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Report No: TATA POWER/110/11KV/BAY-UNIT-4/P642-87GT
Test Report of Generator Protection Relay, Type MICOM P642-87G1
General data:
Customer : TATA POWER Date :
Model No : P64291AD6M0060P Aux. Voltage : 220 V DC
Serial No : 32979439/07/14 Frequency : 50 Hz
Panel Ref :R2 Relay Ref : 87GT
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Report No: TATA POWER/110/11KV/BAY-UNIT-4/P642-87GT
Bay Ref :UNIT-4
1) MEASUREMENT CHECKS:
HV SIDE : CT RATIO: 300/5 A
LV SIDE: CT RATIO: 2000/5 A
INJECTED CURENT SOURCE-1 INJECTED CURENT SOURCE-1 FEEDBACK
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Report No: TATA POWER/110/11KV/BAY-UNIT-4/P642-87GT
TB1-23(A211) TB1-30(A221) TB4-1(S101)
TB1-24(A231) TB1-31(A241)
TB1-25(A251) TB1-32(A261) TB4-31(S161)
TB1-26(A271) TB1-33(A281)
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Report No: TATA POWER/110/11KV/BAY-UNIT-4/P642-87GT
R-PH Y-PH B-PH
INJECTED 1A0 1A -120 1A 120
CURRENT (HV)
INJECTED 1A180 1A60 1A-60
CURRENT (LV)
MEASURED 59 A0 59.9A30 59.9A270
CURRENT (HV)
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Report No: TATA POWER/110/11KV/BAY-UNIT-4/P642-87GT
MEASURED 398.6A150 399.4A30 398.6A270
CURRENT (LV)
I DIFF 0.204 PU 0.204 PU 0.204 PU
I BIAS 0.316 PU 0.316 PU 0.316 PU
BURDEN (HV) 0.160 V 0.163 V 0.227 V
BURDEN (LV) 0.040 V 0.032 V 0.028 V
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Report No: TATA POWER/110/11KV/BAY-UNIT-4/P642-87GT
Settings:
Ratings
Capacity 30 MVA
HV.Voltage 110KV
LV Voltage 11KV
CT Ratios
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Report No: TATA POWER/110/11KV/BAY-UNIT-4/P642-87GT
HV 300/5A
LV 2000/5A
Relay Settings DIFF
Vector group Y-wye
Is1 0.2
K1 30%
K2 80%
Is 2 2
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Report No: TATA POWER/110/11KV/BAY-UNIT-4/P642-87GT
2) STABILITY CHECK:
R-PH Y-PH B-PH
INJECTED 2.624A0 2.624A -120 2.624A 120
CURRENT (HV)
INJECTED 3.937A150 3.937A30 3.937A270
CURRENT (LV)
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Report No: TATA POWER/110/11KV/BAY-UNIT-4/P642-87GT
MEASURED 157.7A0 158.8A30 157.8A270
CURRENT (HV)
MEASURED 1.581KA150 1.589KA30 1.589KA270
CURRENT (LV)
I DIFF 0.002 PU 0.002 PU 0.002 PU
I BIAS 1.002 PU 1.002 PU 1.002 PU
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Report No: TATA POWER/110/11KV/BAY-UNIT-4/P642-87GT
3) SLOPE CHECK:
SLOPE 1:
INJECTED INJECTED I DIFF I BIAS
CURRENT (HV) CURRENT (LV)
3.554A0 3.937A150
0.356 PU 1.180 PU
3.554A-120 3.937A30
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Report No: TATA POWER/110/11KV/BAY-UNIT-4/P642-87GT
3.554A120 3.937A270
Slope 1=I DIFF / IBIAS
=0.356/1.180
=30.1%
K1=0.301
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Report No: TATA POWER/110/11KV/BAY-UNIT-4/P642-87GT
SLOPE 2:
INJECTED INJECTED I DIFF I BIAS
CURRENT (HV) CURRENT (LV)
8.5 A0 8.26 A 150
1.143 PU 2.678 PU
8.5 A -120 8.26 A 30
8.5 A 120 8.26 A 270
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Report No: TATA POWER/110/11KV/BAY-UNIT-4/P642-87GT
IDiff = K1*IS2+K2(IBias-IS2)
=0.301*2+0.8(2.678-2)
Idiff =1.142
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Report No: TATA POWER/110/11KV/BAY-UNIT-4/P642-87GT
EXPLANATION:
HV SIDE (PRIMARY & SECONDARY CURRENT);
MVA Rating
HV SIDE F.L CURRENT (PRIMARY) = ---------------------
3 KV Rating
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Report No: TATA POWER/110/11KV/BAY-UNIT-4/P642-87GT
30*1000
= ----------------------------
3*110
IPRY =157.4A
HV SIDE F.L CURRENT PRIMARY VALUE
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Report No: TATA POWER/110/11KV/BAY-UNIT-4/P642-87GT
HV SIDE FULL LOAD CURRENT (sec) = ------------------------------------------------- X 5 A
HV SIDE C.T RATIO IN PRIMARY VALUE
157.4
= ---------------------------------- X 5 A
300
ISEC = 2.624 A
HV SIDE CT RATIO (PRIMARY VALUE)
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Report No: TATA POWER/110/11KV/BAY-UNIT-4/P642-87GT
K amp matching factor = ----------------------------------------------------------------
For HV side HV SIDE F.L CURRENT (PRIMARYVALUE)
300
= --------------------
157.4
= 1.905
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Report No: TATA POWER/110/11KV/BAY-UNIT-4/P642-87GT
LV SIDE (PRIMARY & SECONDARY CURRENT);:
MVA Rating
LV SIDE F.L CURRENT (PRIMARY) = ---------------------
3 KV Rating
30*1000
= ----------------------------
3*11
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Report No: TATA POWER/110/11KV/BAY-UNIT-4/P642-87GT
IPRY = 1574.59 A
LV SIDE F.L CURRENT PRIMARY VALUE LV SIDE
FULL LOAD CURRENT (sec) = --------------------------------------------------------------
LV SIDE C.T RATIO IN PRIMARY VALUE
1574.59
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Report No: TATA POWER/110/11KV/BAY-UNIT-4/P642-87GT
= ------------------------- X 5
2500
ISEC = 3.149 A
LV SIDE CT RATIO (PRIMARY VALUE)
K amp matching factor = -----------------------------------------------------------------------
For LV sideLV SIDE F.L CURRENT (PRIMARYVALUE)
2500
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Report No: TATA POWER/110/11KV/BAY-UNIT-4/P642-87GT
= --------------------
1574.59
= 1.5877
1 PHASE PICK UP VALUE EXPLANATION
HV SIDE 1 PH PICK UP:
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Report No: TATA POWER/110/11KV/BAY-UNIT-4/P642-87GT
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Report No: TATA POWER/110/11KV/BAY-UNIT-4/P642-87GT
Differential setting value
For 1ph Pick up current = -------------------------------------- (rated sec current value)
K amp factor (HV) vec comp
0.2
= ------------------------------------- 5
1.905*0.67
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Report No: TATA POWER/110/11KV/BAY-UNIT-4/P642-87GT
= 0.7837 A
3 PHASE PICK UP VALUE EXP
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Report No: TATA POWER/110/11KV/BAY-UNIT-4/P642-87GT
Differential setting value
For 3ph Pick up current = -------------------------------------- (rated sec current value)
K amp factor (HV)
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Report No: TATA POWER/110/11KV/BAY-UNIT-4/P642-87GT
0.2
= ------------------------------------- 5
1.905
= 0.5249 A
LV SIDE 1 PH PICK UP
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Report No: TATA POWER/110/11KV/BAY-UNIT-4/P642-87GT
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Report No: TATA POWER/110/11KV/BAY-UNIT-4/P642-87GT
Differential setting value
For 1ph Pick up current = -------------------------------------- (rated sec current value)
K amp factor (LV) x vec comp
0.2
= ------------------------------------- 5
1.5877*0.67
= 0.9540 A
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Report No: TATA POWER/110/11KV/BAY-UNIT-4/P642-87GT
3 PHASE PICK UP VALUE EXP:
Differential setting value
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Report No: TATA POWER/110/11KV/BAY-UNIT-4/P642-87GT
For 3ph Pick up current = -------------------------------------- (rated sec current value)
K amp factor (HV)
0.2
= ------------------------------------- 5
1.5877
= 0.6983 A
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Report No: TATA POWER/110/11KV/BAY-UNIT-4/P642-87GT
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Report No: TATA POWER/110/11KV/BAY-UNIT-4/P642-87GT
4) PICK UP TEST:
HV I-PH PICK UP:
R-PH Y-PH Y-PH
INJECTED HV 0.800 A 0.800 A 0.800 A
CURRENT
PICK UP 0.789 A 0.788 A 0.788 A
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Report No: TATA POWER/110/11KV/BAY-UNIT-4/P642-87GT
TIME DELAY 43.4 ms 42.7 ms 44.4 ms
TRIP LED DIFF A-PH TRIP DIFF B-PH TRIP DIFF C-PH TRIP
TRIP RELAY 30XPA,86GB, 30XPA,86GB, 30XPA,86GB,
86TB,86UB 86TB,86UB 86TB,86UB
HV 3-PH PICK UP:
PHASE INJECTED PICK UP TIME TRIP TRIP
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Report No: TATA POWER/110/11KV/BAY-UNIT-4/P642-87GT
CURRENT DELAY LED RELAY
R-PH 0.600A DIFF 30XP1,86GB
Y-PH 0.600A 528 mA 37.80 ms A-PH,B-PH, ,86UB
C-PH
B-PH 0.600A
HV HS1 1-PH PICK UP:
R-PH Y-PH Y-PH
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Report No: TATA POWER/110/11KV/BAY-UNIT-4/P642-87GT
INJECTED 12 A 12 A 12 A
HV CURRENT
PICK UP 11.8 A 11.8 A 11.77 A
TIME DELAY 34.60 ms 30.4 ms 20.1 ms
TRIP LED DIFF A,B,C-PH DIFF A,B,C-PH DIFF A,B,C-PH
TRIP TRIP TRIP
FN KEY F1-HS1 TRIP F1-HS1 TRIP F1-HS1 TRIP
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Report No: TATA POWER/110/11KV/BAY-UNIT-4/P642-87GT
TRIP RELAY 30XPA,86GB, 30XPA,86GB, 30XPA,86GB,
86TB,86UB 86TB,86UB 86TB,86UB
HV HS1 3-PH PICK UP:
PHASE INJECTED PICK UP TIME TRIP TRIP RELAY
CURRENT DELAY LED
R-PH 8A DIFF 30XP1,86GB,
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Report No: TATA POWER/110/11KV/BAY-UNIT-4/P642-87GT
Y-PH 8A 7.870 A 19.30 ms A-PH,B-PH, 86UB
B-PH 8A C-PH
LV I-PH PICK UP:
R-PH Y-PH Y-PH
INJECTED 1.4 A 1.4 A
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Report No: TATA POWER/110/11KV/BAY-UNIT-4/P642-87GT
LV CURRENT 1.4 A
PICK UP 1.370A 1.360 A 1.359 A
TIME DELAY 43.10 ms 39.70 ms 43.20 ms
TRIP LED DIFF A-PH TRIP DIFF B-PH TRIP DIFF C-PH TRIP
TRIP RELAY 30XPA,86GB, 30XPA,86GB, 30XPA,86GB,
86TB,86UB 86TB,86UB 86TB,86UB
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Report No: TATA POWER/110/11KV/BAY-UNIT-4/P642-87GT
LV 3-PH PICK UP:
PHASE INJECTED PICK UP TIME TRIP TRIP
CURRENT DELAY LED RELAY
R-PH 0.800A DIFF 30XP1,86GB
Y-PH 0.800A 0.788 A 42.8 ms A-PH,B-PH, 86UB
C-PH
B-PH 0.800A
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Report No: TATA POWER/110/11KV/BAY-UNIT-4/P642-87GT
LV HS1 1-PH PICK UP:
R-PH Y-PH Y-PH
INJECTED 21 A 21 A 21 A
HV CURRENT
PICK UP 20.310 A 20.5 A 20.4 A
TIME DELAY 24.70 ms 20.90 ms 19.30 ms
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Report No: TATA POWER/110/11KV/BAY-UNIT-4/P642-87GT
TRIP LED DIFF A,B,C-PH DIFF A,B,C-PH DIFF A,B,C-PH
TRIP TRIP TRIP
FN KEY F1-HS1 TRIP F1-HS1 TRIP F1-HS1 TRIP
TRIP RELAY 30XPA,86GB, 30XPA,86GB, 30XPA,86GB,
86TB,86UB 86TB,86UB 86TB,86UB
LV HS1 3-PH PICK UP :
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Report No: TATA POWER/110/11KV/BAY-UNIT-4/P642-87GT
PHASE INJECTED PICK UP TIME TRIP TRIP
CURRENT DELAY LED RELAY
R-PH 12 A DIFF 30XP1,
Y-PH 12 A 11.78 A 19.50 ms A-PH,B-PH, 86GB,
B-PH 12 A C-PH 86UB
5) HARMONICS BLOCK:
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Report No: TATA POWER/110/11KV/BAY-UNIT-4/P642-87GT
Setting
2nd harmonic : 15 %
5Th harmonic : 30 %
2nd Harmonics:
Full load current injected in HV side & LV side, then decrease the HV side current, relay
tripped for the below mentioned value
INJECTED CURENT SOURCE-1 INJECTED CURENT SOURCE-1 FEEDBACK
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Report No: TATA POWER/110/11KV/BAY-UNIT-4/P642-87GT
TB1-30(A221) TB1-30(A221) TB4-1(S101)
TB1-31(A241) TB1-31(A241)
TB1-32(A261) TB1-32(A261) TB4-31(S161)
TB1-33(A281) TB1-33(A281)
S.NO PHASE INJECTED CURRENT STATUS
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Report No: TATA POWER/110/11KV/BAY-UNIT-4/P642-87GT
LV SIDE @ 100 HZ
HV SIDE @ 50 HZ
(PICK UP)
1 R 1 A0 @ 50 HZ 1 A0 @ 100 HZ
HARMONIC
2 Y 1 A-120 @ 50 HZ 1 A-120 @ 100 HZ BLOCK
(NO TRIP)
3 B 1 A-120 @ 50 HZ 1 A-120 @ 100 HZ
S.NO PHASE INJECTED CURRENT TIME TRIP
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Report No: TATA POWER/110/11KV/BAY-UNIT-4/P642-87GT
LV SIDE @ 100 HZ DELAY
HV SIDE @ 50 HZ LED
(PICK UP)
1 R 1 A0 @ 50 HZ 0.145A0 @ 100 HZ
30.5 ms DIFF
2 Y 1 A-120 @ 50 HZ 0.145A-120 @ 100 HZ A,B,C-PH
TRIP
3 B 1 A-120 @ 50 HZ 0.145A-120 @ 100 HZ
Operated value
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Report No: TATA POWER/110/11KV/BAY-UNIT-4/P642-87GT
2nd Harmonics in percentage = ------------------------------------------ 100
Rated secondary current value
0.145
=-------------------- 100
1
= 0.145
=14.5%
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Report No: TATA POWER/110/11KV/BAY-UNIT-4/P642-87GT
5th Harmonics:
Full load current injected in HV side & LV side, then decrease the HV side current, relay
tripped for the below mentioned value
INJECTED CURENT SOURCE-1 INJECTED CURENT SOURCE-1 FEEDBACK
TB1-30(A221) TB1-30(A221) TB4-1(S101)
TB1-31(A241) TB1-31(A241)
TB1-32(A261) TB1-32(A261) TB4-31(S161)
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Report No: TATA POWER/110/11KV/BAY-UNIT-4/P642-87GT
TB1-33(A281) TB1-33(A281)
INJECTED CURRENT
S.NO PHASE LV SIDE @ 250 HZ STATUS
HV SIDE @ 50 HZ
(PICK UP)
1 R 1 A0 @ 50 HZ 1 A0 @ 250 HZ HARMONIC
BLOCK
2 Y 1 A-120 @ 50 HZ 1 A-120 @ 250 HZ
(NO TRIP)
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Report No: TATA POWER/110/11KV/BAY-UNIT-4/P642-87GT
3 B 1 A-120 @ 50 HZ 1 A-120 @ 250 HZ
INJECTED CURRENT TIME
TRIP
S.NO PHASE LV SIDE @ 250 HZ DELAY
HV SIDE @ 50 HZ LED
(PICK UP)
1 R 1 A0 @ 50 HZ 0.289A0 @ 250 HZ DIFF
1 A-120 @ 50 HZ 0.289A-120 @ 250 HZ
72.3 ms A,B,C-PH
2 Y
TRIP
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Report No: TATA POWER/110/11KV/BAY-UNIT-4/P642-87GT
3 B 1 A-120 @ 50 HZ 0.289A-120 @ 250 HZ
Operated value
5th Harmonics in percentage = ------------------------------------------ 100
Injected sec F.L load current value
0.289
=-------------------- 100
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Report No: TATA POWER/110/11KV/BAY-UNIT-4/P642-87GT
1
=28.9%
6) OVER CURRENT :
SETTINGS:
I>3 Type :DT
I>3Set : 10 A
Time delay : 0.02 Sec
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Report No: TATA POWER/110/11KV/BAY-UNIT-4/P642-87GT
INJECTED CURENT SOURCE-1 INJECTED CURENT SOURCE-1 FEEDBACK
TB1-23(A211) TB1-30(A221) TB4-1(S101)
TB1-24(A231) TB1-31(A241)
TB1-25(A251) TB1-32(A261) TB4-30(S159)
TB1-26(A271) TB1-33(A281)
R-PH Y-PH Y-PH
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Report No: TATA POWER/110/11KV/BAY-UNIT-4/P642-87GT
INJECTED 10 A 10 A 10 A
HV CURRENT
PICK UP 9.96 A 9.970A 9.966 A
TIME DELAY 82.40 ms 89.60 ms 84.30 ms
TRIP LED O/C OPTD O/C OPTD O/C OPTD
F/R POC>3 TRIP POC>3 TRIP POC>3 TRIP
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Report No: TATA POWER/110/11KV/BAY-UNIT-4/P642-87GT
TRIP RELAY 30XN2,86UA,86GA 30XN2,86UA,86GA 30XN2,86UA,86GA
7) EARTH FAULT :
SETTINGS:
IN2>3 Input : Derived
IN2>3 Types : DT
IN2>3Set : 10 A
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Report No: TATA POWER/110/11KV/BAY-UNIT-4/P642-87GT
Time delay : 0.02 SeC
INJECTED CURENT SOURCE-1 INJECTED CURENT SOURCE-1 FEEDBACK
TB1-23(A211) TB1-30(A221) TB4-1(S101)
TB1-24(A231) TB1-31(A241)
TB1-25(A251) TB1-32(A261) TB4-30(S159)
TB1-26(A271) TB1-33(A281)
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Report No: TATA POWER/110/11KV/BAY-UNIT-4/P642-87GT
R-PH Y-PH Y-PH
INJECTED 10 A 10 A 10 A
HV CURRENT
PICK UP 9.958 A 9.976 A 9.966 A
TIME DELAY 76.50 ms 77.7 ms 78.7 ms
TRIP LED E/F PROTN OPTD E/F PROTN OPTD E/F PROTN OPTD
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Report No: TATA POWER/110/11KV/BAY-UNIT-4/P642-87GT
F/R TRIP-N TRIP-N TRIP-N
IN>3 TRIP IN>3 TRIP IN>3 TRIP
TRIP RELAY 30XQ2,86UA,86GA 30XQ2,86UA,86GA 30XQ2,86UA,86GA
8) OVER FLUXING:
SETTING:
V/Hz Alm Status Enabled
V/Hz Alarm Set 1.050 PU
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Report No: TATA POWER/110/11KV/BAY-UNIT-4/P642-87GT
V/Hz Alarm Delay 10.00 s
V/Hz>1 StatusEnabled
V/Hz>1 Trip Func DT
V/Hz>1 Trip Set 1.100 PU
V/Hz>1 Delay 60.00 s
V/Hz>2 StatusEnabled
V/Hz>2 Trip Set 1.200 PU
V/Hz>2 Delay 3.000 s
V/Hz>3 StatusEnabled
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Report No: TATA POWER/110/11KV/BAY-UNIT-4/P642-87GT
V/Hz>3 Trip Set 1.300 PU
V/Hz>3 Delay 2.000 s
V/Hz>4 StatusEnabled
V/Hz>4 Trip Set 1.400 PU
V/Hz>4 Delay 1.000 s
VOLTAGE SOURCE FEEDBACK
TB1-39(E911) TB4-01(S101)
TB1-40(E931) TB4-33(S165)
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Report No: TATA POWER/110/11KV/BAY-UNIT-4/P642-87GT
OVER FLUXING :(ALARM)
INJECTED PICK MEASURE TIME TRIP LED TRIP F/R
VOLAGE UP V/HZ DELAY RELAY
66.69V 66.06V 1.050 PU 10 S - -
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Report No: TATA POWER/110/11KV/BAY-UNIT-4/P642-87GT
OVER FLUXING :(STAGE 1)
INJECTED PICK MEASURE TIME TRIP F/R
VOLAGE UP V/HZ DELAY RELAY
69.72V 69.86V 1.102 PU 10.07 S 30XQ1,86U V/HZ>1
A,86GA TRIP
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Report No: TATA POWER/110/11KV/BAY-UNIT-4/P642-87GT
OVER FLUXING :(STAGE 2)
INJECTED PICK MEASURE TIME TRIP LED TRIP F/R
VOLAGE UP V/HZ DELAY RELAY
76.2V 76.06 V 1.202 PU 3.076 S OVER 30XQ1,86U V/HZ>2
FLUX A,86GA TRIP
OPTD
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Report No: TATA POWER/110/11KV/BAY-UNIT-4/P642-87GT
OVER FLUXING :(STAGE 3)
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Report No: TATA POWER/110/11KV/BAY-UNIT-4/P642-87GT
INJECTED PICK MEASURE TIME TRIP LED TRIP F/R
VOLAGE UP V/HZ DELAY RELAY
82.56V 82.42V 1.302 PU 2.063 S OVER 30XQ1,86U V/HZ>3
FLUX A,86GA TRIP
OPTD
OVER FLUXING :(STAGE 4)
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Report No: TATA POWER/110/11KV/BAY-UNIT-4/P642-87GT
INJECTED PICK MEASURE TIME TRIP LED TRIP F/R
VOLAGE UP V/HZ DELAY RELAY
88.91V 88.73V 1.403 PU 1.064 S OVER 30XQ1,86U V/HZ>4
FLUX A,86GA TRIP
OPTD
LED ASSIGNMENT:
LED 1: OVER ALL DIFF OPTD
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Report No: TATA POWER/110/11KV/BAY-UNIT-4/P642-87GT
LED 2: OVER CURRENT OPTD
LED 3: EARTH FAULT OPTD
LED 4: GT SOURCE 1/2 FAIL
LED 5: WINDING TEMPERATURE HIGH ALARM
LED 6: OIL TEMPERATURE HIGH ALARM
LED 7: BUCHOLZ ALARM
LED 8: MOG ALARM
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Report No: TATA POWER/110/11KV/BAY-UNIT-4/P642-87GT
TEST RESULTS:
MEASUREMENT CHECKS FOUND OK
PROTECTION FUNCTION CHECKS FOUND OK
OUTPUT RELAY CHECKS FOUND OK
OPTO INPUT CHECKS FOUND OK
DISTURBANCE RECORDER
FOUND OK
TRIGGER
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Report No: TATA POWER/110/11KV/BAY-UNIT-4/P642-87GT
FAULT RECORDER FOUND OK
LED CHECK FOUND OK
WATCH DOG RELAY CHECK FOUND OK
COMMUNICATION FRONT FOUND OK
