P740 BB Protection Test Report Rev 1
Short Description
PROTECTION...
Description
Gulf Cooperation Council Interconnection Authority GCCIA Engineer
GCC Interconnection Project - Phase I
TRANSMISSION & DISTRIBUTION Site Acceptance Test Report Bay Ref: LOW IMPEDANCE BB PROETCTION Substation:
P740
REVISION PAGE 0 1
SUMMARY 1
PURPOSE OF TESTS
2
X
2
REFERENCE DOCUMENT
2
X
3
SCOPE
2
X
4
RELAY TERMINLOGY
2
X
5
TEST EQUIPMENT
3
X
6
PRE-REQUISTES
3
X
7
PROCEDURES
3
X
8
RECORD TEST SHEET
6
X
8.1 TOPOLOGY 8.2 BB PROTECTION DETAILS 8.3 RELAY ASSIGNMENTS 8.4 SYSTEM DATA 8.5 SETTINGS 8.6
CT PARAMETER
8.7
BB PROTECTION TEST
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Gulf Cooperation Council Interconnection Authority GCCIA Engineer
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TRANSMISSION & DISTRIBUTION Site Acceptance Test Report Bay Ref: LOW IMPEDANCE BB PROETCTION Substation:
P740
1 PURPOSE OF TESTS The purpose of the tests is to check the full functionality of the protection relay and the complete scheme related. This procedure does not intend to check that all alarms and trips are correctly sent to the DCS or SCADA level. This part is already developed into dedicated DCS or SCADA Commissioning procedures. 2 REFERENCE DOCUMENTS DOCUMENT
DOCUMENT REFERENCE
VERSION/ DATE
REMARKS
Protection Line Diagram Schematic Drawing Service Manual Operation Manual 3 SCOPE Substation Name :Diameter: Bay : Panel Number : Relay Denomination in Scheme Scheme to be Checked 4 TERMINOLOGY Code ( ANSI) 87B1
Terminology Low Impedance Busbar Protection
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Gulf Cooperation Council Interconnection Authority GCCIA Engineer
GCC Interconnection Project - Phase I
P740
TRANSMISSION & DISTRIBUTION Site Acceptance Test Report Bay Ref: LOW IMPEDANCE BB PROETCTION Substation:
5 TEST EQUIPMENT USED Sl No 1.
Description
2.
Secondary Injection Kit Multimeter
3.
Laptop
Make
Equipment Sl No.
Calibration date
Calibration due date
NA
6. PRE - REQUISITES PRE-REQUISITES
REMARKS
All Safety Condition Are Ok All Competent Personnel Available For The Test AC & DC Supply Availability And Security PPE Safety Available. All Other Relevant Safety Instructions Been Followed Coordination With Other Parties ( GIS, Transformer, Etc..) 7. TEST PROCEDURES The following procedures are written for demonstrating the main protection functions of the P740 relay using an Omicron test set or similar. This document is to be referred to when performing commissioning tests in association with the commissioning section of the service manual. 7.1 ID>1 threshold (circuitry fault current) : The ID>1 threshold is a CU’s parameter, this setting is : ID>1 = A tID>1 = s For simplify the test put K ID>1
= 0%
For the search of the current threshold the ID>1 alarm timer is set at the minimum value (100 ms).With the OMICRON CMC 156, applied a current on I1 of each PU and increase the current by step of 0,01 A until appear the circuitry fault alarm. (Output relay 3 of CU “circuitry fault”) Repeat this sequence for the phase I2 and I3. AREVA T&D
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P740
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The ID>1 alarm timer is checked for each PU after the measurement of the current threshold, the setting of the ID>1 alarm timer is set at the original value. (5 Sec) The time delay is measured for a differential current upper than ID>1,the start of the clock is when the current is applied and the stop of the clock is when the circuitry fault alarm appeared. 7.2 ID>2 threshold (tripping current): The ID>2 threshold is a CU’s parameter, this setting is : ID>2 = IDCZ>2 = K2 = KCZ = The tripping time is less of one cycle ( 2 = IDCZ>2 K1 ID>1 Ibias = A
I Bias
The trip appears in the colored area. Methodology of 2 current on bus : With Omicron box put : AREVA T&D
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TRANSMISSION & DISTRIBUTION Site Acceptance Test Report Bay Ref: LOW IMPEDANCE BB PROETCTION Substation:
P740
I1 => on phase I1 of one PU I2 => on phase I1 of another PU 1. Fixed a bias current > Ibias0 2. Increase the differential current until the busbar trip, by 2 opposite ramps of current on I1 and I2 with the same speed so that the bias current is always constant. The trip of the busbar differential protection appeared when the two conditions are respected : 1. Idiff > ( K2 * Ibias = KCZ * Ibais ) 2. Idiff > ( ID>2 = IDCZ>2 ) IDCZ>2
ID>2 Ibias =
=
K2
KCZ
3. Idiff > K x Ibias 4. Idiff > Id>2 I Bias = I1 + I 2 I Diff = I1 – I 2 Slope K = I Diff operated / I Bias 7.4 Dead Zone threshold and Timing Test : The I>DZ threshold is a PU’s parameter, this setting is : I> DZ DZ Time
= =
With the OMICRON CMC 156, applied a current on I1 of each PU and increase the current by step of 0,01 A until the trip of the PU (output relay N° 1, 2 or 3). The CMC 156 is programmed to stop when the tripping relay switch on.Repeat this sequence for the phase I2 and I3. The tDZ timer is checked for each PU after the measurement of the current threshold, the setting of the tDZ alarm timer is set at the original value. ( Sec) The time delay is measured for a differential current upper than I>DZ,the start of the clock is when the current is applied and the stop of the clock is when the circuitry fault alarm appeared.
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TRANSMISSION & DISTRIBUTION Site Acceptance Test Report Bay Ref: LOW IMPEDANCE BB PROETCTION Substation:
P740
8.1- TOPOLOGY :-
8.2- BB Protection Details : 8.2.1- Central Unit : Quantity
1
Model Number
Serial Number
Address
Soft issue
8.2.2 Peripheral Unit : Quantity
5
Model Number
Serial Number
Address
Soft issue
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P740
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8.4
Relay Assignments :
8.41
P741 logic I/O assignment
Opto N#
1 2 3 4 5 6 7 8
P741 TERMINAL N# K1-K2 K3-K4 K5-K6 K7-K8 K9-K10 K11-K12 K13-K14 K15-K16
Assignment
Test
SPARE SPARE SPARE SPARE SPARE SPARE SPARE SPARE
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P740 Relay N#
1 2 3 4 5 6 7 8 Led N# 1 2 3 4 5 6 7 8
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P741 TERMINAL N# J1-J2 J3-J4 J5-J6 J7-J8 J9-J10 J11-J12 J13-J15 (R) J14-J15 (T) J16-J18 (R) J17-J18 (T) Color Red Yellow Green Red Yellow Green Red Yellow Green Red Yellow Green Red Yellow Green Red Yellow Green Red Yellow Green Red Yellow Green
Assignment
Test
SPARE SPARE SPARE SPARE SPARE SPARE SPARE SPARE Assignment 87BB Fault Phase A SPARE SPARE 87BB Fault Phase B SPARE SPARE 87BB Fault Phase C SPARE SPARE 87BB Trip Zone 1 SPARE SPARE Circuitry faulty Zone 1 SPARE SPARE Zone 1 Blocked Zone 1 Checked Zone 1 Protected Fiber Comm. Error Fiber Comm. Change Fiber Comm. OK SPARE SPARE SPARE
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P740
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8.3.2 P742 logic I/O assignment( P742@7,8,9,10,11) Opto N#
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Relay N# 1 2 3 4 5 6 7 8 WD
P742 terminal N# C1-C2 C3-C4 C5-C6 C7-C8 C-9C10 C11-C12 C13-C14 C15-C16 A1-A2 A3-A4 A5-A6 A7-A8 A9-A10 A11-A12 A13-A14 A15-A16 P742 terminal N# D1-D2 D3-D4 D5-D6 D7-D8 D9-D10 D11-D12 D13-D15 (R) D14-D15 (T) D16-D18 (R) D17-D18 (T) E11-E12 (R) E12-E13(T)
Assignment
Test
SPARE SPARE 50BF INT ( Ext 3 Ph Trip ) SPARE SPARE SPARE 3 ph CB Open 3 ph CB Closed SPARE SPARE SPARE SPARE SPARE SPARE SPARE SPARE Assignment
Test
BB PROTECTION TRIP SPARE SPARE SPARE SPARE SPARE SPARE SPARE
RELAY FAULTY (WATCHDOG CONTACT)
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P740
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Led N# 1 2 3 4 5 6 7 8
Assignment CB OPEN CB CLOSED CB STATUS ALARM DEAD ZONE FAULT 87BB TRIP FIBER COMM ERROR EXT CBF INITATION SPARE
8.4
System Data :
8.41
CT Data :-
feeder
8.42
TYPE
Make
Ratio
Test
Class KSCC Vk
Imag Burden
Network Data :-
Network current Independent bar Icc min Iload max Iload min I bias max (1Bar) Biggest PW
Value
Feeder name
8.5 – Settings : 8.5.1 CU setting:
Differential phase fault : Actived
KCZ IDCZ>2 K2 ID>2 ID>1
= = = = =
% A % A A AREVA T&D
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P740 K1 = ID>1 Timer =
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Differential earth fault : not actived
8.5.2. PU Setting:
Dead Zone Protection : Actived
I>DZ = I>DZ Time =
A Sec
8.6 CT parameters : Measurement of loop resistance: The CT secondary are wired like following schematic:
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P740
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PU’s
BURDEN RESISTANCE Ran
PU’s
Ratio
Rbn
Class
RBph / RBN
Rcn
Rab
Standard input
CT SECONDARY RESISTANCE RA RB RC
Rated burden
KSCC or Vk
RCT
Eff burden
Eff. burden : It’s the highest of the 3 loop resistances Rba, RBb and RBc, multiplied by 1.25 for taking into account the high temperature. RBph / RBn : It’s the ratio between the highest of the 3 loop resistances Rba, RBb and RBc and the loop resistance Rab. RCT : It’s the highest of the 3 secondary resistances of the CT.
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Gulf Cooperation Council Interconnection Authority GCCIA Engineer
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P740
TRANSMISSION & DISTRIBUTION Site Acceptance Test Report Bay Ref: LOW IMPEDANCE BB PROETCTION Substation:
Relay Characteristics:
Idiff ≥ ID>2 Idiff Idiff ≥ ≥ ID>1 IDCZ>2
Point C
8.7. BB Protection Tests : 8.7.1 Measurements : Injected secondary current = 1A PU’s
CT ratio
Idiff Idiff ≥ ≥ K2*Ibais s> ID>1 KCZ*Ibais K1*Ibais than the current ) .mer,, ,,,,, ,,,,, ,,,,, ,,,,, ,,,,, ,,,,, ,,,,, ,,,,, ,,,,, ,,,,, ,,,,, ,,,,, ,,,,, ,,,,, ,,,,, ,,,,, ,,,,, Current measured by the relay IY IB ,,,,,IR ,Point A B
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TRANSMISSION & DISTRIBUTION Site Acceptance Test Report Bay Ref: LOW IMPEDANCE BB PROETCTION Substation:
P740
8.7.2 Checking of 87BB current threshold : 8.7.2.1. ID>1 threshold (circuitry fault current) : PU’s
8.7.3
CT ratio
Time delay Sec
I3
ID>2 threshold (tripping current):
PU’s
CT ratio
8.7.3
I1
Current measured I2
I1 In A
ID>2 , IDCZ>2 and tripping time measured Trip. I2 Trip. Time I3 Trip. Time Time In A In (ms) In A In (ms) In (ms)
Slope Test :
Phase
PU@7-Q01
PU@8-Q02
CT Ratio
2000/1
2000/1
BAIS
DIFFERENTIAL
SLOPE
PH-R PH-Y PH-B
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P740
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Phase
PU@7-Q01
PU@8-Q02
CT Ratio
2000/1
2000/1
Phase
PU@7-Q02
PU@8-Q03
CT Ratio
2000/1
2000/1
Phase
PU@7-Q03
PU@8-Q04
CT Ratio
2000/1
2000/1
Phase
PU@7-Q04
PU@8-Q05
CT Ratio
2000/1
2000/1
BAIS
DIFFERENTIAL
SLOPE
BAIS
DIFFERENTIAL
SLOPE
BAIS
DIFFERENTIAL
SLOPE
BAIS
DIFFERENTIAL
SLOPE
PH-R PH-Y PH-B
PH-R PH-Y PH-B
PH-R PH-Y PH-B
PH-R PH-Y PH-B AREVA T&D
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P740
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8.7.3 Topology Test : Case 1:Circuit
PU Add.
Q01
7
Q02
8
Q03
9
Q04
10
Q05
11
CB Status
Fault Loc.
TRIP
NO TRIP
TRIP
NO TRIP
TRIP
NO TRIP
HERE
C = Close, O = Open, Y = Yes, N = No Case 2:Circuit
PU Add.
Q01
7
Q02
8
Q03
9
Q04
10
Q05
11
CB Status
Fault Loc. HERE
C = Close, O = Open, Y = Yes, N = No Case 3:Circuit
PU Add.
Q01
7
Q02
8
Q03
9
Q04
10
Q05
11
CB Status
Fault Loc.
HERE
C = Close, O = Open, Y = Yes, N = No Case 4:AREVA T&D
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P740 Circuit
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PU Add.
Q01
7
Q02
8
Q03
9
Q04
10
Q05
11
CB Status
Fault Loc.
TRIP
NO TRIP
TRIP
NO TRIP
HERE
C = Close, O = Open, Y = Yes, N = No Case 5:Circuit
PU Add.
Q01
7
Q02
8
Q03
9
Q04
10
Q05
11
CB Status
Fault Loc.
HERE
C = Close, O = Open, Y = Yes, N = No 8.7.3 Dead Zone Fault : PU’s
CT ratio
I1
Current measured I2
Time delay Sec
I3
8.8 FINAL CHECKS AREVA T&D
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P740
TRANSMISSION & DISTRIBUTION Site Acceptance Test Report Bay Ref: LOW IMPEDANCE BB PROETCTION Substation:
Item
Description
Result
1
All test equipment, leads, shorts and test block removed safely?
2
Disturbed customer wiring re-checked?
3
All commissioning tests disabled?
4
Circuit breaker operations counter reset?
5
Current counters reset?
6
Event records reset?
7
Fault records reset?
8
Disturbance records reset?
9
Alarms reset?
10
LEDs reset?
11
Secondary front cover replaced? (If applicable)
REMARKS ……………………………………………………………………………………………………………… ……………………………………………………………………………………………………………… ……………………………………………………………………………………………………… END OF REPORT
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