Test Guide Current Line Diff Nari Pcs-931

Distribution :

Controlled

X

Uncontrolled

Document status : ( Information )

F.C

( Comments )

F.E

( Execution ) X

X

TO :

F.I

F.A

Available on computer

EBWPC

( Application )

CURRENT LINE DIFFERENTIAL RELAY

Title :

NARI PCS-931

Type : FIELD TEST GUIDE

Contract : BORGOS SUBSTATION AND INTERCONNECTION WORK PROJECT

BURGOS Contract specific number

Name

by on by on by on A by Satria on 17-Jul-14 Ind Rev Prepared

Pasti Malau

Pasti Malau

7/17/2014

17-Jul-14

Checked

Approved

Customize for BURGOS PROJECT

14 Sheets

Modification

PT. ALSTOM GRID FA - SECTION

J K T

A T

I

0

8

H

D A F

0 0 0 0

Place of issue File number This document is the property of Alstom Grid - SBU ITS and cannot be used, reproduced or transmitted to thirds without prior written permission.

PT. ALSTOM GRID

Ref.

FA - Section

CURRENT LINE DIFFERENTIAL RELAY

Chapt.

NARI PCS-931

Sheet :

A T : P/87L

SUMMARY

2

Rev.

SHEET

REVISION

1

PURPOSE OF TESTS

3

A

2

TEST EQUIPMENT REQUIRED

3

A

3

PRELIMINARY CHECK

3

A

4

SETTING CHECK

6

A

5

TESTING PROCEDURE

6

A

5.1. CURRENT MEASUREMENT TESTING

6

A

5.2. DIFFERENTIAL ELEMENT TESTING

6

A

5.3. TIMING TESTING 5.4. OVER CURRENT TEST 5.5. UNDER VOLTAGE / OVER VOLTAGE 5.6. DIRECTIONAL EARTH FAULT

7 8 8

A A A

FINAL CHECK RECORDING OF INSPECTION AND TEST DATA.

9 9

A

6 7

This document is the property of Alstom Grid - SBU ITS and cannot be used, reproduced or transmitted to thirds without prior written permission.

PT. ALSTOM GRID FA - Section

Ref. CURRENT LINE DIFFERENTIAL RELAY

Chapt.

NARI PCS-931

Sheet :

3

Rev.

A

A T : P/87L

1 - PURPOSE OF TESTS The test is intended to check correct relay operation in accordance to manufacturer publication or technical guide publication PCS-931_X_Instruction Manual_EN_Overseas General_X_R1.02

2 - TEST EQUIPMENT REQUIRED -

Time meter

-

Digital multimeter

-

Phase angle meter

-

Secondary injection capable for simulation fault (ex, OMICRON CMC 256/356)

-

A multi finger test plug type MML B01 for use with test block type MMLG (optional)

-

A portable computer with apporiate software

3 - PRELIMINARY CHECKS 3.1

Visual Check -

Carefully examine the relay to see that no physical damage has occurred since installation. Ensure that earthing connection at the rear of relay case, are used to

3.2

Wiring -

Check if the external wiring corresponds to the apporiate relay diagram or assembly diagram

-

When the relay is withdraw from its case,use continiuty tester to check if the current short circuit (phase and earth CT's) between the terminal indicated on the wiring diagram are closed.

This document is the property of Alstom Grid - SBU ITS and cannot be used, reproduced or transmitted to thirds without prior written permission.

PT. ALSTOM GRID FA - Section

Ref. CURRENT LINE DIFFERENTIAL RELAY

Chapt.

NARI PCS-931

Sheet :

4

Rev.

A

A T : P/87L

3.3

Binary Input - This test checks that all the opto-isolated inputs on the relay are functioning correctly. NARI PCS-931_X have up to 36 binary inputs - Ensure that the relay is still in test mode by viewing cell (COMMISSION TESTS, Test Mode) to ensure that it is set to ‘Blocked’.

3.4

Binary Output - This test checks that all the output relays are functioning correctly. NARI PCS-931_X have up to 55 binary inputs - Ensure that the relay is still in test mode by viewing cell (COMMISSION TESTS, Test Mode) to ensure that it is set to ‘Blocked’.

3.5

Rear communications port - This test should only be perform where the relay is to be accessed from a remote location and will vary depending on the communication standard being adopted. It is not the intention of the test to verify the operation of complete system from the relay to the remote location, just the relay's rear communications port and any protocol converter nessesary.

This document is the property of Alstom Grid - SBU ITS and cannot be used, reproduced or transmitted to thirds without prior written permission.

PT. ALSTOM GRID FA - Section

Ref. CURRENT LINE DIFFERENTIAL RELAY

Chapt.

NARI PCS-931

Sheet :

5

Rev.

A

A T : P/87L

Courier Communications Port If a K-Bus to EIA(RS)232 KITZ protocol converter is installed, connect a portable PC running the appropriate software to the incoming (remote from relay) side of the protocol converter. The terminal numbers for the relay’s K-Bus port are given in the table below.

Ensure that the communications baud rate and parity settings in the application software are set the same as those on the protocol converter (usually a KITZ but could be a SCADA RTU). The relays courier address in cell [0E02: COMMUNICATIONS, Remote Access] must be set to a value between 1 and 254. Check that communications can be established with this relay using the portable PC. Ethernet Port

This document is the property of Alstom Grid - SBU ITS and cannot be used, reproduced or transmitted to thirds without prior written permission.

PT. ALSTOM GRID

Ref.

FA - Section

CURRENT LINE DIFFERENTIAL RELAY

Chapt.

NARI PCS-931

Sheet :

6

Rev.

A

A T : P/87L

4. SETTING CHECKS The setting checks ensure that all of the application-specific relay settings (i.e. both the relay’s function and programmable scheme logic settings), for the particular installation, have been correctly applied to the relay. Note: The trip circuit should remain isolated during these checks to prevent accidental operation of the associated circuit breaker. Apply the protection setting based on Approved Calculation Note and the PSL logic scheme applied based on Approved Schematic Diagram. Before begin testing make sure that the relay is in the "INTERNAL LOOPBACK" condition. 5. TESTING PROCEDURE 5.1. Current Measurement Check - Input the protection setting (CT ratio, Idiff>, etc.) based on approved calculation note. - Setting PSL (Programmable Scheme Logic) based on approved schematic drawing - Inject secondary current per phase to secondary current terminal at protection panel (Please see Schematic drawing to locate the current terminal position) - Adjust the injected current so the measurement display meets the expected value; Record Data - Calculate the percent error; Record Data

%Error =

(Iinject x Iprimer) - Iexpected value

X100%

Iexpected value 5.2. Line Differential Element Check - Start by injecting current ±50% of the Idiff setting. - Raise the current slowly until the relay tripped. Record data - Keep injecting and slowly lower the current until the trip clear. Record Data - Run the test on every phase * Operation Criteria

This document is the property of Alstom Grid - SBU ITS and cannot be used, reproduced or transmitted to thirds without prior written permission.

PT. ALSTOM GRID FA - Section

Ref. CURRENT LINE DIFFERENTIAL RELAY

Chapt.

NARI PCS-931

Sheet :

7

Rev.

A

A T : P/87L

5.3. Line Differential Timing Check - Inject current up to 2 (two) times of the setting. - Record the tripping time data for each phase - Record the tripping time data using 2 (two) or more variables 5.4. Overcurrent & Earth Fault Element Check - Start by injecting current ±50% of the I1> setting. - Raise the current slowly until the relay tripped. Record data - Keep injecting and slowly lower the current until the trip clear. Record Data - Run the test on every phase - Start by injecting current ±50% of the IN1> setting. - Raise the current slowly until the relay tripped. Record data - Keep injecting and slowly lower the current until the trip clear. Record Data - Run the test on phase to ground 5.5. Overcurrent & Ground Fault Timing Check - Inject current up to 2 (two) times of the I1> setting for overcurrent testing & IN1> for ground fault testing. - Record the tripping time data for each phase - Record the tripping time data using 2 (two) or more variables 5.6. Under voltage & Over voltage Fault Element Check - Start by injecting voltage ±100% of the V1< setting. - Lower the voltage slowly until the relay tripped. Record data - Keep injecting and slowly raise the voltage until the trip clear. Record Data - Run the test on every phase for Under voltage Fault Element Check - Start by injecting voltage ±50% of the V1> setting. - Raise the voltage slowly until the relay tripped. Record data - Keep injecting and slowly lower the voltage until the trip clear. Record Data - Run the test on every phase for Over voltage Fault Element Check 5.7. Under voltage & Over Voltage Timing Check - Inject voltage up to 1/2 (one half) times of the V1< setting - Record the tripping time data for each phase - Record the tripping time data using 2 (two) or more variables - Inject voltage up to 2 (two) times of the V1> setting - Record the tripping time data for each phase - Record the tripping time data using 2 (two) or more variables

This document is the property of Alstom Grid - SBU ITS and cannot be used, reproduced or transmitted to thirds without prior written permission.

PT. ALSTOM GRID FA - Section

Ref. CURRENT LINE DIFFERENTIAL RELAY

Chapt.

NARI PCS-931

Sheet :

8

Rev.

A

A T : P/87L

5.8. Directional Earth Fault Element Check - Start by injecting current ±50% of the IN1> setting. - Inject 3 phase voltage with nominal voltage at 3 phase balance phase angle - Lower one of the phase voltage that is tested per ΔV setting - Raise the current slowly until the relay tripped. Record data - Keep injecting and slowly lower the current until the trip clear. Record Data 5.9. Directional Earth Fault Timing Check - Inject one of the phase current up to 2 (two) times of the IN1>. - Inject 3 phase voltage with nominal voltage at 3 phase balance phase angle - Lower one of the phase voltage that is tested per ΔV setting - Record the tripping time data for each phase - Record the tripping time data using 2 (two) or more variables 5.10. Circuit Breaker Failure Element Check - Simulate external tripping CBF initiation - Simulate CB closed position - Hold the external tripping and CB closed position for CBF initiation - Inject current ±50% of the I> setting - Raise the current by interval until the relay trip. Record data - Lower the current by interval until the trip clear. Record data 5.11. Circuit Breaker Failure Timing Check - Simulate external tripping CBF initiation - Simulate CB closed position - Hold the external tripping and CB closed position for CBF initiation - Inject current up to 2 (two) times of the I> setting - Record the tripping time data for each phase - Record the tripping time data using 2 (two) or more variables

This document is the property of Alstom Grid - SBU ITS and cannot be used, reproduced or transmitted to thirds without prior written permission.

PT. ALSTOM GRID

Ref.

FA - Section

CURRENT LINE DIFFERENTIAL RELAY

Chapt.

NARI PCS-931

Sheet :

9

Rev.

A

A T : P/87L

6. FINAL CHECKS The tests are now complete. Remove all test or temporary shorting leads, etc. If it has been necessary to disconnect any of the external wiring from the relay in order to perform the wiring verification tests, it should be ensured that all connections (wiring, fuses and links) are replaced in accordance with the relevant external connection or scheme diagram. Ensure that the relay has been restored to service by checking that cell [0F0D: COMMISSION TESTS, Test Mode] is set to ‘Disabled’. If the relay is in a new installation or the circuit breaker has just been maintained, the circuit breaker maintenance and current counters should be zero. These counters can be reset using cell [0609: CB CONDITION, Reset All Values]. If the required access level is not active, the relay will prompt for a password to be entered so that the setting change can be made. If the menu language has been changed to allow accurate testing it should be restored to the customer’s preferred language. If a P991/MMLG test block is installed, remove the P992/MMLB test plug and replace the cover so that the protection is put into service. Ensure that all event records, fault records, disturbance records, alarms and LEDs have been reset before leaving the relay. If applicable, replace the secondary front cover on the relay.

7. RECORDING OF INSPECTION AND TEST DATA The result of check and measurements made during the field test shell be recorded on test report form - I.08.H.NBA.0012

This document is the property of Alstom Grid - SBU ITS and cannot be used, reproduced or transmitted to thirds without prior written permission.