P544 (87LB 21BU 50BU) Test Report Rev 3

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Site Acceptance Test Report MiCOM P544 87LB / 21BU / 50BU

P544

Bay Ref: Substation: REVISION PAGES 2 3 2 X

SUMMARY 1

PURPOSE OF TESTS

2

REFERENCE DOCUMENT

2

X

3

SCOPE

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4

RELAY TERMINLOGY

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5

TEST EQUIPMENT

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6

PRE-REQUISTES

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7

PROCEDURES

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11

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8

RECORD TEST SHEET 8.1 RELAY INFORMATION 8.2 CT & VT DATA: 8.3 PRODUCT CHECKS 8.4 MEASURMENT VALUE TEST: 8.5 DIFFERENTIAL PROTECTION: 8.6 DISTANCE PROTECTION: 8.7 67N DEF FUNCTION:

X

8.8 VT SUPERVISION FUNCTION:

X

8.9 OVER CURRENT PROTECTION 8.10

BINARY INPUT TEST :

8.11

BINARY OUTPUT TEST:

8.12

FIXED LED INDICATIONS TEST:

8.13

LED INDICATIONS TEST: ( LEFT SIDE LED)

8.14

FN KEY LED INDICATIONS TEST (RIGHT SIDE LED)

8.15

GOOSE CHANNEL TEST

8.16

FINAL CHECK AREVA T&D

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1 PURPOSE OF TESTS The purpose of the tests is to check the full functionality of the protection relay. 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. This procedure does not intend to check all tripping matrix and PSL logic tests, This, when applicable, is described into a separate document, dedicated to the specific substation and feeder type. 2 REFERENCE DOCUMENTS DOCUMENT REFERENCE

DOCUMENT

VERSION/ DATE

REMARKS

Protection Line Diagram Schematic Drawing Service Manual Operation Manual Protection Relay Coordination Principles Relay setting Calculation PSL logic Connections LED Display Configuration

3 SCOPE Substation Name :Diameter: Bay : Panel Number : Relay Denomination in Scheme

87LB/21BU/50BU

Scheme to be Checked

Relay Functionality Test.

4 TERMINOLOGY AREVA T&D

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P544 Code ( ANSI) 87LB 21BU 50BU

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Terminology Line Differential Protection Back Up Distance Protection Back Up Over Current Protection

5 TEST EQUIPMENT USED Sl No 1.

Description

Make

Equipment Sl No.

Calibration date

2.

Secondary Injection Kit Multimeter

3.

Laptop

NA

Setting software

Type : MICOM S1 Studio Version : 2.14

Calibration due date

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..)

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7. TEST PROCEDURES The following procedures are written for demonstrating the main protection functions of the P544 relay using an Omicron test set or similar. The tests do not test the boundaries of all available function characteristics. They do test that the function is operating at a point on one chosen characteristic. This document is to be referred to when performing commissioning tests in association with the commissioning section of the service manual. NOTE : All the Test are performed in the Test Switch. Omicron CMC156 Test Equipment or Any Equivalent To Be Used .

. 7.1. Differential Function Tests :( Ref Record Test Sheet 8.5) To perform this test the relay should be set on Test loop back mode - Enabled in Commission Tests Setting. 7.1.1 Pick Up and Time measurement Test : ( Ref 8.5.1) 

Inject current on Phase A starting from 0.001 A to until the relays trip on Phase A Differential. Record the values in the test sheet. The same Steps will be repeated for other Phases.



Inject 2 X I Pickup in Phase A and Measure the Operating time of the Relay. Note down readings. The same Steps will be repeated for other Phases.

7.1.1 Lower Bias Slope Tests ( Ref 8.5.2) Objective: To check operation on the lower bias slope of the current differential characteristic. Relay Settings:  Initial Settings plus enable phase differential protection in the configuration section of the menu. Method:  Inject current of 1A is injected into the A phase which is used as the bias current. The relay will trip and any contacts associated with the A-phase will operate, but ignore them for the moment. 

Inject another small current into the B phase which is used as differential current. Ia is always greater than Ib. Slowly increase the current in the B phase until Phase B trips. Record the phase B current magnitude. Switch OFF the ac supply, read and clear all alarms.

Pass Criteria: AREVA T&D

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The current magnitude at which B phase element operates should be 0.25 amp +/- 10%. (Assumption: Is1 = 0.2pu, k1 = 30%, Is2 = 2.0pu. It is noted that B phase operate current is 0.5 x (Is1 + 1.5k1) pu +/10% ) 7.1.2

Upper Bias Slope Tests (Ref 8.5.3)

Objective: To check operation on the upper bias slope of the current differential characteristic. Relay Settings:  Initial Settings plus enable phase differential protection in the configuration section of the menu. Method:  Repeat the test in 7.1.1 with the bias current set in the A-phase to be 3pu. 

Slowly increase the current in the B phase until phase B trips (bit 2 of [0F04: Test Port Status] is set to 1). Record the phase B current magnitude and check that it corresponds to the information below.



Switch OFF the ac supply and reset the alarms.



Note that the duration of current injections should be short to avoid overheating of the injection test set and Relay

Pass Criteria: The current magnitude at which B phase element operates should be 1.15 amp +/- 20%. Assumption: Is1 = 0.2pu, k2 = 150%, Is2 = 2.0pu. It is noted that B phase Operate current is 0.5 x [(3 x k2) – {(k2 – k1) x Is2 } + Is1] pu +/- 20% 7.1.3

Communication Fail Tests (Ref 8.5.4)

Objective: To check operation of the relay in case of Fiber Com error. Noting that tow communication channels are used with the P544. Method Inject 1 A current, then record the operation of the relay. Relay should operate as follows: 

When Both channels are health IN, => the relay operates with diff trip only.



When one channel is OUT => the relay operates with diff trip only.



When both the two channels are OUT => the relay operates with dist trip, and give Comm. Fail Alarm. AREVA T&D

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7.2 Distance protection Function tests 7.21. Line Angle Reach Tests ( Ref 8.6.1) Objective: To check the line angle reach of all zones for selected fault types. Relay Settings: Final Settings plus enable distance protection in the configuration section of the menu. Method: ( Z1 will be enabled only if communication is failed. To test Z1 the relay should be communication failed)  Apply AN,BN,CN, AB, BC, CA,ABC faults at the relay line angle to find the Z1, Z2, Z3 reach pick up. 

Use the reach test facility in Omicron Test Universe Advance Distance module or Equal test module in other Test Kits

Pass Criteria: Reach should be within +/- 5% on line angle fault and +/- 10 % on off line angle fault. 7.2.2

Resistive Reach Tests

Objective: To check the resistive reach along the resistive axis for all zones for phase to ground fault types. Relay Settings: Final Settings plus enable distance protection in the configuration section of the menu. Method:  Apply AN,BN,CN, AB, BC, CA,ABC faults at the relay line angle to find the Z1, Z2, Z3 reach pick up. 

Use the reach test facility in Omicron Test Universe Advance Distance module or Equal test module in other Test Kits

Pass Criteria: The reach should be within 10% of the setting.

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Zone timing tests

Objective: To check the operation times for each zone on selected fault types. Method:  For zone 1 timing apply AN fault at 50% of the Zone 1 reach, for zone 2 apply a CN fault at zone 1 plus 50% Zone 2 minus zone 1 reach, for zone 3 apply a AB fault at zone 2 plus 50% Zone 3 minus zone 2 reach, for zone 4 apply a BC fault at 50% zone 4 reach. 

Use the reach test facility in Omicron Test Universe Advance Distance module or Equal test module in other Test Kits

Pass Criteria: The operation times should be within 1 to 2 cycles for zone 1 and 5% of the set time for the other zones. 7.2.4

Fault Locator :

Objective: To verify the correct operation of Fault Locator.. Method:  Apply fault at 100 %,75%,50% and 25 % of AN,BN,CN,AB,BC,CA,ABC and record the values. 

Use the reach test facility in Omicron Test Universe Advance Distance module or Equal test module in other Test Kits

Pass Criteria: Fault Location + or – 2 % of line Length(Solid fault applied on line) 7.3 DIRECTIONAL EF PROTECTION ( DEF ) ( Ref 8.7) 7.3.1 Forward DEF element test: ( Ref 8.7.1)  Apply 3phase volts healthy voltage ( 2 sec ) , inject only one phase current for this test to the phase under test and reduce voltage of phase under test. Until Vo=Vn/3=(Va+Vb+Vc) is greater than setting.  With angle of 0 degree between voltage and current , Increase the current in 0.001In steps, pausing for 1s between each step, until the relay operates on Forward. The current must then be reduced in the same manner until the protection resets. 7.3.2 Reverse DEF element test: ( Ref 8.7.2) AREVA T&D

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Apply 3phase volts healthy voltage ( 2 sec ) , inject only one phase current for this test to the phase under test and reduce voltage of phase under test. Until Vo=Vn/3=(Va+Vb+Vc) is greater than setting. With angle of 180 degree between voltage and current, Increase the current in 0.001In steps, pausing for 1s between each step, until the relay operates on Reverse. The current must then be reduced in the same manner until the protection resets.

7.3.3 Polarizing Voltage Test( Ref 8.7.3)  Apply 3phase volts healthy voltage ( 2 sec ) , inject only one phase current with value higher than setting ( 1 A).  With angle of 0 degree between voltage and current, 0.01Vn steps, pausing for 1s between each step, . The calculate Vo=Vn/3=(Va+Vb+Vc) The Voltage must then be Increased in the same manner until the protection resets. 7.3.4 Directional Angle Test: ( Ref 8.7.4)   

Apply 3phase volts healthy voltage ( 2 sec ) ,then inject only one phase current with value higher than setting ( 1 A)and Decrease voltage until the relay operates, with angle 180 between voltage & current. Change the angle in step of 1 degree pausing for 1s between each step ,between voltage and current until relay operates on Forward ,The angle must then be decreased in the same manner until the Forward protection resets. For reverse direction test , do the same noting Reverse operation.

7.3.5 DEF scheme Test: ( Ref 8.7.5)    

Apply 3phase volts healthy voltage ( 2 sec ) ,then apply fault ( inject only one phase current with value higher than setting ( 1 A)and and decrease one voltage to make VN below the setting). Check for DEF signal send when Forward DEF operates. Check for DEF signal NOT send when Forward DEF operates. Activate the receive signal and check the time with DEF receive and without receive.

7.4 VT supervision Method: AREVA T&D

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Enable the Voltage Transformer Supervision. Apply three phase nominal voltages (63.5V per phase) and currents (1A per phase) to the relay. After 5s simulate a fuse failure condition on Phase A by reducing the voltage of 0.01 V step by step till VT failure Appears. Record the Values on test sheet. (VT fail Pick up).The same Step by Step increase the Voltage till VT fail Disappears. Record the Values on test sheet.(VT fail Reset).the same steps will be repeated for AN,BN,CN and ABC.

7.5 Non-directional over current protection 7.5.1 Over current sensitivity tests ( Object: To verify that the relay overcurrent elements operate at the set thresholds. Settings: Function IEC S Inverse TMS 1.0 Directionality Non-directional Reset time delay 0s Is In Method: Enable stage 1 overcurrent (I>1) and disable other overcurrent elements. Inject current of 0.95In into the A phase input. Increase the current in 0.001In steps, pausing for 5s between each step, until the relay operates. The current must then be reduced in the same manner until the protection resets. Pass Criteria For the relay to pass it shall operate as detailed below. Pick-up should occur at 1.05Is +/-5%. Reset should occur at 0.95Is +/-5%. 7.5.2 Overcurrent characteristic tests Object: To verify that the relay overcurrent elements trip in the correct time. Settings: Function DT / IEC S Inverse TMS 1.0 Time Delay 1s Directionality Non-directional Reset time delay 0s Is In Method: Enable stage 1 over current (I>1) and disable other over current elements. Prepare the tests set so that A phase current can be instantaneously applied at 2In and 10In respectively. Measure the operating times of the relay start and trip contacts. Repeat the test with the element set to IEC S inverse (IDMT). Repeat the test with the element disabled and verify that no start or trip elements operate. Use can be made of the QuickCMC Omicron feature. AREVA T&D

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PASS CRITERIA For the relay to pass it shall operate as detailed below. DT operating time 1.0s +/-2%, IDMT operating time 10.029s +/-5% at 2In and 2.971s +/-5% at 10In. 7.6 Testing of Binary Inputs : Apply nominal Voltage on respective Relay terminal and Check the Healthiness of Binary Inputs in the System Manu – Relay input status. ( 0 or 1 ) Note : if the BI is used in the scheme the BI will be tested along with scheme. Caution : please make sure of Nominal voltage and Polarity of Terminal before apply the voltage to relay. 7.7 Testing of Binary Output’s : This test checks that all the output relays are functioning correctly. Ensure that the relay is made in test mode by viewing cell [0F0D: COMMISSION TESTS, Test Mode] to ensure that it is set to ‘Blocked’.The output relays should be energized one at a time. To select output relay 1 for testing, set cell [0F0E: COMMISSION TESTS, Test Pattern] as appropriate.Connect a continuity tester across the terminals corresponding to output relay 1 as given in external connection diagram (P54x/EN IN).To operate the output relay set cell [0F0F: COMMISSION TESTS, Contact Test] to ‘Apply Test’. Operation will be confirmed by the continuity tester operating for a normally open Contact and ceasing to operate for a normally closed contact. Measure the resistance of the contacts in the closed state.Reset the output relay by setting cell [0F0F: COMMISSION TESTS, Contact Test] to‘Remove Test’.Repeat the test for the remaining relays.Return the relay to service by setting cell [0F0D: COMMISSION TESTS, Test Mode] to‘Disabled’. Note : If the Outputs are assigned for function this will be tested along with Functional test of relays.

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8. RECORD TEST SHEET 8.1 RELAY INFORMATION Type No.:

P544

Designation : Nominal Current :

Model No : Serial Number Firmware Version :

Nominal Voltage` : Aux. Volts :

8.2 CT & VT DATA: CT rated primary current set as CT rated secondary current set as Ignd-CT rated primary current set as Ignd-CT rated secondary current set as Rated primary voltage (L-L) set as Rated secondary voltage (L-L) set as 8.3 PRODUCT CHECKS Relay damaged? Rating information correct for installation? Case earth installed? External wiring checked against diagram? Test block connections checked? Measured auxiliary supply Value measured between terminals 8 and 9 LCD front panel display Clock set to local time? Time maintained when aux. supply removed? 8.4 MEASURMENT VALUE TEST: 8.4.1 Current Measurement Phase injected

Current injected (Amps)

V dc V dc

Secondary Current read on relay display (A)

Primary Current read on relay display (A)

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P544 PH-N

IR

L1-E

1.0

L2-E

1.0

0

L3-E

1.0

0

L1-L2-L3

1.0

IY

IB

0

0

Bay Ref: Substation: IN

IR

0

IY

IB

0

0

0

0

0

IN

0 0

0

0

8.4.2Voltage Measurement Phase injected

Voltage applied (Volts) PH-N

Primary Voltage read on relay display in kV VR

L1-E

63.5

L2-E

63.5

0

L3-E

63.5

0

L1-L2-L3

63.5

VY

VB

0

0

V_RY

V_YB

V_BR

0

-

0

0

0

VN

0

-

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8.5 DIFFERENTIAL PROTECTION: 8.5.1 Pickup Test Settings : Item

Description

1

IS1

2

Is2

3

K1

4

K2

5

T

Setting

Expected : I I Diff I > ( k1 * I I Bias I + Is1 )/2 =

R-E

Expected Trip Time in m-sec