Commissioning ServiceDepartment Commissioning Standard Test Formats Description: LINE DIFFERENTIAL PROT. – Record No.: SEL-411L Bay no.: Drawing ref.: Sheet: 1 of 25 Contractor: Contract no.: Substation No : 1. GENERAL DATA & INFORMATION Bay No. Bay Name 0411L1x6x1C7CCxH5C4 Relay designation LINE DIFF. Model No. 24xx Make S. No. Rated Current 1A Rated Voltage 66.4 V L-N AC Frequency 50/60 HZ Logic inputs 125VDC Aux. Voltage 125/250V AC/DC Comm. Interface IEEEC37.94, Comm. Interface IEEEC37.94, CH-X 850nm Fiber CH-Y 850nm Fiber 2. MECHANICAL CHECKS AND VISUAL INSPECTION Sl.no General checks Status 1. Inspect for no physical damage. 2. Verify the wiring connection as per approved drawing. 3. Relay case connected to a local earth bar. 4. Power up the relay circuit and check relay is healthy. 5. Set the relay internal clock. Send the relay setting configuration file to relay through Port 6. F. 3. WATCHDOG RELAY CHECK: Check status of watchdog contacts as below. Contact Status OUTPUT Remarks Relay De- energized Relay Energized ALARM C28-C29 CLOSE OPEN Tested by: ENG. Witnessed by: ENG. Signature & Date: Signature & Date: Commissioning Service Department Commissioning Standard Test Formats Description: LINE DIFFERENTIAL PROT. – Record No.: SEL-411L Bay no.: Drawing ref.: Sheet: 2 of 25 Contractor: Contract no.: Substation No : 4. RELAY DC BURDEN CHECK: V Aux I Measured Relay Status Expected Watts Calculated Watts Applied(V) (mA) Enabled 125 <25W Enabled & 125 <25W Trip 5. CONTROL INPUT CHECK: This is to verify the healthiness of the DC control inputs. Apply a rated voltage at each input and verify the status of the input at Front panel or 5025 HMI. Note: - Open 5025 HMI view after the relay is connected to PC. - Open “Device Overview” page and observe the Inputs status. Tested by: ENG. Witnessed by: ENG. Signature & Date: Signature & Date: Witnessed by: ENG.: Drawing ref. Commissioning Service Department Commissioning Standard Test Formats Description: LINE DIFFERENTIAL PROT.: Sheet: 3 of 25 Contractor: Contract no.: Substation No : Control input No.: SEL-411L Bay no. Signature & Date: Signature & Date: . – Record No. Configuration Result IN201 IN202 IN203 IN204 IN205 IN206 IN207 IN208 IN209 IN210 IN211 IN212 IN213 IN214 IN215 IN216 IN217 IN218 IN219 IN220 IN221 IN222 IN223 IN224 IN301 IN302 IN303 IN304 IN305 IN306 IN307 IN308 Tested by: ENG. Execute the PULSE command.: SEL-411L Bay no. “Breaker” jumper “JMP18-C” shall be put ON position. – Record No. Open 5025 HMI view after the relay is connected to PC. Commissioning Service Department Commissioning Standard Test Formats Description: LINE DIFFERENTIAL PROT. For PULSE the relay outputs. The jumper “JMP18-C” is available in main board. Open the relay front cover. Signature & Date: Signature & Date: . CONTROL OUTPUT RELAY CHECK: This is to verify the healthiness of the Control output relay healthiness.: Drawing ref. the check continuity of the contact that closes. . . Output Relay No. Operate each output through front panel or 5025 HMI. Witnessed by: ENG.: Substation No : 6. Verify the physical contact close of the corresponding output. Open “Control Window” page and Select the OUTPUT that you want to PULSE and select the duration of the PULSE. . which is on the top. page 852. . as mentioned in instruction manual section2. Configuration Result OUT201 OUT202 OUT203 OUT204 OUT205 OUT206 OUT207 OUT208 OUT301 OUT302 OUT303 OUT304 OUT305 OUT306 OUT307 OUT308 OUT309 OUT310 OUT311 OUT312 OUT313 OUT314 OUT315 Tested by: ENG.: Sheet: 4 of 25 Contractor: Contract no. and change the jumper to ON position on main board. However the complete relaying scheme shall be tested and recorded under section “END-TO-END” test. . Commissioning Service Department Commissioning Standard Test Formats Description: LINE DIFFERENTIAL PROT.2” for relay Measurement report. Note: . The following tests in this section “SINGLE END INJECTION” are conducted with relay 87L channels are put in LOOPBACK Mode.: SEL-411L Bay no. Also it requires current injection at local and remote end with time synchronized test operation. So. . These tests prove the relay healthiness. Signature & Date: Signature & Date: .: Sheet: 5 of 25 Contractor: Contract no. Tested by: ENG.87L function test requires. input and output configuration. both local relay and remote relay connected with 87L communication interface and both are powered up. – Record No. Step2: Measure the current/voltage at relay HMI or from 5025HMI. 8.: Drawing ref.Open 5025 HMI view after connecting to the relay. Single end current injection allows us to test only 87L sensitivity test.: Substation No : 7. NOTE: . setting sensitivity. SINGLE END INJECTION (LOCAL): The complete 87L relaying scheme requires pair of two relays one at each end for testing. the sensitivity test only being performed and that is sufficient to verify the 87L setting. CT/VT INPUT CHECK: Note: This test is intended to verify the CT/VT inputs. Step1: Apply rated voltage and current to the relay CT/VT inputs. Witnessed by: ENG. VTR setting in the local relay. .Click “Local Instantaneous metering” view and save the snapshot in to annexure word document. Find the “Report annexure section.Click “phasor” view and save the snapshot in to annexure word document. measurement and CTR. 0A PTR: 380KV/115V CTR: 3000/1A CURRENT MEASUREMENT: PHASE A PHASE B PHASE C 3I0 3I2 I1 Local MAG/ ANG MAG/ ANG MAG/ ANG MAG/ ANG MAG/ ANG MAG/ ANG Expected Actual Tested by: ENG. Signature & Date: Signature & Date: .: Substation No : Voltage Applied: 3PH. Witnessed by: ENG.: Drawing ref.: SEL-411L Bay no. 115V AC Current applied: 3PH. – Record No. 1.: Sheet: 6 of 25 Contractor: Contract no. Commissioning Service Department Commissioning Standard Test Formats Description: LINE DIFFERENTIAL PROT. Signature & Date: Signature & Date: .: Substation No : PHASE A PHASE B PHASE C 3I0 3I2 I1 Local MAG/ ANG MAG/ ANG MAG/ ANG MAG/ ANG MAG/ ANG MAG/ ANG Expected Actual Tested by: ENG. Commissioning Service Department Commissioning Standard Test Formats Description: LINE DIFFERENTIAL PROT.: Drawing ref.: SEL-411L Bay no. Witnessed by: ENG. – Record No.: Sheet: 7 of 25 Contractor: Contract no. : Drawing ref. Witnessed by: ENG. – Record No. Signature & Date: Signature & Date: .: Substation No : PHASE A 3I2 PHASE B PHASE C 3I0 I1 Local MAG/ MAG/ MAG/ ANG MAG/ ANG MAG/ ANG MAG/ ANG ANG ANG Expected Actual Tested by: ENG. Commissioning Service Department Commissioning Standard Test Formats Description: LINE DIFFERENTIAL PROT.: SEL-411L Bay no.: Sheet: 8 of 25 Contractor: Contract no. Commissioning Service Department Commissioning Standard Test Formats Description: LINE DIFFERENTIAL PROT. VOLTAGE MEASUREMENT: Local PHASE AN MAG/ ANG PHASE BN MAG/ ANG PHASE CN MAG/ ANG Expected Actual Tested by: ENG.: SEL-411L Bay no. Witnessed by: ENG.: Drawing ref. – Record No. Signature & Date: Signature & Date: .: Sheet: 9 of 25 Contractor: Contract no.: Substation No : 9. Signature & Date: Signature & Date: .: Drawing ref. – Record No. Witnessed by: ENG.: Sheet: 10 of 25 Contractor: Contract no.: Substation No : Tested by: ENG.: SEL-411L Bay no. Commissioning Service Department Commissioning Standard Test Formats Description: LINE DIFFERENTIAL PROT. – Record No. Commissioning Service Department Commissioning Standard Test Formats Description: LINE DIFFERENTIAL PROT. Signature & Date: Signature & Date: .: Drawing ref. Witnessed by: ENG.: Sheet: 11 of 25 Contractor: Contract no.: SEL-411L Bay no.: Substation No : PHASE CN MAG/ Local PHASE AN MAG/ ANG PHASE BN MAG/ ANG ANG Expected Actual Tested by: ENG. Commissioning Service Department Commissioning Standard Test Formats Description: LINE DIFFERENTIAL PROT.: Substation No : PHASE AN MAG/ PHASE BN MAG/ PHASE CN MAG/ Local ANG ANG ANG Expected Actual Tested by: ENG.: Sheet: 12 of 25 Contractor: Contract no.: SEL-411L Bay no. – Record No. Witnessed by: ENG. Signature & Date: Signature & Date: .: Drawing ref. Commissioning Service Department Commissioning Standard Test Formats Description: LINE DIFFERENTIAL PROT.: Drawing ref.: Substation No : 10. Signature & Date: Signature & Date: .: SEL-411L Bay no.: Sheet: 13 of 25 Contractor: Contract no. POWER MEASUREMENT: Current phase angle = -45deg Local MW MVAR PF Expected Actual Tested by: ENG. – Record No. Witnessed by: ENG. Commissioning Service Department Commissioning Standard Test Formats Description: LINE DIFFERENTIAL PROT. – Record No. Witnessed by: ENG.: Substation No : ACCURACY: according to the catalogue page 59 Tested by: ENG.: SEL-411L Bay no. Signature & Date: Signature & Date: .: Drawing ref.: Sheet: 14 of 25 Contractor: Contract no. Commissioning Service Department Commissioning Standard Test Formats Description: LINE DIFFERENTIAL PROT. Signature & Date: Signature & Date: .: SEL-411L Bay no. Witnessed by: ENG.: Substation No : Tested by: ENG. – Record No.: Drawing ref.: Sheet: 15 of 25 Contractor: Contract no. : Substation No : 11. . Note: The Restraining criterion is disabled until the relay finds more than 5%Inom both remote and local current. It isn’t allowed to put Ch 1 and Ch 2 in loopback in same time Tested by: ENG. .Type TEST 87L command as below to put CH1 or CH 2 in Test loopback.Open “terminal “View”. Witnessed by: ENG. .: Sheet: 16 of 25 Contractor: Contract no. Signature & Date: Signature & Date: . A. Enter level 2. the relay substitutes the address of the remote relay with its own address in order to allow the 87L element to respond to the data transmitted by it.: Drawing ref.: SEL-411L Bay no. The differential current (vector sum magnitude) is greater than minimum threshold (87LPP/ 87L2P/87LGP). Channel 1 or2 shall be put LOOP BACK mode with following procedure.Connect PC to relay using 5030. To activate the Loop Back mode: The comm. 87L DIFFERENTIAL PROTECTION: OPERATING PRINCIPLE: The 87L protection function outputs trip when the following conditions (A & B) are met. B. When the loopback test is active. Commissioning Service Department Commissioning Standard Test Formats Description: LINE DIFFERENTIAL PROT.1. – Record No.The fiber cable must be connected on the relay (between Tx to Rx) to the channel which we need to put in test loopback. The 87L Test command can be used to facilitate loopback testing of communications channels to avoid the problem with a communications channel. MEASUREMENT OF CURRENT: LOOPBACK TEST MODE: The second option in the test mode is the loopback test. 11. . The Alpha value is not in the Restraining Region on the alpha plane (OR) the Restraining criterion is disabled. 998<.: Sheet: 17 of 25 Contractor: Contract no. - Tested by: ENG.999<120 0. .: Drawing ref.: Substation No : Current applied: 3PH. 0.998<.999<0 0.02 120 . .9 137 CHANNEL 0. Signature & Date: Signature & Date: .998<. 0.998<- 1<119.003<10 0.02 120 9 134 0.002<.001<15 0.94 1 0. 1. 0. 1.9 Alpha 1<180 1<180 1<180 .001<- LOCAL 0.998<119 . Commissioning Service Department Commissioning Standard Test Formats Description: LINE DIFFERENTIAL PROT. 1A PTR: 380KV/115V CTR: 3000/1A CURRENT MEASUREMENT WITH ONLY CH 1: PHASE A 3I2 PHASE B PHASE C 3I0 I1 MAG/ MAG/ MAG/ ANG MAG/ ANG MAG/ ANG MAG/ ANG ANG ANG 0. – Record No.998<.998<.04 Differentia 1.01 120 7. 0. - l 0. Witnessed by: ENG.: SEL-411L Bay no.998<. 0. 997<.01 120. 1A PTR: 380KV/115V CTR: 3000/1A CURRENT MEASUREMENT WITH ONLY CH 2: PHASE A 3I2 PHASE B PHASE C 3I0 I1 MAG/ MAG/ MAG/ ANG MAG/ ANG MAG/ ANG MAG/ ANG ANG ANG 0.: Drawing ref. 0. Witnessed by: ENG. – Record No.2 . Signature & Date: Signature & Date: .998<120 .58 0.998<0.998<0 2 01 120 8.998<.46 CHANNEL 0.: SEL-411L Bay no. .998<0 0.001<30 0.997<120 0.: Substation No : Current applied: 3PH. . 1. 0.998<- 1. 0.002<- LOCAL 0.001<17 0. Commissioning Service Department Commissioning Standard Test Formats Description: LINE DIFFERENTIAL PROT.: Sheet: 18 of 25 Contractor: Contract no. - Tested by: ENG.89 Differentia 1.996<0 1.997<120 0<-73. - l 120 Alpha 1<180 1<180 1<180 .998<. 0. Witnessed by: ENG.1.: Substation No : ALPHA VALUE: Alpha is complex ratio between Remote current (IR) and local current (IL). SENSITIVITY TEST: Tested by: ENG.: Drawing ref.The sensitivity and timing tests are conducted with relay to relay. So. Signature & Date: Signature & Date: . So. the expected pickup current is 50% of the 87LPP/ 87L2P / 87LGP. It is represented with magnitude and angle. Commissioning Service Department Commissioning Standard Test Formats Description: LINE DIFFERENTIAL PROT. 12. I.: SEL-411L Bay no. which is ideal operating point in operating region of Alpha plane. . – Record No. the relay would see differential current twice the injected local current and the Alpha Value would be always 1<0deg .: Sheet: 19 of 25 Contractor: Contract no.In LOOP BACK test the local current is routed as remote current. sensitivity and TIMING TEST: ( ONLY WITH CH-X) Note: . When prompted. 1. Step3: Increase current on one phase until relay trips on 87. Step4: The appropriate Relay Word Bit shall be monitored on front panel or 5025 HMI.: Substation No : Step1: Set ‘EOCTL’ =N. EDD=N. 3.87LG and blocking due to slow change in current. Step2: Set 87L2P=OFF and 87LGP =OFF.: Drawing ref. PHASE CURRENT DIFFFERENTIAL: Phase A Phase B Phase C Expect HMI HMI HMI ed displa displa displa 87LP y y y pick P/U D/O P/U D/O P/U D/O P Idiff = Idiff = Idiff = up (A) (A) (A) (A) (A) (A) 87LPP IAT IBT ICT (secA (sec (sec ) A) A) Tested by: ENG. select a characteristic test and single-terminal mode. Ensure that relay outputs are supervised or isolated. Do the same while testing others. Witnessed by: ENG. Repeat the same for other phases. Use the TEST 87L command to enter Test Mode 2. Commissioning Service Department Commissioning Standard Test Formats Description: LINE DIFFERENTIAL PROT. See Test Precautions for details.: SEL-411L Bay no. to avoid blocking of 87L2.: Sheet: 20 of 25 Contractor: Contract no. Choose the element and normal or secure depending on the particular settings to be tested. – Record No. Signature & Date: Signature & Date: . while testing 87LP. Witnessed by: ENG.: Substation No : Pick up Accuracy: ±3% ±0. But the relay compares 3 x I2_injected and 3 x I0_injected with the 87L2P / 87LGP thresholds.: Drawing ref.zero seq diff Expecte 87L2P d pick HMI HMI / up display display 87LGP 87L2P or P/U (A) Idiff= D/O (A) P/U (A) Idiff= D/O (A) 87LGP 3I2T 3I0T (pri A) (Pri A) Note: For 87L2 /87LG sensitivity a single phase current shall be injected. In this case the negative sequence (I2) or zero sequence (I0) current is equal to 1/3* Iph. Tested by: ENG. – Record No.01 INOM. Commissioning Service Department Commissioning Standard Test Formats Description: LINE DIFFERENTIAL PROT.: SEL-411L Bay no. Signature & Date: Signature & Date: .: Sheet: 21 of 25 Contractor: Contract no. According to the Catalogue for manual # 20130311 Page 56 Phase A Phase B Phase C Expect HMI HMI HMI ed displa displa displa 87LP y y y pick P/U D/O P/U D/O P/U D/O P Idiff = Idiff = Idiff = up (A) (A) (A) (A) (A) (A) 87LPP IAT IBT ICT (secA (sec (sec ) A) A) NEGATIVE/ ZERO SEQ CURRENT DIFFERENTIAL: 87L2 –Negative seq diff 87LG. IL angle IR angle at Relay IR angle at Relay Diff.The same shall be done for other phases. ALPHA ANGLE TEST: SETTING: 87LPP: 1.Apply Phase A.0A 87L2P: 0. local current and remote current as IR= 1A<0deg.: Drawing ref. Commissioning Service Department Commissioning Standard Test Formats Description: LINE DIFFERENTIAL PROT. if the injection shall be performed at different location of local and remote relay. According to the Catalogue for manual Page 56 Tested by: ENG. .: Sheet: 22 of 25 Contractor: Contract no.Enable 87LPP and disable 87L2P and 87LGP for testing 87LP. With this current the relay would be operate region. – Record No.Vary the phase angle of IR and note down relay operate region and restrain region.1A 87LGP: 0.: Substation No : TIMING TEST: SETTING: 87LPP: A 87L2P: A 87LGP: A Operating time at PHASE Inject current Delay time 2x87LPP (msec) A B C 13. ALPHA PLANE RESTRAIN TEST: Note: This test requires simultaneous current inject from time synchronized test kits. Signature & Date: Signature & Date: .1A 87LR:2TST 87LANG:195 DEG . IL=1A<0deg. Witnessed by: ENG.3° of angle setting. element (fixed) operates resets 87LA 0 87LB 240 87LC 120 87L2 0 87LG 0 Accuracy: +/. .: SEL-411L Bay no. . 3deg .: Sheet: 23 of 25 Contractor: Contract no.: SEL-411L Bay no.: Substation No : Expected Restraining angle: Alpha angle = 180deg to 180-(87LANG/2) Setting 87LANG=195deg. Witnessed by: ENG. Tested by: ENG. Commissioning Service Department Commissioning Standard Test Formats Description: LINE DIFFERENTIAL PROT. Operating angle = 82. Signature & Date: Signature & Date: . – Record No. Restraining angle = 180 to 82.: Drawing ref.5 deg.5deg to 0deg Accuracy: +/. RADIUS ODPERATION RADIUS OPERATION Diff.: Drawing ref. Commissioning Service Department Commissioning Standard Test Formats Description: LINE DIFFERENTIAL PROT.1A 87LGP: 0. ALPHA RADIUS MEASURED AT ALPHA ANGLE =180deg. AL-BABTAIN Tested by: ENG.: Substation No : ALPHA RADIUS TEST: SETTING: 87LPP: 0. Witnessed by: ENG. Increase the local current magnitude by fixing remote current until the relay trip to find the outer radius. Apply local and remote current out of phase and equal magnitude. Signature & Date: Signature & Date: . Increase the remote current magnitude by fixing local current until the relay trip to find the outer radius .: Sheet: 24 of 25 Contractor: Contract no.1A 87LR:2 87LANG:195 DEG .2 A 87L2P: 0. – Record No.: SEL-411L Bay no. element I I Local Radius(IL/IR I Remote I Local (A) Radius Remote(A) (fixed)A ) (fixed) A (IL/IR) Operate Operate 87LA 87LB 87LC 87L2 87LG Expected outer radius: 2 Accuracy: +/-5% setting as per instruction manual page 58. . Witnessed by: ENG.: Drawing ref. Commissioning Service Department Commissioning Standard Test Formats Description: LINE DIFFERENTIAL PROT. Signature & Date: Signature & Date: . – Record No.: Sheet: 25 of 25 Contractor: Contract no.: Substation No : Tested by: ENG.: SEL-411L Bay no.