator nominal current 603A, 500 kV side. GSU Transformer disconnected from the 500kV Switchyard. (=B19+Q10 are open position). Excitation system connected to temporarily auxiliary feed. Disconnecting E/S GS620, GS610 are in open position. Generator Disconnecting GS210 are in closed position. GCB GS100 in closed position.
8.9. CHECKING OF CURRENT CIRCUITS (20%In) Unit to nominal speed. Close the excitation breaker with zero voltage. The generator circuit breaker GS100 in closed position. Increase slowly the current up to 10 % of the nominal (LV: 1674A, HV: 60.3A). Check stability of the transformer Differential and REF protection (-F321/-F322) -F321/-F322:
IDIF_REF:
A /_
A
IBIAS_REF:
A /_
A
-F321/-F322:
IDIF_A:
A /_
A
IBIAS_A:
A /_
A
-F321/-F322:
IDIF_B:
A /_
A
IBIAS_B:
A /_
A
-F321/-F322:
IDIF_C:
A /_
A
IBIAS_C:
A /_
A
Increase slowly the current up to 20 % of the nominal (LV: 3348A, HV: 120.6A). Check stability of the transformer Differential and REF protection (-F321/-F322) -F321/-F322:
IDIF_REF:
A /_
A
IBIAS_REF:
A /_
A
-F321/-F322:
IDIF_A:
A /_
A
IBIAS_A:
A /_
A
-F321/-F322:
IDIF_B:
A /_
A
IBIAS_B:
A /_
A
-F321/-F322:
IDIF_C:
A /_
A
IBIAS_C:
A /_
A
CT – TRANSFORMER HV SIDE (I≅10%In / 20%)
PHASE
17BAT10.CE111
17BAT10.CE112
17BAT10.CE113
Result
+16CHA11
+16CHA12
Protection Panel -F321 / P643 (protection)
Protection Panel -F322 / P642 (protection)
SPARE
(Pass/Fail)
A/
N
Execution OU
VHH
A
A/
Executed by
Checked before WET
A
N/A
Checked by
Approved by
Name
Sign
Name
Sign
Name
Sign
K. Herrera
KeHe
Th. König
ThKn
St. Herold
StHe
24/43
Date 2018-02-02
Tarbela 4th Extension HP Rev.
VOITH Document No.
Commissioning Instruction
版本
2AEP02-0000-02296008
Generator [U16]
1
Project Document No.
Electrical Protection
TAR4-600F-9493-00 8.10. RESTRICTED EARTH FAULT (64REF) PROTECTION TEST –F321 / - F322 In the -F321 Protection, Change Temporary the setting: 0A.59
TN1 Polarity
from “Standard” to “Inverted”
In the -F322 Protection, Change Temporary the setting: 0A.59
TN1 Polarity
from “Standard” to “Inverted”
Unit to nominal speed. The excitation breaker is closed. Close the Generator Circuit Breaker, =16BAA20.GS100. In extracted position, Close the UAT Circuit Breaker. Increase slowly the generator current until the trip @ 5000 A. Check the Lockout Relay -K101/-K201_Trip HVCB: Trip. Check the Lockout Relay -K102/-K202_Trip GCB: Trip. Check the Lockout Relay -K103/-K203_Trip LVCB: Trip. Check the Lockout Relay -K104/-K204_Trip Excitation CB: No Trip. Check the Lockout Relay -K105/-K205_Trip Turbine: No Trip. Check the Lockout Relay -K206_Trip Trf firefighting system: Trip. Attach trip record of the relay. Reset the alarms and trip. In the -F321 Protection, put back the normal setting of the protections: 0A.59
TN1 Polarity
from “Inverted” to “Standard”
In the -F322 Protection, put back the normal setting of the protections: 0A.59
TN1 Polarity
from “Inverted” to “Standard”
8.11. END OF FUNCTIONAL SHORT CIRCUIT TEST – GSU-TRANSF. PROTECTION End of testing current dependent relays of transformer. Remove three phases short circuit is installed at the 500kV Switchyard.
Execution OU
VHH
Executed by
Checked by
Approved by
Name
Sign
Name
Sign
Name
Sign
K. Herrera
KeHe
Th. König
ThKn
St. Herold
StHe
25/43
Date 2018-02-02
Tarbela 4th Extension HP Rev.
VOITH Document No.
Commissioning Instruction
版本
2AEP02-0000-02296008
Generator [U16]
1
Project Document No.
Electrical Protection
TAR4-600F-9493-00 9.
GENERATOR OPEN CIRCUIT PROTECTION TEST 9.1. UNIFILAR ARRANGEMENT FOR GENERATOR OPEN CIRCUIT TEST =B19
To UNIT 15
M
M
Bridge Disconneted. Exc. Trf. connected to temporary source.
95% Stator E/F Test Temporary Connection Phase to Ground
100% Stator E/F Test Temporary Connection Neutral to Ground UNIT 16
Execution OU
VHH
Executed by
Checked by
Approved by
Name
Sign
Name
Sign
Name
Sign
K. Herrera
KeHe
Th. König
ThKn
St. Herold
StHe
26/43
Date 2018-02-02
Tarbela 4th Extension HP Rev.
VOITH Document No.
Commissioning Instruction
版本
2AEP02-0000-02296008
Generator [U16]
1
Project Document No.
Electrical Protection
TAR4-600F-9493-00 9.2. SPECIFIC ARRANGEMENT FOR OPEN CIRCUIT PROTECTION TEST GSU Transformer disconnected from the 500kV Switchyard. (=B19+Q10 are open position). Excitation system connected to temporarily auxiliary feed. Disconnecting E/S GS620, GS610 are in open position. Generator Disconnecting GS210 in open position. (Dummy closed position) GCB GS100 in remote and available for operation. Excitation breaker in OFF position. Generator Stopped. Install one 10mm2 wire between phase “RED” and ground in Generator side. Phase “RED” connected to ground was installed at the 18kV side, as drawing above.
9.3. 100% STATOR EARTH FAULT (64S) PROTECTION -F311 AT GENERATION SIDE In the -F311 Protection, Change Temporary the setting: 3B.50
VN>5 Status: from
“Enabled”
to
“Disabled”
3C.10
64S LF Injection: from
“Enabled”
to
“Disabled”
In the Panel +16CHA11 Block 100% SEF by pressing Pushbutton -S314. Close the UAT Circuit Breaker. Close the HV Circuit Breaker, =B19-Q1 and =B19-Q3 Unit to nominal speed. Close the excitation breaker with zero voltage. Unit to nominal speed. Close the Generator Circuit Breaker, =16BAA20.GS100. In the -F311 Protection, Change Temporary the setting: 3C.10
64S LF Injection: from
“Disabled”
to
“Enabled”
In the Panel +16CHA11 Activate 100% SEF by pressing Pushbutton -S314. 100% SEF trip (R2<2000 Ohm, t=1.0s
trip).
Check the Lockout Relay -K101_Trip HVCB: Trip. Check the Lockout Relay -K102_Trip GCB: Trip. Check the Lockout Relay -K103_Trip LVCB: Trip. Check the Lockout Relay -K104_Trip Excitation CB: Trip. Check the Lockout Relay -K105_Trip Turbine: Trip. Check the Lockout Relay -K106_Trip Gen firefighting system: No Trip. Check the alarm 100% Stator Earth Fault Protection Trip on Automation Panel. Attach trip record of the relay. Reset the alarms and trip.
Execution OU
VHH
Executed by
Checked by
Approved by
Name
Sign
Name
Sign
Name
Sign
K. Herrera
KeHe
Th. König
ThKn
St. Herold
StHe
27/43
Date 2018-02-02
Tarbela 4th Extension HP Rev.
VOITH Document No.
Commissioning Instruction
版本
2AEP02-0000-02296008
Generator [U16]
1
Project Document No.
Electrical Protection
TAR4-600F-9493-00 9.4. 95% STATOR EARTH FAULT (64S) PROTECTION -F311 In the Panel +16CHA11 Deactivate 100% SEF by pressing Pushbutton -S314. In the -F311 Protection, Change Temporary the setting: 3C.10
64S LF Injection: from
“Enabled”
to
“Disabled”
3B.50
VN>5 Status: from
“Disabled”
to
“Enabled”
Close the UAT Circuit Breaker. Close the HV Circuit Breaker, =B19-Q1 and =B19-Q3 Unit to nominal speed. Close the excitation breaker with zero voltage. Close the Generator Circuit Breaker, =16BAA20.GS100. Increase slowly the generator voltage until 5%Vn (trip V0 ≅ 850V, t=1.0s
trip).
Check the Lockout Relay -K101_Trip HVCB: Trip. Check the Lockout Relay -K102_Trip GCB: Trip. Check the Lockout Relay -K103_Trip LVCB: Trip. Check the Lockout Relay -K104_Trip Excitation CB: Trip. Check the Lockout Relay -K105_Trip Turbine: Trip. Check the Lockout Relay -K106_Trip Gen firefighting system: No Trip. Check the alarm 95% Stator Earth Fault Protection Trip on Automation Panel. Attach trip record of the relay. Reset the alarms and trip. Remove 10mm2 wire between phase “RED” and ground in the Generator side.
Execution OU
VHH
Executed by
Checked by
Approved by
Name
Sign
Name
Sign
Name
Sign
K. Herrera
KeHe
Th. König
ThKn
St. Herold
StHe
28/43
Date 2018-02-02
Tarbela 4th Extension HP Rev.
VOITH Document No.
Commissioning Instruction
版本
2AEP02-0000-02296008
Generator [U16]
1
Project Document No.
Electrical Protection
TAR4-600F-9493-00 9.5. 100% STATOR EARTH FAULT (64S) PROTECTION -F311 AT NEUTRAL SIDE Generator Stopped. Install one 10mm2 wire between generator neutral point and ground. Close the UAT Circuit Breaker. Close the HV Circuit Breaker, =B19-Q1 and =B19-Q3 Unit to nominal speed. Close the excitation breaker with zero voltage. Unit to nominal speed. Close the Generator Circuit Breaker, =16BAA20.GS100. In the -F311 Protection, Change Temporary the setting: 3C.10
64S LF Injection: from
“Disabled”
to
“Enabled”
In the Panel +16CHA11 Activate 100% SEF by pressing Pushbutton -S314. 100% SEF trip (R2<2000 Ohm, t=1.0s
trip).
Check the Lockout Relay -K101_Trip HVCB: Trip. Check the Lockout Relay -K102_Trip GCB: Trip. Check the Lockout Relay -K103_Trip LVCB: Trip. Check the Lockout Relay -K104_Trip Excitation CB: Trip. Check the Lockout Relay -K105_Trip Turbine: Trip. Check the Lockout Relay -K106_Trip Gen firefighting system: No Trip. Check the alarm 100% Stator Earth Fault Protection Trip on Automation Panel. Attach trip record of the relay. Reset the alarms and trip. Remove 10mm2 wire between neutral and ground in the generator earthing compartment.
Execution OU
VHH
Executed by
Checked by
Approved by
Name
Sign
Name
Sign
Name
Sign
K. Herrera
KeHe
Th. König
ThKn
St. Herold
StHe
29/43
Date 2018-02-02
Tarbela 4th Extension HP Rev.
VOITH Document No.
Commissioning Instruction
版本
2AEP02-0000-02296008
Generator [U16]
1
Project Document No.
Electrical Protection
TAR4-600F-9493-00 9.6. CHECKING VOLTAGE CIRCUIT (∼ 20% Un)
GSU Transformer disconnected from the 500kV Switchyard. ( =B19+Q10 are open position). Excitation system connected to temporarily auxiliary feed. Disconnecting E/S GS620, GS610 are in open position. Disconnecting E/S GS610 in Closed position. Generator Disconnecting GS210 in open position. GCB GS100 in remote and available for operation. Excitation breaker in OFF position. Generator Stopped. Unit to nominal speed. Close the excitation breaker. Increase slowly the generator voltage at 20% of Un ≅ 3900 V. Check all voltage circuits record the values.
VERIFICATIONS TESTS – CE231/232/233 (TP4) MEASURED VALUES Core 1a-1n PHASE
Core 2a-2n
+16CHA11 -F311 / P345 Gen. Protection Main
+16CHA12 -F312 / P342 Gen. Protection Main
Core da-dn
+17MKC10 (Excitation)
Result
+16BAA20 -Spare
(Pass/Fail)
Red
V
V
TX0: 10-34
V TX80: 01-02
V
PASS
Yellow
V
V
TX0: 11-34
V TX80: 03-04
V
PASS
Blue
V
V
TX0: 12-34
V TX80: 05-06
V
PASS
VN
V
V
TX83: 01-02
V
PASS
Ph Seq
ACB
Execution OU
VHH
N/A
ACB
Executed by
ABC
Checked by
ACB
Approved by
Name
Sign
Name
Sign
Name
Sign
K. Herrera
KeHe
Th. König
ThKn
St. Herold
StHe
30/43
PASS
Date 2018-02-02
Tarbela 4th Extension HP Rev.
VOITH Document No.
Commissioning Instruction
版本
2AEP02-0000-02296008
Generator [U16]
1
Project Document No.
Electrical Protection
TAR4-600F-9493-00 VERIFICATIONS TESTS – CE241/242/243 (TP5) MEASURED VALUES Core 1a-1n +16CRA11 Synchronization Panel -K7 (Synchronizer) -K8 (Synchrocheck)
PHASE Terminal
Red
-X50:2L1
V
Yellow
-X50:2L2
V
N/A
Blue
-X50:2L3
V
Ph Seq
V
ACB
Result (Pass/Fail)
-X10:1
V
V
PASS
N/A
-X10:4
V
V
PASS
N/A
N/A
-X10:7
V
V
PASS
N/A
N/A
VAB:
V
+16CFA01 Metering Panel Terminal -P1
VAB:
PASS
ABC
VERIFICATIONS TESTS – CE241/242/243 (TP5) MEASURED VALUES Core 2a-2n +17MKC10 (Excitation)
PHASE
Core da-dn +17MEY11 (Governor)
+16BAA20 -Spare
Result (Pass/Fail)
Red
-X0:1-33
V
-X53:1
V
TX80:31:32
V
PASS
Yellow
-X0:2-33
V
-X53:2
V
TX80:33:34
V
PASS
Blue
-X0:3-33
V
TX80:35:36
V
PASS
ACB
TX83:31:32
V
PASS
Ph Seq
Execution OU
VHH
Executed by
Checked by
Approved by
Name
Sign
Name
Sign
Name
Sign
K. Herrera
KeHe
Th. König
ThKn
St. Herold
StHe
31/43
Date 2018-02-02
Tarbela 4th Extension HP Rev.
VOITH Document No.
Commissioning Instruction
版本
2AEP02-0000-02296008
Generator [U16]
1
Project Document No.
Electrical Protection
TAR4-600F-9493-00 9.7. OVERVOLTAGE (59) PROTECTION TEST -F311 / -F312 Temporary Change the setting V>115%Un at 60%U ≅ 10800V, t=2.9s. Temporary Change the setting V>>130%Un at 70%U ≅ 12600V, t=0.1s. Close the UAT Circuit Breaker. Close the HV Circuit Breaker, =B19-Q1 and =B19-Q3 Unit to nominal speed. Close the excitation breaker with zero voltage. Close the Generator Circuit Breaker, =16BAA20.GS100. Increase slowly the generator voltage until alarm stage, 60%Un ≅ 10800V, t=2.9s Check the alarm Over Voltage Alarm on Automation Panel. Increase slowly the generator voltage at until trip stage, 70%Un ≅ 12600V, t=0.1s Check the Lockout Relay -K101/-K201_Trip HVCB: No Trip. Check the Lockout Relay -K102/-K202_Trip GCB: Trip. Check the Lockout Relay -K103/-K203_Trip LVCB: Trip. Check the Lockout Relay -K104/-K204_Trip Excitation CB: Trip. Check the Lockout Relay -K105/-K205_Trip Turbine: Trip. Check the Lockout Relay -K106/-K206_Trip Gen firefighting system: No Trip. Check the alarm Overvoltage Protection Trip on Automation Panel. Attach trip record of the relay. Reset the alarms and trip. Put back the normal setting the protections -F311/-F312. The setting V>60%Un at 115% U = 20780V, t=2.9s. The setting V>>65%Un at 130% U = 23400V, t=0.1s.
Execution OU
VHH
Executed by
Checked by
Approved by
Name
Sign
Name
Sign
Name
Sign
K. Herrera
KeHe
Th. König
ThKn
St. Herold
StHe
32/43
Date 2018-02-02
Tarbela 4th Extension HP Rev.
VOITH Document No.
Commissioning Instruction
版本
2AEP02-0000-02296008
Generator [U16]
1
Project Document No.
Electrical Protection
TAR4-600F-9493-00 9.8. CHECKING VOLTAGE CIRCUIT (100% Un) Unit to nominal speed. Close the excitation breaker. Increase slowly the generator voltage at 100% of Un ≅ 18000 V. Check all voltage circuits, phase rotation and record the values.
VERIFICATIONS TESTS – CE231/232/233 (TP4) MEASURED VALUES Core 1a-1n Core 2a-2n PHASE
+16CHA11 -F311 / P345 Gen. Protection Main
+16CHA12 -F312 / P342 Gen. Protection Main
V V V V
Red Yellow Blue VN Ph Seq
V V V V
ACB
Core da-dn
+17MKC10 (Excitation)
(Pass/Fail)
V TX80: 01-02 V TX80: 03-04 V TX80: 05-06
TX0: 10-34 TX0: 11-34 TX0: 12-34 N/A
ACB
Result
+16BAA20 -Spare
V V V V
TX83: 01-02
ABC
ACB
PASS PASS PASS PASS PASS
VERIFICATIONS TESTS – CE241/242/243 (TP5) MEASURED VALUES Core 1a-1n +16CRA11 Synchronization Panel
PHASE Terminal
Red
-X50:2L1
Yellow
-X50:2L2
Blue
-X50:2L3
Ph Seq
-K7 (Synchronizer)
V V V
V
VAB:
ACB
+16CFA01 Metering Panel -K8 (Synchro check)
V
VAB: N/A
-X10:4
N/A
N/A
-X10:7
N/A
N/A
+17MKC10 (Excitation)
Red
-X0:1-33
Yellow
-X0:2-33
Blue
-X0:3-33
Ph Seq
V V V
Core da-dn +16BAA20 -Spare
V V
-X53:2
TX80:31:32 TX80:33:34 TX80:35:36
ACB
Execution OU
VHH
TX83:31:32
Executed by
V PASS V PASS V PASS
ABC
+17MEY11 (Governor) -X53:1
-P1
V V V
-X10:1
N/A
VERIFICATIONS TESTS – CE241/242/243 (TP5) MEASURED VALUES Core 2a-2n PHASE
Terminal
Checked by
V V V V
Approved by
Name
Sign
Name
Sign
Name
Sign
K. Herrera
KeHe
Th. König
ThKn
St. Herold
StHe
33/43
Result (Pass/Fail)
Result (Pass/Fail)
PASS PASS PASS PASS Date 2018-02-02
Tarbela 4th Extension HP Rev.
VOITH Document No.
Commissioning Instruction
版本
2AEP02-0000-02296008
Generator [U16]
1
Project Document No.
Electrical Protection
TAR4-600F-9493-00 9.9. OVERFREQUENCY (81O) PROTECTION TEST -F311 / -F312 Close the UAT Circuit Breaker. Close the HV Circuit Breaker, =B19-Q1 and =B19-Q3 Unit to nominal speed. Close the excitation breaker with zero voltage. Close the Generator Circuit Breaker, =16BAA20.GS100. Increase the generator voltage up to 100%Un = 18000V Increase the generator frequency at until alarm stage, 51.6Hz, t=2s. Check the alarm Overfrequency Alarm on Automation Panel. Increase the generator frequency at until trip stage 52.5Hz, t=0.1s Check the Lockout Relay -K101 / -K201_Trip HVCB: No Trip. Check the Lockout Relay -K102 / -K202_Trip GCB: Trip. Check the Lockout Relay -K103 / -K203_Trip LVCB: No Trip. Check the Lockout Relay -K104 / -K204_Trip Excitation CB: No Trip. Check the Lockout Relay -K105 / -K205_Trip Turbine: No Trip. Check the Lockout Relay -K106_Trip Gen firefighting system: No Trip. Check the alarm Overfrequency Protection Trip on Automation Panel. Attach trip record of the relay. Reset the alarms and trip.
Execution OU
VHH
Executed by
Checked by
Approved by
Name
Sign
Name
Sign
Name
Sign
K. Herrera
KeHe
Th. König
ThKn
St. Herold
StHe
34/43
Date 2018-02-02
Tarbela 4th Extension HP Rev.
VOITH Document No.
Commissioning Instruction
版本
2AEP02-0000-02296008
Generator [U16]
1
Project Document No.
Electrical Protection
TAR4-600F-9493-00 9.10. UNDERFREQUENCY (81U) PROTECTION TEST -F311 / -F312 Close the UAT Circuit Breaker. Close the HV Circuit Breaker, =B19-Q1 and =B19-Q3 Unit to nominal speed. Close the excitation breaker with zero voltage. Close the Generator Circuit Breaker, =16BAA20.GS100. Increase the generator voltage up to 100%Un = 18000V Decrease the generator frequency at until alarm stage, 47.5Hz, t=2s. Check the alarm Underfrequency Alarm on Automation Panel. Decrease the generator frequency at until trip stage 46.5Hz, t=0.1s Check the Lockout Relay -K101_Trip HVCB: Trip. Check the Lockout Relay -K102_Trip GCB: Trip. Check the Lockout Relay -K103_Trip LVCB: Trip. Check the Lockout Relay -K104_Trip Excitation CB: Trip. Check the Lockout Relay -K105_Trip Turbine: Trip. Check the Lockout Relay -K106_Trip Gen firefighting system: No Trip. Check the alarm Underfrequency Protection Trip on Automation Panel. Attach trip record of the relay. Reset the alarms and trip.
Execution OU
VHH
Executed by
Checked by
Approved by
Name
Sign
Name
Sign
Name
Sign
K. Herrera
KeHe
Th. König
ThKn
St. Herold
StHe
35/43
Date 2018-02-02
Tarbela 4th Extension HP Rev.
VOITH Document No.
Commissioning Instruction
版本
2AEP02-0000-02296008
Generator [U16]
1
Project Document No.
Electrical Protection
TAR4-600F-9493-00 9.11. UNDERVOLTAGE (27) PROTECTION TEST -F311 / -F312 Close the UAT Circuit Breaker. Close the HV Circuit Breaker, =B19-Q1 and =B19-Q3 Unit to nominal speed. Close the excitation breaker with zero voltage. Increase the generator voltage up to 100%Un = 18000V Close the Generator Circuit Breaker, =16BAA20.GS100. Decrease slowly the generator voltage at until alarm stage, 15380V, t=3s. Check the alarm Undervoltaje Alarm on Automation Panel. Decrease slowly the generator voltage at until trip stage 13580, t=0.1s Check the Lockout Relay -K101_Trip HVCB: No Trip. Check the Lockout Relay -K102_Trip GCB: Trip. Check the Lockout Relay -K103_Trip LVCB: No Trip. Check the Lockout Relay -K104_Trip Excitation CB: Trip. Check the Lockout Relay -K105_Trip Turbine: Trip. Check the Lockout Relay -K106_Trip Gen firefighting system: No Trip. Check the alarm Underfrequency Protection Trip on Automation Panel. Attach trip record of the relay. Reset the alarms and trip.
9.12. END OF FUNCTIONAL OPEN CIRCUIT TESTTING - GENERATOR PROTECTION End of testing voltage dependent protection relays of generator. In the -F311 & -F312 Protection, Change Temporary the setting: -F311: 3D.10
V/Hz>1 Status:
from
“Enabled”
to
“Disabled”
-F312: 3D.10
V/Hz>1 Status:
from
“Enabled”
to
“Disabled”
Protection is ready for open circuit generator characteristic test. After circuit generator characteristic test, put back the normal setting of the protections: -F311: 3D.10
V/Hz>1 Status:
from
“Disabled”
to
“Enabled”
-F312: 3D.10
V/Hz>1 Status:
from
“Disabled”
to
“Enabled”
Execution OU
VHH
Executed by
Checked by
Approved by
Name
Sign
Name
Sign
Name
Sign
K. Herrera
KeHe
Th. König
ThKn
St. Herold
StHe
36/43
Date 2018-02-02
Tarbela 4th Extension HP Rev.
VOITH Document No.
Commissioning Instruction
版本
2AEP02-0000-02296008
Generator [U16]
1
Project Document No.
Electrical Protection
TAR4-600F-9493-00
10. ANNEX
Execution OU
VHH
Executed by
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Approved by
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Sign
Name
Sign
Name
Sign
K. Herrera
KeHe
Th. König
ThKn
St. Herold
StHe
37/43
Date 2018-02-02
VOITH Document No.
Commissioning Instruction
版本
2AEP02-0000-02296008
Generator [U16]
1
Project Document No.
Electrical Protection
TAR4-600F-9493-00
Commissioning Instruction Generator Electrical Protection [U16] (WET COMMISSIONING) Employer’s Representative: __________________________
_____________________
Muhammad Idrees, Dy. Director (Electrical)
Sikander Shah, Director (Electrical)
_______________________
_______________________
Muhammad Iqbal, Pr. Engineer (C&I)
Todor Dimitrov, RE Commissioning
Engineer’s Representative:
Voith Representative: _____________________
_____________________
Kennedy Herrera Commissioning Engineer
Varujan COCYAN Lead Commissioning Engineer
Revision 版本
Page No. 页码
Description 改版说明
Executed by 执行
Approved by 批准
Date 日期
1 2 3 4 5
All
As Built
K. Herrera
V. Cocyan
2018-02-04
Execution OU
VHH
Executed by
Checked by
Approved by
Name
Sign
Name
Sign
Name
Sign
K. Herrera
KeHe
Th. König
ThKn
St. Herold
StHe
1/43
Date 2018-02-02
Tarbela 4th Extension HP Rev.
VOITH Document No.
Commissioning Instruction
版本
2AEP02-0000-02296008
Generator [U16]
1
Project Document No.
Electrical Protection
TAR4-600F-9493-00 TABLE OF CONTENTS 1.
PURPOSE OF TESTS..................................................................................................................................4
2.
REFERENCE DOCUMENT ..........................................................................................................................4
3.
SCOPE OF TEST .........................................................................................................................................4
4.
TOOLS – MEASUREMENT AND TEST EQUIPMENT ...............................................................................5
5.
GENERAL RECOMENDATIONS ................................................................................................................5
6.
LIST OF THE ELECTRICAL PROTECTION ACTIVES DURING TESTS ..................................................5
7.
GENERADOR THREE PHASE SHORT CIRCUIT PROTECTION TEST ...................................................8 7.1. UNIFILAR ARRANGEMENT ......................................................................................................................8 7.2. LIST OF THE ELECTRICAL PROTECTION INHIBIT DURING TESTS.....................................................9 7.3. SPECIFIC ARRANGEMENT FOR GENERADOR SHORT CIRCUIT TEST ........................................... 10 7.4. CHECKING OF CURRENT CIRCUITS (10% / 100%IN) ......................................................................... 11 7.5. GENERATOR DIFFERENTIAL (87G) PROTECTION TEST -F311 / MICOM P345 ............................... 13 7.6. CURRENT UNBALANCE (46) MAIN PROTECTION TEST -F311 / MICOM P345 ................................. 14 7.7. CURRENT UNBALANCE (46) BACKUP PROTECTION TEST -F312/ MICOM P342 ............................ 15 7.8. END OF FUNCTIONAL SHORT CIRCUIT TESTING - GENERATOR PROTECTION ........................... 16
8.
GSU TRANSFORMER SHORT CIRCUIT PROTECTION TEST.............................................................. 17 8.1. UNIFILAR ARRANGEMENT BY 3-PHASE SHORT CIRCUIT TEST ...................................................... 17 8.2. SPECIFIC ARRANGEMENT FOR TRANSFORMER 3-PHASE SHORT CIRCUIT TEST ...................... 18 8.3. CHECKING OF CURRENT CIRCUITS (10%IN AND 20%IN) ................................................................... 18 8.4. GSU_TRANSFORMER DIFFERENTIAL (87T) MAIN PROTECTION TEST -F321. .............................. 20 8.5. GSU_TRANSFORMER DIFFERENTIAL (87T) BACKUP PROTECTION TEST -F322. ......................... 21 8.6. UNDER IMPEDANCE (21) PROTECTION TEST –F311 / - F312 ........................................................... 22 8.7. UNIFILAR ARRANGEMENT BY 1-PHASE SHORT CIRCUIT TEST ...................................................... 23 8.8. SPECIFIC ARRANGEMENT FOR TRANSFORMER 1-PHASE SHORT CIRCUIT TEST ...................... 24 8.9. CHECKING OF CURRENT CIRCUITS (20%IN) ..................................................................................... 24 8.10. RESTRICTED EARTH FAULT (64REF) PROTECTION TEST –F321 / - F322..................................... 25 8.11. END OF FUNCTIONAL SHORT CIRCUIT TEST – GSU-TRANSF. PROTECTION ............................. 25
Execution OU
VHH
Executed by
Checked by
Approved by
Name
Sign
Name
Sign
Name
Sign
K. Herrera
KeHe
Th. König
ThKn
St. Herold
StHe
2/43
Date 2018-02-02
Tarbela 4th Extension HP Rev.
VOITH Document No.
Commissioning Instruction
版本
2AEP02-0000-02296008
Generator [U16]
1
Project Document No.
Electrical Protection
TAR4-600F-9493-00 9.
GENERATOR OPEN CIRCUIT PROTECTION TEST .............................................................................. 26 9.1. UNIFILAR ARRANGEMENT FOR GENERATOR OPEN CIRCUIT TEST .............................................. 26 9.2. SPECIFIC ARRANGEMENT FOR OPEN CIRCUIT PROTECTION TEST ............................................. 27 9.3. 100% STATOR EARTH FAULT (64S) PROTECTION -F311 AT GENERATION SIDE .......................... 27 9.4. 95% STATOR EARTH FAULT (64S) PROTECTION -F311.................................................................... 28 9.5. 100% STATOR EARTH FAULT (64S) PROTECTION -F311 AT NEUTRAL SIDE ................................. 29 9.6. CHECKING VOLTAGE CIRCUIT (∼ 20% UN) ......................................................................................... 30 9.7. OVERVOLTAGE (59) PROTECTION TEST -F311 / -F312..................................................................... 32 9.8. CHECKING VOLTAGE CIRCUIT (100% UN).......................................................................................... 33 9.9. OVERFREQUENCY (81O) PROTECTION TEST -F311 / -F312 ............................................................ 34 9.10. UNDERFREQUENCY (81U) PROTECTION TEST -F311 / -F312 ........................................................ 35 9.11. UNDERVOLTAGE (27) PROTECTION TEST -F311 / -F312 ................................................................ 36 9.12. END OF FUNCTIONAL OPEN CIRCUIT TESTTING - GENERATOR PROTECTION ......................... 36
10. ANNEX ...................................................................................................................................................... 37 10.1. PROTECTION TEST REPORT..................................................................................................................... 38 10.2. BACK CHARGING OF MAIN TRANSFORMERS / INRUSH CURRENT ................................................................ 39 10.3. PHASE ROTATION CHECK FROM MAIN TRANSFORMER .............................................................................. 40 10.4. PHASE ROTATION CHECK FROM GENERATOR ........................................................................................... 41 10.5. DUMMY SYNCHRONIZATION ..................................................................................................................... 42 10.6. SYNCHRONIZATION.................................................................................................................................. 43
Execution OU
VHH
Executed by
Checked by
Approved by
Name
Sign
Name
Sign
Name
Sign
K. Herrera
KeHe
Th. König
ThKn
St. Herold
StHe
3/43
Date 2018-02-02
Tarbela 4th Extension HP Rev.
VOITH Document No.
Commissioning Instruction
版本
2AEP02-0000-02296008
Generator [U16]
1
Project Document No.
Electrical Protection
TAR4-600F-9493-00 1.
PURPOSE OF TESTS The purpose of these test, is to verify the correct operation of protective and control system together, also verify current and voltage circuits, having in consideration secondary circuits and the polarity of current and voltage transformers. Also, with this test will verify the stability of the protection differential of generator, the protection differential of transformer. Current document summarize basic considerations for protection primary tests of generator with running machine.
2.
REFERENCE DOCUMENT The used documents for elaborate this procedure are integrate of the followed:
3.
[1]
No. 2PPE05-010101303012
Rev. D
Overall Single Line Diagram Power House and 220/500kV Switchyard
[2]
No. 2PPE05-010101303013
Rev. C
Main Single Line Diagram Unit 15 to 17 and 500kV Switchyard Bay 19 to 21
[3]
No. 2PPE05-010101303014
Rev. L
Single Line Relay & Metering Diagram Unit 15-16 and 500kV Switchyard Bay 19-20; Unit 17 and 500kV Switchyard Bay
[4]
No. 2AEP02-000001740949
Rev. G
Setting Calculation and Parameterization Unit 15/16/17 and Overhead Line and 500kV Switchyard Protection
[5]
No. 2AEP02-010001819165
Rev. -
Unit Protection System Main Protection System
[6]
No. 2AEP02-010001819168
Rev. -
Unit Protection System Back-Up Protection System
[7]
No. 2AEP02-010001819170
Rev. -
Unit 17 Protection System Protection System Accessory
SCOPE OF TEST Scope includes the following tests to be done: Short Circuit Generator Protection Test. Short Circuit Step Up Transformer Protection Test. Open Circuit Generator Protection Test. Rotor Earth Fault Protection Test. Generator On Load Protection Test.
Execution OU
VHH
Executed by
Checked by
Approved by
Name
Sign
Name
Sign
Name
Sign
K. Herrera
KeHe
Th. König
ThKn
St. Herold
StHe
4/43
Date 2018-02-02
Tarbela 4th Extension HP Rev.
VOITH Document No.
Commissioning Instruction
版本
2AEP02-0000-02296008
Generator [U16]
1
Project Document No.
Electrical Protection
TAR4-600F-9493-00 4.
TOOLS – MEASUREMENT AND TEST EQUIPMENT Voltmeters (range from 0 a 120 Volts). Ammeters (range from 0 a 0.1 A and 0 a 10 A) Screwdrivers Portable radios between 500KV Switchyard, unit control hall and gsu transformer hall.
5.
GENERAL RECOMENDATIONS Before attempting any maneuver related to energizing, switchyard area must be checked for the presence of any provisional ground, equipment or material used during erection works, such like ladders, ropes tools, etc. All responsible person and coordinators, must informed of the exact time when energizing manoeuvres will be initiated. When measuring voltage at terminals connections, special care with the handling of bridges & groundings has to be taken. Do not leave loose connections or open terminals. Special care has to be taken when working at terminals with current, with the use of links or short circuit bridges. For no reason should leave CT’s in open circuit; then, should verify continuosly to avoid loose connections or open terminals.
6.
LIST OF THE ELECTRICAL PROTECTION ACTIVES DURING TESTS Unit Protection Main, MICOM P345, -F311: IMPEDANCE PROTECTION Z1 (ANSI 21). IMPEDANCE PROTECTION Z2 (ANSI 21). OVEREXCITATION (ANSI 24). UNDERVOLTAGE (ANSI 27). REVERSE POWER (ANSI 32). LOSS OF EXCITATION (ANSI 40). UNBALANCE LOAD (ANSI 46). GENERATOR CB FAILURE (ANSI 50BF). OVERVOLTAGE (ANSI 59). FUSE FAILURE OF VT (ANSI 60). ROTOR EARTH FAULT (ANSI 64R). STATOR EARTH FAULT 100% (ANSI 64S). STATOR EARTH FAULT 95% (ANSI 64S). FREQUENCY PROTECTION (ANSI 81O/81U). GENERATOR DIFFERENTIAL (ANSI 87G).
Execution OU
VHH
Executed by
Checked by
Approved by
Name
Sign
Name
Sign
Name
Sign
K. Herrera
KeHe
Th. König
ThKn
St. Herold
StHe
5/43
Date 2018-02-02
Tarbela 4th Extension HP Rev.
VOITH Document No.
Commissioning Instruction
版本
2AEP02-0000-02296008
Generator [U16]
1
Project Document No.
Electrical Protection
TAR4-600F-9493-00 Unit Protection Backup, MICOM P342, -F312: TURBINE ABNORMAL FREQUENCY (ANSI 12) IMPEDANCE PROTECTION Z1 (ANSI 21). IMPEDANCE PROTECTION Z2 (ANSI 21). UNDERVOLTAGE (ANSI 27). REVERSE POWER (ANSI 32). LOSS OF EXCITATION (ANSI 40). UNBALANCE LOAD (ANSI 46). OVERVOLTAGE (ANSI 59). OVEREXCITATION (ANSI 59F). FUSE FAILURE OF VT (ANSI 60). FREQUENCY PROTECTION (ANSI 81O/81U). Split winding O/C Protection, MICOM P14N, -F315 OVERCURRENT (ANSI 50) GT Protection Main, MICOM P643, -F321:
TRANSFORMER OVERFLUXING (ANSI 24) 500KV LINE BACK-UP OVERCURRENT (ANSI 50) TRANSFORMER OVERCURRENT (ANSI 51) BACKUP EARTH FAULT (ANSI 51N) TRANSFORMER OVERVOLTAGE (ANSI 59) EARTH DIFFERENTIAL REF (ANSI 64) TRANSFORMER DIFFERENTIAL (ANSI 87T) GT Protection Backup, MICOM P642, -F322:
BACKUP EARTH FAULT (ANSI 51N) EARTH DIFFERENTIAL REF (ANSI 64) TRANSFORMER DIFFERENTIAL (ANSI 87T) Excitation Transformer Protection, MICOM P14N, -F351: THERMAL OVERLOAD (ANSI 49) OVERCURRENT (ANSI 50/51)
Execution OU
VHH
Executed by
Checked by
Approved by
Name
Sign
Name
Sign
Name
Sign
K. Herrera
KeHe
Th. König
ThKn
St. Herold
StHe
6/43
Date 2018-02-02
Tarbela 4th Extension HP Rev.
VOITH Document No.
Commissioning Instruction
版本
2AEP02-0000-02296008
Generator [U16]
1
Project Document No.
Electrical Protection
TAR4-600F-9493-00 Line Protection Main, MICOM P545, -F331A / -F331B: LINE DIFFERENTIAL PROTECTION (ANSI 87L) LV OVERCURRENT (ANSI 50/51)
Line Protection Backup, 7SD80, -F332A / -F332B: LINE DIFFERENTIAL PROTECTION (ANSI 87L)
Execution OU
VHH
Executed by
Checked by
Approved by
Name
Sign
Name
Sign
Name
Sign
K. Herrera
KeHe
Th. König
ThKn
St. Herold
StHe
7/43
Date 2018-02-02
Tarbela 4th Extension HP Rev.
VOITH Document No.
Commissioning Instruction
版本
2AEP02-0000-02296008
Generator [U16]
1
Project Document No.
Electrical Protection
TAR4-600F-9493-00 7.
GENERADOR THREE PHASE SHORT CIRCUIT PROTECTION TEST 7.1. UNIFILAR ARRANGEMENT =B19
To UNIT 15
Generator 3P-Short Circuit Test Three phase short circuit location
M
M
UNIT 16
Execution OU
VHH
Executed by
Checked by
Approved by
Name
Sign
Name
Sign
Name
Sign
K. Herrera
KeHe
Th. König
ThKn
St. Herold
StHe
8/43
Date 2018-02-02
Tarbela 4th Extension HP Rev.
VOITH Document No.
Commissioning Instruction
版本
2AEP02-0000-02296008
Generator [U16]
1
Project Document No.
Electrical Protection
TAR4-600F-9493-00 7.2. LIST OF THE ELECTRICAL PROTECTION INHIBIT DURING TESTS Unit Protection Main, MICOM P345, -F311: UNDERVOLTAGE (ANSI 27):
42.09
V<2 Status
“Disabled”
IMPEDANCE PROTECTION (ANSI 21):
09.0F System Backup
“Disabled”
FUSE FAILURE OF VT (ANSI 60):
09.21 Supervision
“Disabled”
Unit Protection Backup, MICOM P342, -F312: UNDERVOLTAGE (ANSI 27):
42.09
V<2 Status
“Disabled”
IMPEDANCE PROTECTION (ANSI 21):
09.0F System Backup
“Disabled”
FUSE FAILURE OF VT (ANSI 60):
09.21 Supervision
“Disabled”
GT Protection Main, MICOM P643, -F321:
TRANSFORMER DIFFERENTIAL (ANSI 87T): 31.01
Trans Diff
“Disabled”
LV OVERCURRENT (ANSI 50/51):
35.12
I>2 Status
“Disabled”
TRANSFORMER DIFFERENTIAL (ANSI 87T): 31.01
Trans Diff
“Disabled”
GT Protection Backup, MICOM P642, -F322:
Line Protection Main, MICOM P545, -F331A / -F331B:
LINE DIFFERENTIAL (ANSI 87L):
33.01 Phase Diff
“Disabled”
Line Protection Backup, 7SD82, -F332A / -F332B:
“OFF”
LINE DIFFERENTIAL (ANSI 87L): 1201 Ph current comparison Incoming from Unit Auxiliary Transformer U16 (+00BBB16) / -F001:
UNDER VOLTAGE CONTROL (27): 42.04
Execution OU
VHH
Executed by
V<1 Function
Checked by
“Disabled”
Approved by
Name
Sign
Name
Sign
Name
Sign
K. Herrera
KeHe
Th. König
ThKn
St. Herold
StHe
9/43
Date 2018-02-02
Tarbela 4th Extension HP Rev.
VOITH Document No.
Commissioning Instruction
版本
2AEP02-0000-02296008
Generator [U16]
1
Project Document No.
Electrical Protection
TAR4-600F-9493-00 7.3. SPECIFIC ARRANGEMENT FOR GENERADOR SHORT CIRCUIT TEST Three phases short circuit is installed at the 18kV IPB duct, see drawing above. Check that the short circuit can withstand the unit nominal current 16743 A. Braids between Generator and IPBD are connected. Excitation system connected to temporarily auxiliary feed. Step-up Transformer disconnected. GS620, GS610, AND =B19Q10 are in open position. GS210 in closed position. GS100 in closed position with trip 1 and trip 2 inhibited.
Execution OU
VHH
Executed by
Checked by
Approved by
Name
Sign
Name
Sign
Name
Sign
K. Herrera
KeHe
Th. König
ThKn
St. Herold
StHe
10/43
Date 2018-02-02
Tarbela 4th Extension HP Rev.
VOITH Document No.
Commissioning Instruction
版本
2AEP02-0000-02296008
Generator [U16]
1
Project Document No.
Electrical Protection
TAR4-600F-9493-00 7.4. CHECKING OF CURRENT CIRCUITS (10% / 100%In) Unit to nominal speed. Close the excitation breaker. Increase slowly the current to 10 % of the nominal (1674 A) Check stability of the generator and transformer differential protection -F311: IDIF_A: _ A__ IBIAS_A: _
(-F311) A__
-F311: IDIF_B: _
A__
IBIAS_B:
_
A__
-F311: IDIF_C: _
A__
IBIAS_C:
_
A__
Check stability of the generator split winding protection (-F315) -F315: I_A: _ A__ -F315: I_B:
_
A__
-F315: I_C:
_
A__
Check all current circuits and record the values current. Increase slowly the current to 100 % of the nominal current (16740 A) -F311: IDIF_A: _
A__
IBIAS_A:
_
A__
-F311: IDIF_B: _
A__
IBIAS_B:
_
A__
-F311: IDIF_C: _
A__
IBIAS_C:
_
A__
Check stability of the generator split winding protection -F315: I_A:
_
A__
-F315: I_B:
_
A__
-F315: I_C:
_
A__
Check all current circuits and record the values current.
Execution OU
VHH
Executed by
Checked by
Approved by
Name
Sign
Name
Sign
Name
Sign
K. Herrera
KeHe
Th. König
ThKn
St. Herold
StHe
11/43
Date 2018-02-02
Tarbela 4th Extension HP Rev.
VOITH Document No.
Commissioning Instruction
版本
2AEP02-0000-02296008
Generator [U16]
1
Project Document No.
Electrical Protection
TAR4-600F-9493-00
CT – GENERATOR NEUTRAL SIDE (I≅10%In / 100%)
PHASE
16BAA10.CE111
16BAA10.CE112
16BAA10.CE113
16BAA10.CE114
+17
+16CFA01
+16CHA11
+16CHA12
Excitation Panel
Metering Panel
Protection Panel
Protection Panel
-A1 (Excitation)
-P3 (Metering)
-F311 / P345 (protection)
Result
(Pass/Fail)
-F312 / P642 (protection)
A
A/
kA
A/
kA
A/
kA
A/
kA
PASS
B
A/
kA
A/
kA
A/
kA
A/
kA
PASS
C
A/
kA
A/
kA
A/
kA
A/
kA
PASS
CT – GCB TRANSFORMER SIDE (I≅10%In / 100%)
PHASE
16BAA20.CE111
16BAA20.CE112
16BAA20.CE112
Result
+16CHA11
+16CHA11
+16CHA12
Protection Panel
Protection Panel
Protection Panel
(Pass/Fail)
-F311 / P345 (protection)
-F331A / P545 (protection)
-F322 / P642 (protection)
A
A/
kA
A/
kA
A/
kA
PASS
B
A/
kA
A/
kA
A/
kA
PASS
C
A/
kA
A/
kA
A/
kA
PASS
CT – GCB GENERATOR SIDE (I≅10%In / 100%)
PHASE
16BAA20.CE121
16BAA20.CE122
Result
+16CHA11
GCB: +16BAA21
(Pass/Fail)
Protection Panel -F321 / P643 (protection)
-T.X91: 51, 53, 55 (spare) (secondary side)
A
A/
kA
A/
kA
PASS
B
A/
kA
A/
kA
PASS
C
A/
kA
A/
kA
PASS
Execution OU
VHH
Executed by
Checked by
Approved by
Name
Sign
Name
Sign
Name
Sign
K. Herrera
KeHe
Th. König
ThKn
St. Herold
StHe
12/43
Date 2018-02-02
Tarbela 4th Extension HP Rev.
VOITH Document No.
Commissioning Instruction
版本
2AEP02-0000-02296008
Generator [U16]
1
Project Document No.
Electrical Protection
TAR4-600F-9493-00 7.5. GENERATOR DIFFERENTIAL (87G) PROTECTION TEST -F311 / MICOM P345 Decrease slowly the current up to 0A Short-circuit secondary terminal: -X311I:11-14 Unit to nominal speed. The excitation breaker is closed. The Generator Circuit Breaker is closed, =16BAA20.GS100. In extracted position, Close the UAT Circuit Breaker. Close the HV Circuit Breaker, =B19-Q1 and =B19-Q3 Increase slowly the generator current until the trip @ 850 A. Check the Lockout Relay -K101_Trip HVCBs: No Trip. Check the Lockout Relay -K102_Trip GCB: Trip. Check the Lockout Relay -K103_Trip LVCB: No Trip. Check the Lockout Relay -K104_Trip Excitation CB: Trip. Check the Lockout Relay -K105_Trip Turbine: Trip. Check the Lockout Relay -K106_Trip Gen firefighting system: Trip. Check the Lockout Relay -K3109_Trip Breaker Failure: Trip. Attach trip record of the relay. Reset the alarms and trip.
Execution OU
VHH
Executed by
Checked by
Approved by
Name
Sign
Name
Sign
Name
Sign
K. Herrera
KeHe
Th. König
ThKn
St. Herold
StHe
13/43
Date 2018-02-02
Tarbela 4th Extension HP Rev.
VOITH Document No.
Commissioning Instruction
版本
2AEP02-0000-02296008
Generator [U16]
1
Project Document No.
Electrical Protection
TAR4-600F-9493-00 7.6. CURRENT UNBALANCE (46) MAIN PROTECTION TEST -F311 / MICOM P345 Excitation breaker in OFF position. Short-circuit secondary terminal: -X311I:11-14 & -X311I 21-24 Unit to nominal speed. Close the excitation breaker. Close the Generator Circuit Breaker, =16BAA20.GS100. In extracted position, Close the UAT Circuit Breaker. Close the HV Circuit Breaker, =B19-Q1 and =B19-Q3 Increase slowly the generator current until the 46 – alarm stage I2 @ 1200 A, t=20s. Check the alarm Negative Phase Sequence O/C Alarm on Automation Panel. Increase slowly the generator current until the 46 – trip stage I2 @ 6000 A, t=100s. Check the Lockout Relay -K101_Trip HVCBs: No Trip. Check the Lockout Relay -K102_Trip GCB: Trip. Check the Lockout Relay -K103_Trip LVCB: No Trip. Check the Lockout Relay -K104_Trip Excitation CB: No Trip. Check the Lockout Relay -K105_Trip Turbine: No Trip. Check the Lockout Relay -K106_Trip Gen firefighting system: No Trip. Check the alarm NPS Thermal Trip on Automation Panel. Check the local signal NPS Thermal Trip on Protection Panel. Attach trip record of the relay. Reset the alarms and trip.
Execution OU
VHH
Executed by
Checked by
Approved by
Name
Sign
Name
Sign
Name
Sign
K. Herrera
KeHe
Th. König
ThKn
St. Herold
StHe
14/43
Date 2018-02-02
Tarbela 4th Extension HP Rev.
VOITH Document No.
Commissioning Instruction
版本
2AEP02-0000-02296008
Generator [U16]
1
Project Document No.
Electrical Protection
TAR4-600F-9493-00 7.7. CURRENT UNBALANCE (46) BACKUP PROTECTION TEST -F312/ MICOM P342 Excitation breaker in OFF position. Short-circuit secondary terminal: -X312I:1-4 In extracted position, Close the UAT Circuit Breaker. Close the HV Circuit Breaker, =B19-Q1 and =B19-Q3 Unit to nominal speed. Close the excitation breaker. Close the Generator Circuit Breaker, =16BAA20.GS100. Increase slowly the generator current until the 46 – alarm stage I2 @ 1200 A, t=20s. Check the alarm Negative Phase Sequence O/C Alarm on Automation Panel. Increase slowly the generator current until the 46 – trip stage I2 @ 6000 A, t=100s. Check the Lockout Relay -K201_Trip HVCBs: No Trip. Check the Lockout Relay -K202_Trip GCB: Trip. Check the Lockout Relay -K203_Trip LVCB: No Trip. Check the Lockout Relay -K204_Trip Excitation CB: No Trip. Check the Lockout Relay -K205_Trip Turbine: No Trip. Check the Lockout Relay -K206_Trip Trf firefighting system: No Trip. Check the alarm NPS Thermal Trip on Automation Panel. Check the local signal NPS Thermal Trip on Protection Panel. Attach trip record of the relay. Reset the alarms and trip.
Execution OU
VHH
Executed by
Checked by
Approved by
Name
Sign
Name
Sign
Name
Sign
K. Herrera
KeHe
Th. König
ThKn
St. Herold
StHe
15/43
Date 2018-02-02
Tarbela 4th Extension HP Rev.
VOITH Document No.
Commissioning Instruction
版本
2AEP02-0000-02296008
Generator [U16]
1
Project Document No.
Electrical Protection
TAR4-600F-9493-00
7.8. END OF FUNCTIONAL SHORT CIRCUIT TESTING - GENERATOR PROTECTION
End of testing current dependent relays of generator. Protection is ready for Short circuit generator characteristic test. After the Short circuit generator characteristic test, put back the protection settings
Unit Protection Backup, MICOM P643, -F321: “Enabled”
TRANSFORMER DIFFERENTIAL (ANSI 87T): 31.01 Trans Diff
Unit Protection Backup, MICOM P342, -F322: “Enabled”
TRANSFORMER DIFFERENTIAL (ANSI 87T): 31.01 Trans Diff Remove three phases short circuit is installed at the 18kV IPB duct.
Execution OU
VHH
Executed by
Checked by
Approved by
Name
Sign
Name
Sign
Name
Sign
K. Herrera
KeHe
Th. König
ThKn
St. Herold
StHe
16/43
Date 2018-02-02
Tarbela 4th Extension HP Rev.
VOITH Document No.
Commissioning Instruction
版本
2AEP02-0000-02296008
Generator [U16]
1
Project Document No.
Electrical Protection
TAR4-600F-9493-00 8.
GSU TRANSFORMER SHORT CIRCUIT PROTECTION TEST 8.1. UNIFILAR ARRANGEMENT BY 3-PHASE SHORT CIRCUIT TEST =B19
To UNIT 15
GSU 3PH-Short Circuit Test Three phase short circuit location
M
M
UNIT 16
Execution OU
VHH
Executed by
Checked by
Approved by
Name
Sign
Name
Sign
Name
Sign
K. Herrera
KeHe
Th. König
ThKn
St. Herold
StHe
17/43
Date 2018-02-02
Tarbela 4th Extension HP Rev.
VOITH Document No.
Commissioning Instruction
版本
2AEP02-0000-02296008
Generator [U16]
1
Project Document No.
Electrical Protection
TAR4-600F-9493-00 8.2. SPECIFIC ARRANGEMENT FOR TRANSFORMER 3-PHASE SHORT CIRCUIT TEST Install the three phases short circuit with the temporary earthing kits at the 500kV Switchyard. See drawing above. Check that the short circuit can withstand the generator nominal current 603A, 500 kV side. GSU Transformer disconnected from the 500kV Switchyard. (=B19+Q10 are open position). Excitation system connected to temporarily auxiliary feed. Disconnecting E/S GS620, GS610 are in open position. Generator Disconnecting GS210 are in closed position. GCB GS100 in remote and available for operation.
8.3. CHECKING OF CURRENT CIRCUITS (10%In and 20%In) Unit to nominal speed. Close the excitation breaker with zero voltage. Close the generator circuit breaker GS100. Increase slowly the current up to 10 % of the nominal (LV: 1674A, HV: 60.3A). Check stability of the transformer differential protection
(-F321/-F322)
-F321/-F322:
IDIF_A: 0.00475 A / 0.0022 A
IBIAS_A: 0.092 A / 0.0928 A
-F321/-F322:
IDIF_B: 0.00460 A / 0.0014 A
IBIAS_B: 0.093 A / 0.0913 A
-F321/-F322:
IDIF_C: 0.00019 A / 0.0015 A
IBIAS_C: 0.095 A / 0.0920 A
Check all current circuits and record the values current. Increase slowly the current up to 20 % of the nominal current (LV: 8372A, HV: 302A). Check stability of the transformer differential protection
(-F321/-F322)
-F321/-F322:
IDIF_A: 0.0043A / 0.0042 A
IBIAS_A: 0.189 A / 0.188 A
-F321/-F322:
IDIF_B: 0.0032 A / 0.0036 A
IBIAS_B: 0.191 A / 0.188 A
-F321/-F322:
IDIF_C: 0.0034 A / 0.0015 A
IBIAS_C: 0.190 A / 0.188 A
Check all current circuits and record the values current.
Execution OU
VHH
Executed by
Checked by
Approved by
Name
Sign
Name
Sign
Name
Sign
K. Herrera
KeHe
Th. König
ThKn
St. Herold
StHe
18/43
Date 2018-02-02
Tarbela 4th Extension HP Rev.
VOITH Document No.
Commissioning Instruction
版本
2AEP02-0000-02296008
Generator [U16]
1
Project Document No.
Electrical Protection
TAR4-600F-9493-00
CT – GCB TRANSFORMER SIDE (I≅10%In / 20%)
PHASE
16BAA20.CE111
16BAA20.CE112
16BAA20.CE112
Result
+16CHA11
+16CHA11
+16CHA12
Protection Panel
Protection Panel
Protection Panel
(Pass/Fail)
-F311 / P345 (protection)
-F331A / P545 (protection)
-F322 / P642 (protection)
A
A/
A
A/
A
A/
A
PASS
B
A/
A
A/
A
A/
A
PASS
C
A/
A
A/
A
A/
A
PASS
CT – TRANSFORMER HV SIDE (I≅10%In / 20%)
PHASE
17BAT10.CE121
17BAT10.CE122
Result
+16CHA11
+16CHA12
Protection Panel
Protection Panel
(Pass/Fail)
-F321 / P643 (protection)
-F332A / 7SD80 (protection)
-F322 / P642 (protection)
A
A/
A
A/
A
A/
A
PASS
B
A/
A
A/
A
A/
A
PASS
C
A/
A
A/
A
A/
A
PASS
Execution OU
VHH
Executed by
Checked by
Approved by
Name
Sign
Name
Sign
Name
Sign
K. Herrera
KeHe
Th. König
ThKn
St. Herold
StHe
19/43
Date 2018-02-02
Tarbela 4th Extension HP Rev.
VOITH Document No.
Commissioning Instruction
版本
2AEP02-0000-02296008
Generator [U16]
1
Project Document No.
Electrical Protection
TAR4-600F-9493-00 8.4. GSU_TRANSFORMER DIFFERENTIAL (87T) MAIN PROTECTION TEST -F321. Decrease slowly the current up to 0A Short-circuit secondary terminal: -X321I:11-14 In extracted position, Close the UAT Circuit Breaker. Close the HV Circuit Breaker, =B19-Q1 and =B19-Q3 Unit to nominal speed. The excitation breaker is closed. The Generator Circuit Breaker is closed, =16BAA20.GS100. Increase slowly the generator current until the trip @ 5000 A. Check the Lockout Relay -K101_Trip HVCBs: Trip. Check the Lockout Relay -K102_Trip GCB: Trip. Check the Lockout Relay -K103_Trip LVCB: Trip. Check the Lockout Relay -K104_Trip Excitation CB: No Trip. Check the Lockout Relay -K105_Trip Turbine: No Trip. Check the Lockout Relay -K206_Trip Trf firefighting system: Trip. Check the Lockout Relay -K3109_Trip Circuit Breaker Failure: Trip. Attach trip record of the relay. Reset the alarms and trip.
Execution OU
VHH
Executed by
Checked by
Approved by
Name
Sign
Name
Sign
Name
Sign
K. Herrera
KeHe
Th. König
ThKn
St. Herold
StHe
20/43
Date 2018-02-02
Tarbela 4th Extension HP Rev.
VOITH Document No.
Commissioning Instruction
版本
2AEP02-0000-02296008
Generator [U16]
1
Project Document No.
Electrical Protection
TAR4-600F-9493-00 8.5. GSU_TRANSFORMER DIFFERENTIAL (87T) BACKUP PROTECTION TEST -F322. Short-circuit secondary terminal: -X321I:1-4 In extracted position, Close the UAT Circuit Breaker. Close the HV Circuit Breaker, =B19-Q1 and =B19-Q3 Unit to nominal speed. The excitation breaker is closed. The Generator Circuit Breaker is closed, =16BAA20.GS100. Increase slowly the generator current until the trip @ 5000 A. Check the Lockout Relay -K201_Trip HVCBs: Trip. Check the Lockout Relay -K202_Trip GCB: Trip. Check the Lockout Relay -K203_Trip LVCB: Trip. Check the Lockout Relay -K204_Trip Excitation CB: No Trip. Check the Lockout Relay -K205_Trip Turbine: No Trip. Check the Lockout Relay -K206_Trip Trf firefighting system: Trip. Check the Lockout Relay -K3109_Trip Circuit Breaker Failure: Trip. Attach trip record of the relay. Reset the alarms and trip.
Execution OU
VHH
Executed by
Checked by
Approved by
Name
Sign
Name
Sign
Name
Sign
K. Herrera
KeHe
Th. König
ThKn
St. Herold
StHe
21/43
Date 2018-02-02
Tarbela 4th Extension HP Rev.
VOITH Document No.
Commissioning Instruction
版本
2AEP02-0000-02296008
Generator [U16]
1
Project Document No.
Electrical Protection
TAR4-600F-9493-00 8.6. UNDER IMPEDANCE (21) PROTECTION TEST –F311 / - F312 In the -F311 Protection, put back temporary the setting:
09.0F System Backup from ““Disabled” to ““Enabled” In the -F312 Protection, put back temporary the setting:
09.0F System Backup from ““Disabled” to ““Enabled” In extracted position, Close the UAT Circuit Breaker. Close the HV Circuit Breaker, =B19-Q1 and =B19-Q3 Unit to nominal speed. The excitation breaker is closed. Close the Generator Circuit Breaker, =16BAA20.GS100. Increase slowly the generator current until the trip @ 5000 A. Check the Lockout Relay -K201_Trip HVCBs: Trip. Check the Lockout Relay -K202_Trip GCB: Trip. Check the Lockout Relay -K203_Trip LVCB: Trip. Check the Lockout Relay -K204_Trip Excitation CB: Trip. Check the Lockout Relay -K205_Trip Turbine: Trip. Check the Lockout Relay -K206_Trip Trf firefighting system: No Trip. Attach trip record of the relay. Reset the alarms and trip.
Execution OU
VHH
Executed by
Checked by
Approved by
Name
Sign
Name
Sign
Name
Sign
K. Herrera
KeHe
Th. König
ThKn
St. Herold
StHe
22/43
Date 2018-02-02
Tarbela 4th Extension HP Rev.
VOITH Document No.
Commissioning Instruction
版本
2AEP02-0000-02296008
Generator [U16]
1
Project Document No.
Electrical Protection
TAR4-600F-9493-00 8.7. UNIFILAR ARRANGEMENT BY 1-PHASE SHORT CIRCUIT TEST =B19
To UNIT 15
GSU 1PH-Short Circuit Test 1 phase to ground short circuit location
M
M
UNIT 16
Execution OU
VHH
Executed by
Checked by
Approved by
Name
Sign
Name
Sign
Name
Sign
K. Herrera
KeHe
Th. König
ThKn
St. Herold
StHe
23/43
Date 2018-02-02
Tarbela 4th Extension HP Rev.
VOITH Document No.
Commissioning Instruction
版本
2AEP02-0000-02296008
Generator [U16]
1
Project Document No.
Electrical Protection
TAR4-600F-9493-00 8.8. SPECIFIC ARRANGEMENT FOR TRANSFORMER 1-PHASE SHORT CIRCUIT TEST Install the single phase short circuit with the temporary earthing kits at the 500kV Switchyard. See drawing above. Check that the short circuit can withstand the generator nominal current 603A, 500 kV side. GSU Transformer disconnected from the 500kV Switchyard. (=B19+Q10 are open position). Excitation system connected to temporarily auxiliary feed. Disconnecting E/S GS620, GS610 are in open position. Generator Disconnecting GS210 are in closed position. GCB GS100 in closed position.
8.9. CHECKING OF CURRENT CIRCUITS (20%In) Unit to nominal speed. Close the excitation breaker with zero voltage. The generator circuit breaker GS100 in closed position. Increase slowly the current up to 10 % of the nominal (LV: 1674A, HV: 60.3A). Check stability of the transformer Differential and REF protection (-F321/-F322) -F321/-F322:
IDIF_REF:
A /_
A
IBIAS_REF:
A /_
A
-F321/-F322:
IDIF_A:
A /_
A
IBIAS_A:
A /_
A
-F321/-F322:
IDIF_B:
A /_
A
IBIAS_B:
A /_
A
-F321/-F322:
IDIF_C:
A /_
A
IBIAS_C:
A /_
A
Increase slowly the current up to 20 % of the nominal (LV: 3348A, HV: 120.6A). Check stability of the transformer Differential and REF protection (-F321/-F322) -F321/-F322:
IDIF_REF:
A /_
A
IBIAS_REF:
A /_
A
-F321/-F322:
IDIF_A:
A /_
A
IBIAS_A:
A /_
A
-F321/-F322:
IDIF_B:
A /_
A
IBIAS_B:
A /_
A
-F321/-F322:
IDIF_C:
A /_
A
IBIAS_C:
A /_
A
CT – TRANSFORMER HV SIDE (I≅10%In / 20%)
PHASE
17BAT10.CE111
17BAT10.CE112
17BAT10.CE113
Result
+16CHA11
+16CHA12
Protection Panel -F321 / P643 (protection)
Protection Panel -F322 / P642 (protection)
SPARE
(Pass/Fail)
A/
N
Execution OU
VHH
A
A/
Executed by
Checked before WET
A
N/A
Checked by
Approved by
Name
Sign
Name
Sign
Name
Sign
K. Herrera
KeHe
Th. König
ThKn
St. Herold
StHe
24/43
Date 2018-02-02
Tarbela 4th Extension HP Rev.
VOITH Document No.
Commissioning Instruction
版本
2AEP02-0000-02296008
Generator [U16]
1
Project Document No.
Electrical Protection
TAR4-600F-9493-00 8.10. RESTRICTED EARTH FAULT (64REF) PROTECTION TEST –F321 / - F322 In the -F321 Protection, Change Temporary the setting: 0A.59
TN1 Polarity
from “Standard” to “Inverted”
In the -F322 Protection, Change Temporary the setting: 0A.59
TN1 Polarity
from “Standard” to “Inverted”
Unit to nominal speed. The excitation breaker is closed. Close the Generator Circuit Breaker, =16BAA20.GS100. In extracted position, Close the UAT Circuit Breaker. Increase slowly the generator current until the trip @ 5000 A. Check the Lockout Relay -K101/-K201_Trip HVCB: Trip. Check the Lockout Relay -K102/-K202_Trip GCB: Trip. Check the Lockout Relay -K103/-K203_Trip LVCB: Trip. Check the Lockout Relay -K104/-K204_Trip Excitation CB: No Trip. Check the Lockout Relay -K105/-K205_Trip Turbine: No Trip. Check the Lockout Relay -K206_Trip Trf firefighting system: Trip. Attach trip record of the relay. Reset the alarms and trip. In the -F321 Protection, put back the normal setting of the protections: 0A.59
TN1 Polarity
from “Inverted” to “Standard”
In the -F322 Protection, put back the normal setting of the protections: 0A.59
TN1 Polarity
from “Inverted” to “Standard”
8.11. END OF FUNCTIONAL SHORT CIRCUIT TEST – GSU-TRANSF. PROTECTION End of testing current dependent relays of transformer. Remove three phases short circuit is installed at the 500kV Switchyard.
Execution OU
VHH
Executed by
Checked by
Approved by
Name
Sign
Name
Sign
Name
Sign
K. Herrera
KeHe
Th. König
ThKn
St. Herold
StHe
25/43
Date 2018-02-02
Tarbela 4th Extension HP Rev.
VOITH Document No.
Commissioning Instruction
版本
2AEP02-0000-02296008
Generator [U16]
1
Project Document No.
Electrical Protection
TAR4-600F-9493-00 9.
GENERATOR OPEN CIRCUIT PROTECTION TEST 9.1. UNIFILAR ARRANGEMENT FOR GENERATOR OPEN CIRCUIT TEST =B19
To UNIT 15
M
M
Bridge Disconneted. Exc. Trf. connected to temporary source.
95% Stator E/F Test Temporary Connection Phase to Ground
100% Stator E/F Test Temporary Connection Neutral to Ground UNIT 16
Execution OU
VHH
Executed by
Checked by
Approved by
Name
Sign
Name
Sign
Name
Sign
K. Herrera
KeHe
Th. König
ThKn
St. Herold
StHe
26/43
Date 2018-02-02
Tarbela 4th Extension HP Rev.
VOITH Document No.
Commissioning Instruction
版本
2AEP02-0000-02296008
Generator [U16]
1
Project Document No.
Electrical Protection
TAR4-600F-9493-00 9.2. SPECIFIC ARRANGEMENT FOR OPEN CIRCUIT PROTECTION TEST GSU Transformer disconnected from the 500kV Switchyard. (=B19+Q10 are open position). Excitation system connected to temporarily auxiliary feed. Disconnecting E/S GS620, GS610 are in open position. Generator Disconnecting GS210 in open position. (Dummy closed position) GCB GS100 in remote and available for operation. Excitation breaker in OFF position. Generator Stopped. Install one 10mm2 wire between phase “RED” and ground in Generator side. Phase “RED” connected to ground was installed at the 18kV side, as drawing above.
9.3. 100% STATOR EARTH FAULT (64S) PROTECTION -F311 AT GENERATION SIDE In the -F311 Protection, Change Temporary the setting: 3B.50
VN>5 Status: from
“Enabled”
to
“Disabled”
3C.10
64S LF Injection: from
“Enabled”
to
“Disabled”
In the Panel +16CHA11 Block 100% SEF by pressing Pushbutton -S314. Close the UAT Circuit Breaker. Close the HV Circuit Breaker, =B19-Q1 and =B19-Q3 Unit to nominal speed. Close the excitation breaker with zero voltage. Unit to nominal speed. Close the Generator Circuit Breaker, =16BAA20.GS100. In the -F311 Protection, Change Temporary the setting: 3C.10
64S LF Injection: from
“Disabled”
to
“Enabled”
In the Panel +16CHA11 Activate 100% SEF by pressing Pushbutton -S314. 100% SEF trip (R2<2000 Ohm, t=1.0s
trip).
Check the Lockout Relay -K101_Trip HVCB: Trip. Check the Lockout Relay -K102_Trip GCB: Trip. Check the Lockout Relay -K103_Trip LVCB: Trip. Check the Lockout Relay -K104_Trip Excitation CB: Trip. Check the Lockout Relay -K105_Trip Turbine: Trip. Check the Lockout Relay -K106_Trip Gen firefighting system: No Trip. Check the alarm 100% Stator Earth Fault Protection Trip on Automation Panel. Attach trip record of the relay. Reset the alarms and trip.
Execution OU
VHH
Executed by
Checked by
Approved by
Name
Sign
Name
Sign
Name
Sign
K. Herrera
KeHe
Th. König
ThKn
St. Herold
StHe
27/43
Date 2018-02-02
Tarbela 4th Extension HP Rev.
VOITH Document No.
Commissioning Instruction
版本
2AEP02-0000-02296008
Generator [U16]
1
Project Document No.
Electrical Protection
TAR4-600F-9493-00 9.4. 95% STATOR EARTH FAULT (64S) PROTECTION -F311 In the Panel +16CHA11 Deactivate 100% SEF by pressing Pushbutton -S314. In the -F311 Protection, Change Temporary the setting: 3C.10
64S LF Injection: from
“Enabled”
to
“Disabled”
3B.50
VN>5 Status: from
“Disabled”
to
“Enabled”
Close the UAT Circuit Breaker. Close the HV Circuit Breaker, =B19-Q1 and =B19-Q3 Unit to nominal speed. Close the excitation breaker with zero voltage. Close the Generator Circuit Breaker, =16BAA20.GS100. Increase slowly the generator voltage until 5%Vn (trip V0 ≅ 850V, t=1.0s
trip).
Check the Lockout Relay -K101_Trip HVCB: Trip. Check the Lockout Relay -K102_Trip GCB: Trip. Check the Lockout Relay -K103_Trip LVCB: Trip. Check the Lockout Relay -K104_Trip Excitation CB: Trip. Check the Lockout Relay -K105_Trip Turbine: Trip. Check the Lockout Relay -K106_Trip Gen firefighting system: No Trip. Check the alarm 95% Stator Earth Fault Protection Trip on Automation Panel. Attach trip record of the relay. Reset the alarms and trip. Remove 10mm2 wire between phase “RED” and ground in the Generator side.
Execution OU
VHH
Executed by
Checked by
Approved by
Name
Sign
Name
Sign
Name
Sign
K. Herrera
KeHe
Th. König
ThKn
St. Herold
StHe
28/43
Date 2018-02-02
Tarbela 4th Extension HP Rev.
VOITH Document No.
Commissioning Instruction
版本
2AEP02-0000-02296008
Generator [U16]
1
Project Document No.
Electrical Protection
TAR4-600F-9493-00 9.5. 100% STATOR EARTH FAULT (64S) PROTECTION -F311 AT NEUTRAL SIDE Generator Stopped. Install one 10mm2 wire between generator neutral point and ground. Close the UAT Circuit Breaker. Close the HV Circuit Breaker, =B19-Q1 and =B19-Q3 Unit to nominal speed. Close the excitation breaker with zero voltage. Unit to nominal speed. Close the Generator Circuit Breaker, =16BAA20.GS100. In the -F311 Protection, Change Temporary the setting: 3C.10
64S LF Injection: from
“Disabled”
to
“Enabled”
In the Panel +16CHA11 Activate 100% SEF by pressing Pushbutton -S314. 100% SEF trip (R2<2000 Ohm, t=1.0s
trip).
Check the Lockout Relay -K101_Trip HVCB: Trip. Check the Lockout Relay -K102_Trip GCB: Trip. Check the Lockout Relay -K103_Trip LVCB: Trip. Check the Lockout Relay -K104_Trip Excitation CB: Trip. Check the Lockout Relay -K105_Trip Turbine: Trip. Check the Lockout Relay -K106_Trip Gen firefighting system: No Trip. Check the alarm 100% Stator Earth Fault Protection Trip on Automation Panel. Attach trip record of the relay. Reset the alarms and trip. Remove 10mm2 wire between neutral and ground in the generator earthing compartment.
Execution OU
VHH
Executed by
Checked by
Approved by
Name
Sign
Name
Sign
Name
Sign
K. Herrera
KeHe
Th. König
ThKn
St. Herold
StHe
29/43
Date 2018-02-02
Tarbela 4th Extension HP Rev.
VOITH Document No.
Commissioning Instruction
版本
2AEP02-0000-02296008
Generator [U16]
1
Project Document No.
Electrical Protection
TAR4-600F-9493-00 9.6. CHECKING VOLTAGE CIRCUIT (∼ 20% Un)
GSU Transformer disconnected from the 500kV Switchyard. ( =B19+Q10 are open position). Excitation system connected to temporarily auxiliary feed. Disconnecting E/S GS620, GS610 are in open position. Disconnecting E/S GS610 in Closed position. Generator Disconnecting GS210 in open position. GCB GS100 in remote and available for operation. Excitation breaker in OFF position. Generator Stopped. Unit to nominal speed. Close the excitation breaker. Increase slowly the generator voltage at 20% of Un ≅ 3900 V. Check all voltage circuits record the values.
VERIFICATIONS TESTS – CE231/232/233 (TP4) MEASURED VALUES Core 1a-1n PHASE
Core 2a-2n
+16CHA11 -F311 / P345 Gen. Protection Main
+16CHA12 -F312 / P342 Gen. Protection Main
Core da-dn
+17MKC10 (Excitation)
Result
+16BAA20 -Spare
(Pass/Fail)
Red
V
V
TX0: 10-34
V TX80: 01-02
V
PASS
Yellow
V
V
TX0: 11-34
V TX80: 03-04
V
PASS
Blue
V
V
TX0: 12-34
V TX80: 05-06
V
PASS
VN
V
V
TX83: 01-02
V
PASS
Ph Seq
ACB
Execution OU
VHH
N/A
ACB
Executed by
ABC
Checked by
ACB
Approved by
Name
Sign
Name
Sign
Name
Sign
K. Herrera
KeHe
Th. König
ThKn
St. Herold
StHe
30/43
PASS
Date 2018-02-02
Tarbela 4th Extension HP Rev.
VOITH Document No.
Commissioning Instruction
版本
2AEP02-0000-02296008
Generator [U16]
1
Project Document No.
Electrical Protection
TAR4-600F-9493-00 VERIFICATIONS TESTS – CE241/242/243 (TP5) MEASURED VALUES Core 1a-1n +16CRA11 Synchronization Panel -K7 (Synchronizer) -K8 (Synchrocheck)
PHASE Terminal
Red
-X50:2L1
V
Yellow
-X50:2L2
V
N/A
Blue
-X50:2L3
V
Ph Seq
V
ACB
Result (Pass/Fail)
-X10:1
V
V
PASS
N/A
-X10:4
V
V
PASS
N/A
N/A
-X10:7
V
V
PASS
N/A
N/A
VAB:
V
+16CFA01 Metering Panel Terminal -P1
VAB:
PASS
ABC
VERIFICATIONS TESTS – CE241/242/243 (TP5) MEASURED VALUES Core 2a-2n +17MKC10 (Excitation)
PHASE
Core da-dn +17MEY11 (Governor)
+16BAA20 -Spare
Result (Pass/Fail)
Red
-X0:1-33
V
-X53:1
V
TX80:31:32
V
PASS
Yellow
-X0:2-33
V
-X53:2
V
TX80:33:34
V
PASS
Blue
-X0:3-33
V
TX80:35:36
V
PASS
ACB
TX83:31:32
V
PASS
Ph Seq
Execution OU
VHH
Executed by
Checked by
Approved by
Name
Sign
Name
Sign
Name
Sign
K. Herrera
KeHe
Th. König
ThKn
St. Herold
StHe
31/43
Date 2018-02-02
Tarbela 4th Extension HP Rev.
VOITH Document No.
Commissioning Instruction
版本
2AEP02-0000-02296008
Generator [U16]
1
Project Document No.
Electrical Protection
TAR4-600F-9493-00 9.7. OVERVOLTAGE (59) PROTECTION TEST -F311 / -F312 Temporary Change the setting V>115%Un at 60%U ≅ 10800V, t=2.9s. Temporary Change the setting V>>130%Un at 70%U ≅ 12600V, t=0.1s. Close the UAT Circuit Breaker. Close the HV Circuit Breaker, =B19-Q1 and =B19-Q3 Unit to nominal speed. Close the excitation breaker with zero voltage. Close the Generator Circuit Breaker, =16BAA20.GS100. Increase slowly the generator voltage until alarm stage, 60%Un ≅ 10800V, t=2.9s Check the alarm Over Voltage Alarm on Automation Panel. Increase slowly the generator voltage at until trip stage, 70%Un ≅ 12600V, t=0.1s Check the Lockout Relay -K101/-K201_Trip HVCB: No Trip. Check the Lockout Relay -K102/-K202_Trip GCB: Trip. Check the Lockout Relay -K103/-K203_Trip LVCB: Trip. Check the Lockout Relay -K104/-K204_Trip Excitation CB: Trip. Check the Lockout Relay -K105/-K205_Trip Turbine: Trip. Check the Lockout Relay -K106/-K206_Trip Gen firefighting system: No Trip. Check the alarm Overvoltage Protection Trip on Automation Panel. Attach trip record of the relay. Reset the alarms and trip. Put back the normal setting the protections -F311/-F312. The setting V>60%Un at 115% U = 20780V, t=2.9s. The setting V>>65%Un at 130% U = 23400V, t=0.1s.
Execution OU
VHH
Executed by
Checked by
Approved by
Name
Sign
Name
Sign
Name
Sign
K. Herrera
KeHe
Th. König
ThKn
St. Herold
StHe
32/43
Date 2018-02-02
Tarbela 4th Extension HP Rev.
VOITH Document No.
Commissioning Instruction
版本
2AEP02-0000-02296008
Generator [U16]
1
Project Document No.
Electrical Protection
TAR4-600F-9493-00 9.8. CHECKING VOLTAGE CIRCUIT (100% Un) Unit to nominal speed. Close the excitation breaker. Increase slowly the generator voltage at 100% of Un ≅ 18000 V. Check all voltage circuits, phase rotation and record the values.
VERIFICATIONS TESTS – CE231/232/233 (TP4) MEASURED VALUES Core 1a-1n Core 2a-2n PHASE
+16CHA11 -F311 / P345 Gen. Protection Main
+16CHA12 -F312 / P342 Gen. Protection Main
V V V V
Red Yellow Blue VN Ph Seq
V V V V
ACB
Core da-dn
+17MKC10 (Excitation)
(Pass/Fail)
V TX80: 01-02 V TX80: 03-04 V TX80: 05-06
TX0: 10-34 TX0: 11-34 TX0: 12-34 N/A
ACB
Result
+16BAA20 -Spare
V V V V
TX83: 01-02
ABC
ACB
PASS PASS PASS PASS PASS
VERIFICATIONS TESTS – CE241/242/243 (TP5) MEASURED VALUES Core 1a-1n +16CRA11 Synchronization Panel
PHASE Terminal
Red
-X50:2L1
Yellow
-X50:2L2
Blue
-X50:2L3
Ph Seq
-K7 (Synchronizer)
V V V
V
VAB:
ACB
+16CFA01 Metering Panel -K8 (Synchro check)
V
VAB: N/A
-X10:4
N/A
N/A
-X10:7
N/A
N/A
+17MKC10 (Excitation)
Red
-X0:1-33
Yellow
-X0:2-33
Blue
-X0:3-33
Ph Seq
V V V
Core da-dn +16BAA20 -Spare
V V
-X53:2
TX80:31:32 TX80:33:34 TX80:35:36
ACB
Execution OU
VHH
TX83:31:32
Executed by
V PASS V PASS V PASS
ABC
+17MEY11 (Governor) -X53:1
-P1
V V V
-X10:1
N/A
VERIFICATIONS TESTS – CE241/242/243 (TP5) MEASURED VALUES Core 2a-2n PHASE
Terminal
Checked by
V V V V
Approved by
Name
Sign
Name
Sign
Name
Sign
K. Herrera
KeHe
Th. König
ThKn
St. Herold
StHe
33/43
Result (Pass/Fail)
Result (Pass/Fail)
PASS PASS PASS PASS Date 2018-02-02
Tarbela 4th Extension HP Rev.
VOITH Document No.
Commissioning Instruction
版本
2AEP02-0000-02296008
Generator [U16]
1
Project Document No.
Electrical Protection
TAR4-600F-9493-00 9.9. OVERFREQUENCY (81O) PROTECTION TEST -F311 / -F312 Close the UAT Circuit Breaker. Close the HV Circuit Breaker, =B19-Q1 and =B19-Q3 Unit to nominal speed. Close the excitation breaker with zero voltage. Close the Generator Circuit Breaker, =16BAA20.GS100. Increase the generator voltage up to 100%Un = 18000V Increase the generator frequency at until alarm stage, 51.6Hz, t=2s. Check the alarm Overfrequency Alarm on Automation Panel. Increase the generator frequency at until trip stage 52.5Hz, t=0.1s Check the Lockout Relay -K101 / -K201_Trip HVCB: No Trip. Check the Lockout Relay -K102 / -K202_Trip GCB: Trip. Check the Lockout Relay -K103 / -K203_Trip LVCB: No Trip. Check the Lockout Relay -K104 / -K204_Trip Excitation CB: No Trip. Check the Lockout Relay -K105 / -K205_Trip Turbine: No Trip. Check the Lockout Relay -K106_Trip Gen firefighting system: No Trip. Check the alarm Overfrequency Protection Trip on Automation Panel. Attach trip record of the relay. Reset the alarms and trip.
Execution OU
VHH
Executed by
Checked by
Approved by
Name
Sign
Name
Sign
Name
Sign
K. Herrera
KeHe
Th. König
ThKn
St. Herold
StHe
34/43
Date 2018-02-02
Tarbela 4th Extension HP Rev.
VOITH Document No.
Commissioning Instruction
版本
2AEP02-0000-02296008
Generator [U16]
1
Project Document No.
Electrical Protection
TAR4-600F-9493-00 9.10. UNDERFREQUENCY (81U) PROTECTION TEST -F311 / -F312 Close the UAT Circuit Breaker. Close the HV Circuit Breaker, =B19-Q1 and =B19-Q3 Unit to nominal speed. Close the excitation breaker with zero voltage. Close the Generator Circuit Breaker, =16BAA20.GS100. Increase the generator voltage up to 100%Un = 18000V Decrease the generator frequency at until alarm stage, 47.5Hz, t=2s. Check the alarm Underfrequency Alarm on Automation Panel. Decrease the generator frequency at until trip stage 46.5Hz, t=0.1s Check the Lockout Relay -K101_Trip HVCB: Trip. Check the Lockout Relay -K102_Trip GCB: Trip. Check the Lockout Relay -K103_Trip LVCB: Trip. Check the Lockout Relay -K104_Trip Excitation CB: Trip. Check the Lockout Relay -K105_Trip Turbine: Trip. Check the Lockout Relay -K106_Trip Gen firefighting system: No Trip. Check the alarm Underfrequency Protection Trip on Automation Panel. Attach trip record of the relay. Reset the alarms and trip.
Execution OU
VHH
Executed by
Checked by
Approved by
Name
Sign
Name
Sign
Name
Sign
K. Herrera
KeHe
Th. König
ThKn
St. Herold
StHe
35/43
Date 2018-02-02
Tarbela 4th Extension HP Rev.
VOITH Document No.
Commissioning Instruction
版本
2AEP02-0000-02296008
Generator [U16]
1
Project Document No.
Electrical Protection
TAR4-600F-9493-00 9.11. UNDERVOLTAGE (27) PROTECTION TEST -F311 / -F312 Close the UAT Circuit Breaker. Close the HV Circuit Breaker, =B19-Q1 and =B19-Q3 Unit to nominal speed. Close the excitation breaker with zero voltage. Increase the generator voltage up to 100%Un = 18000V Close the Generator Circuit Breaker, =16BAA20.GS100. Decrease slowly the generator voltage at until alarm stage, 15380V, t=3s. Check the alarm Undervoltaje Alarm on Automation Panel. Decrease slowly the generator voltage at until trip stage 13580, t=0.1s Check the Lockout Relay -K101_Trip HVCB: No Trip. Check the Lockout Relay -K102_Trip GCB: Trip. Check the Lockout Relay -K103_Trip LVCB: No Trip. Check the Lockout Relay -K104_Trip Excitation CB: Trip. Check the Lockout Relay -K105_Trip Turbine: Trip. Check the Lockout Relay -K106_Trip Gen firefighting system: No Trip. Check the alarm Underfrequency Protection Trip on Automation Panel. Attach trip record of the relay. Reset the alarms and trip.
9.12. END OF FUNCTIONAL OPEN CIRCUIT TESTTING - GENERATOR PROTECTION End of testing voltage dependent protection relays of generator. In the -F311 & -F312 Protection, Change Temporary the setting: -F311: 3D.10
V/Hz>1 Status:
from
“Enabled”
to
“Disabled”
-F312: 3D.10
V/Hz>1 Status:
from
“Enabled”
to
“Disabled”
Protection is ready for open circuit generator characteristic test. After circuit generator characteristic test, put back the normal setting of the protections: -F311: 3D.10
V/Hz>1 Status:
from
“Disabled”
to
“Enabled”
-F312: 3D.10
V/Hz>1 Status:
from
“Disabled”
to
“Enabled”
Execution OU
VHH
Executed by
Checked by
Approved by
Name
Sign
Name
Sign
Name
Sign
K. Herrera
KeHe
Th. König
ThKn
St. Herold
StHe
36/43
Date 2018-02-02
Tarbela 4th Extension HP Rev.
VOITH Document No.
Commissioning Instruction
版本
2AEP02-0000-02296008
Generator [U16]
1
Project Document No.
Electrical Protection
TAR4-600F-9493-00
10. ANNEX
Execution OU
VHH
Executed by
Checked by
Approved by
Name
Sign
Name
Sign
Name
Sign
K. Herrera
KeHe
Th. König
ThKn
St. Herold
StHe
37/43
Date 2018-02-02
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