Distance Report

NAME OF THE SUBSTATION:765/400/220KV MEERUT S/S TEST DESCRIPTION

DISTANCE RELAY 7SA522

MAIN-1

PANEL:415RA

MANDOLA-3 LINE

SHEET NO: 1-8

CUSTOMER:PGCIL

FINAL SETTING TEST

DATE:06/08/2012

1. RELAY DETAILS: Make

: Siemens

Relay Type

: 7SA522

Panel Ref

: 415RA

MLFB

: 7SA522-6CB90-4QB4/0S

Relay Sl.No

: BF-1101072724

Rated current

: 1A

Aux Supply

: 220V DC

P-Set

: V04.70.07

2. MECHANICAL CHECKS AND VISUAL INSPECTION. ITEM

DISCRIPTION

CHECKED

1.

Inspect for physical damage / defects

Yes

------

2.

Verify connections as per approved drawings

Yes

------

3.

Check of relay grounding.

Yes

------

4.

Led’s operations Checked

Yes

------

5.

Date and Time set in the relay

Yes

------

6.

Input / Output Checked

Yes

------

7.

Disturbance Recorder Checked for all faults

Yes

------

TESTED BY M/s SIEMENS

WITNESSED BY PGCIL

DATE

06.08.2012

SECONDARY INJECTION TEST: 3. MEASUREMENT CHECK: Phase Ref. R-N Y-N B-N

Applied Current (A) Secondary 1.00∟0˚ 1.00∟240˚ 1.00∟120˚

Measured Current in Relay Primary (KA) 2.00 2.00 2.00

Phase Ref

Applied Value (V)

VT Ratio Applied

Displayed Primary Value (KV)

VAB

110∟30°

400KV/110V

400

VBC

110∟270°

400KV/110V

400

VCA

110∟150°

400KV/110V

400

VAN

63.51∟0.0°

400KV/110V

231

VBN

63.51∟240°

400KV/110V

231

VCN

63.51∟120°

400KV/110V

231

INPUT

INJECTION VALUE

EXPECTED VALUE

DISPLAYED VALUE

Frequency

50 HZ

50 Hz

50 Hz

P (GW)

VA=63.51∟0°

1385.64MW

1.38 GW

Q (GVAR)

VB=63.51∟240°

0.00 MVAR

0.0 GVAR

S (GVA)

VC=63.51∟120°

1385.64MVA

1.38 GVA

1.00

1.00

IA=1.0∟0.0° PF

IB=1.0∟240° IC=1.0∟120°

4. ZONE REACH & TIMING TEST: TESTED BY M/s SIEMENS

WITNESSED BY PGCIL

DATE

06.08.2012

Doble test report format Attached *Distance protection is blocked during VT Fuse fail condition and Line isolator open condition. 5. COMMUNICATION SCHEME LOGIC CR SEND SIGNAL LOGIC Z1-Forward –CR Send checked OK Z2-Forward- CR Send checked OK TRIP LOGIC Z2 Fault + CR Receive + CR Channel Healthy

-

23.30ms

Z2 Fault + CR Receive + CR Channel Faulty

-

322.10ms

Z2 Fault + NO CR Receive + CR Channel Healthy -

326.80ms

Z2 Fault + NO CR Receive + CR Channel Faulty

322.80ms

-

6. FAULT LOCATOR Reactance = 0.1817Ω/KM Line Length=102KM Total line reactance = 18.5334 Ω, 86° % of Line length 100 50

L1-E 102. 3 52.5

L2-E 102.2 52.1

Measured Line Length (KM) L3-E L1-L2 L2-L3 L3-L1 102. 102.2 102.2 102.3 4 52.8 52.2 52.9 52.6

L1-L2-L3 102.0 51.2

7. SWITCH ON TO FAULT (SOTF) Address 2404 50HS High Speed SOTF-O/C P/U = 2.50 A 1232 Recognition of line closure with = Manual close BI OR Current flow 1150 Seal in Time after Manual Closure = 0.3 sec 1232 Instant. Trip after SOTF to inactive Current Flow Method TESTED BY M/s SIEMENS

WITNESSED BY PGCIL

With Manual close BI DATE

06.08.2012

Meas.Time Pickup Current (A) (S) R-N 2.515 23.20 2.550 Y-N 2.520 18.10 2.550 B-N 2.515 31.10 2.550 *Inject directly 2.51A and Measure the trip time. Phase Ref.

Pickup Current (A)

Meas.Time (S) 22.60 22.00 31.10

8. OVER VOLTAGE PROTECTION (PH-E) Stage-1: Setting: 70V, 2.0Sec Phase Ref R-N Y-N B-N

Pickup (V) 70.04 70.04 69.97

Drop-Off (V) 68.62 68.68 68.63

DO/PU Ratio 97.97% 98.05% 98.08%

Time (S) 2.033 2.034 2.033

DO/PU Ratio 97.97% 97.96% 98.06%

Time (ms) 133.30 133.20 133.50

Stage-2: Setting: 95V, 0.1Sec Phase Ref R-N Y-N B-N

Pickup (V) 95.04 95.07 94.96

Drop-Off (V) 93.12 93.14 93.12

OVER VOLTAGE PROTECTION (PH-PH) Stage-1: Setting: 121V, 2.0Sec Phase Ref R-Y Y-B B-R

Ph-ph Setting (V) 121.00 121.00 121.00

TESTED BY M/s SIEMENS

Pickup (V)

Drop-Off (V)

DO/PU Ratio

Time (S)

121.070 121.035 121.053

118.610 118.680 118.818

97.96% 98.05% 98.15%

2.033 2.034 2.033

WITNESSED BY PGCIL

DATE

06.08.2012

Stage-2: Setting: 165V, 0.1Sec Phase Ref R-Y Y-B B-R

Ph-ph Setting (V) 165.00 165.00 165.00

Pickup (V)

Drop-Off (V)

DO/PU Ratio

Time (ms)

165.064 165.029 164.990

161.756 161.770 161.738

97.99% 98.02% 98.02%

132.60 134.00 133.30

9. DIRECTIONAL EARTH FAULT Setting: 0.1A, 1.00Sec, α=338°, β=122° Phase Ref Pick-up (A) Drop-Off (A) Time (S) Operating Region R-N 0.104 0.081 1.028 340°-0°-122° Y-N 0.106 0.085 1.030 219°-240°-0° B-N 0.103 0.083 1.029 100°-120°-242° *DEF blocking is checked during VT Fuse fail condition. 10. VT FUSE FAIL ALARM Address 2911 Minimum Voltage Threshold U> =30.0V 2912 Maximum Current Threshold I< =0.10A 2913 Maximum Voltage Threshold U< =5V 2914 Differential Current threshold I =0.10A

1Ø VT Fuse fail 3Ø VT Fuse fail Pick-up Uo Applied Phase Ref Pick-up (V) (V) Current(A) R-N 29.95 4.99 1.00 Y-N 30.03 4.99 1.00 B-N 29.95 4.99 1.00 *For 3Ø VT fuse fail, Reduced the 3Ø voltage less than the set value immediately.

TESTED BY M/s SIEMENS

WITNESSED BY PGCIL

DATE

06.08.2012

11. STUB PROTECTION Based on Phase Current I>1.50A, 0.0Sec Phase Ref R-N Y-N B-N

I>Set (A) 1.50 1.50 1.50

Pick-up (A) 1.495 1.498 1.498

Time (ms) 37.40 37.40 37.40

Based on Zero Sequence current 3Io>0.20A, 0.00Sec Phase Ref 3Io> (A) Pick-up (A) Time (ms) R-N 0.02 0.199 30.00 Y-N 0.02 0.199 37.10 B-N 0.02 0.199 32.70 *STUB protection is blocked while isolator is in closed condition. 12. UNDER VOLTAGE PROTECTION (PH-E): ALARM ONLY Stage-1: Setting: 57.00V, 2.0Sec Phase Ref R-N Y-N B-N

Applied Current (A) 0.20 0.20 0.20

Pickup (V)

Time (S)

57.07 57.08 57.01

2.0319 2.0320 2.0326

Stage-2: Setting: 32.00V, 0.1Sec Phase Ref R-N Y-N B-N

Applied Current (A) 0.20 0.20 0.20

TESTED BY M/s SIEMENS

Pickup (V)

Time (ms)

31.99 32.04 32.01

132.90 132.20 132.90

WITNESSED BY PGCIL

DATE

06.08.2012

UNDER VOLTAGE PROTECTION (PH-PH): ALARM ONLY Stage-1: Setting: 99.00V, 2.0Sec Phase Ref R-Y Y-B B-R

Applied Current (A) 0.20 0.20 0.20

Pickup Voltage (V) 99.055 99.107 99.038

Time (S) 2.031 2.032 2.033

Stage-2: Setting: 55.00V, 0.1Sec Phase Ref R-Y Y-B B-R

Applied Current (A) 0.20 0.20 0.20

Pickup Voltage (V) 55.06 55.06 55.06

Time (ms) 132.10 133.10 132.70

13. POWER SWING BLOCKING This simulation is done by State sequencer method. Ref VA

IR

STATE-1 63.51∟0° 63.51∟240 ° 63.51∟120 ° 0.00∟0°

IY

0.00∟240°

IB

0.00∟120°

Time

20ms

VB VC

STATE-2 53.51∟0° 53.51∟240 ° 53.51∟120 ° 0.250∟0° 0.250∟240 ° 0.250∟120 ° 20ms

TESTED BY M/s SIEMENS

STATE-3 45.51∟0° 45.51∟240 ° 45.51∟120 ° 0.50∟0°

STATE-4 35.51∟0° 35.51∟240 ° 35.51∟120 ° 1.0∟0°

STATE-5 25.51∟0° 25.51∟240 ° 25.51∟120 ° 1.50∟0°

0.50∟240°

1.0∟240°

1.50∟240°

2.00∟240°

0.50∟120°

1.0∟120°

1.50∟120°

2.00∟120°

20ms

20ms

20ms

20ms

WITNESSED BY PGCIL

STATE-6 15.51∟0° 15.51∟240° 15.51∟120° 2.00∟0°

DATE

06.08.2012

14. DT SEND: DT Send for: Over Voltage Protection Directional Earth fault Protection DT Send checked: OK 15. DT RECEIVED: Activate the binary Input No: 4 (J4 - J5) by Jumpering the terminal of XPLCC: 1 & 5 in 415RA Panel. Lockout Relay Operation Checked: OK 16. AUTO RECLOSER: (Through BCU) Auto Recloser Operating Conditions Fault Type Z1-R Phase Z1-Y Phase Z1-B Phase CR+Z1B –R Ph CR+Z1B –Y Ph CR+Z1B –B Ph

% of Fault Applied

Main CB Status

Tie-CB Status

50

Reclosed

Reclosed

100

Reclosed

Reclosed

Main CB Status

Tie-CB Status

Not Reclosed

Not Reclosed

Not Reclosed

Not Reclosed

Line Length Measured (KM) 52.40 52.10 52.20 105.0 105.7 104.9

Auto Recloser Lockout Conditions Fault Type Z2-1Phase Z1-Ph-Ph Z1-3Phase CR+Z1B –(Ph-Ph) TESTED BY M/s SIEMENS

% of Fault Applied 100 50 100

WITNESSED BY PGCIL

Line Length Measured (KM) 102.0 53.00 48.90 105.60 DATE

06.08.2012

CR+Z1B –3Phase Reclaim Time Fault

102.00 52.40

AR PRIORITY CLOSING Main CB AR ON OFF ON OFF

Tie CB AR ON ON OFF OFF

Remarks Main CB & TIE CB Reclosed Priority Close of TIE CB Main CB Reclosed & TIE CB Locked out Main & Tie Locked Out

REMARKS: Relay found healthy and fit for service

TESTED BY M/s SIEMENS

WITNESSED BY PGCIL

DATE

06.08.2012