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Qatar Power Transmission System Expansion Phase VIII Substations – Package S-2-2Contract GTC/144B/2006

Site Acceptance Test Report C +T differential protection relay –Areva MICOM P543 Bay Ref: B__1+RP1

ANNEXURE 2 – TEST FORMS FOR TEST RESULTS

Front Plate Information

Current differential protection relay MiCOM P543 – B_1 – F873

Model number P54321AB7M0520K

Serial number

Rated current In 1A

Frequency 50 Hz

Auxiliary Voltage Vx 110V DC

Software Reference P543_ _ _ _7_ _ 520_6

General inspection Item Description SAT Remarks

1Visual inspection of the relay (no physical

damages or defects noted)

2 Connections as per approved drawings verified

3Serial number of relay matches serial number on

printed label on case

4 Rating information correct for installation

5 Case earth installed

IISA / SIEMENS LI KAHRAMAA

Signature Signature Signature

Name Predrag Kukavica Name Name

Date Date Date

Doc.No. PH8-4B-10-36-P105 Rev A ANNEX-2 of 13



1a. Local End Relay

CT rated primary current set as : 2500 A

CT rated secondary current set as : 1 A

Ignd-CT rated primary current set as : 2500 A

Ignd-CT rated secondary current set as : 1A

CT Polarity : Standard

CT Correction Factor set as : 1.0

1b. Remote End Relay

CT rated primary current set as : 400 A

CT rated secondary current set as : 1 A

Rated primary voltage set as : 66 kV

CT Polarity : Standard

CT Correction Factor set as : 1.0

1c. In Zone Transformer

In Zone Transformer Nominal Voltage (HV) : 66 kV

In Zone Transformer Nominal Voltage (LV) : 11 kV

In Zone Transformer Vector Group : Yd1

In Zone Transformer rated Apparent Power : 40MVA

In Zone Transformer HV side Load Current : I prim=350A, Isec=0.875A

In Zone Transformer LV side Load Current : I prim=2101A, Isec=0.84A

For testing purpose B__1 feeder kept as local end relay and B__1 as remote end relay.

Relay Address:

Local End Relay : 1-B

Remote End Relay : 1-A




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2. MEASURED VALUE TEST:

2a. Inject current in the relay as per the table below and observe the reading on the relay display, in secondary values and in primary values.

Phase injectedCurrent injected(Amps)

Primary current read on relay display in Amp

IR IY IB I0

R-E 1

Y-E 1

B-E 1

R-Y 1

Y-B 1

B-R 1

R-Y-B 1

EXPECTED VALUES

Phase injectedCurrent injected(Amps)

Primary current read on relay display in Amp

IR IY IB I0

R-E 1 2475-2525 0 0 820 - 855

Y-E 1 0 2475-2525 0 820 - 855

B-E 1 0 0 2475-2525 820 - 855

R-Y 1 2475-2525 2475-2525 0 0

Y-B 1 0 2475-2525 2475-2525 0

B-R 1 2475-2525 0 2475-2525 0

R-Y-B 1 2475-2525 2475-2525 2475-2525 0




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3a. PICKUP TEST

Settings: IS1 = 300mAk1 = 40% =0.4CT Corr. Factor Loc. = 1.19

Fault Type

Calculated Pickup(mA)

Expected Pickup(mA) Actual

Pickup(mA)

Expected Trip Time(ms)

Actual Trip Time

in m-sec at 2 x I Pickup

Min Max

R-E 315.0 283 347 ≤60.0

Y-E 315.0 283 347 ≤60.0

B-E 315.0 283 347 ≤60.0

R-Y 315.0 283 347 ≤60.0

Y-B 315.0 283 347 ≤60.0

B-R 315.0 283 347 ≤60.0

R-Y-B 315.0 283 347 ≤60.0

* = correction factor is applicable when transformer is in protection zone.Note: Additional delay (5-15ms) for closing of BO in relay and pickup of BI in OMICRON should be added to the total value.

Expected Value of operate current is Idiff >[ IS1 + [Ibias x k1)] pu] /CT Corr. Factor Loc. +/- 10%

Single end fed fault with no load, but with fault current IIdiff = IIbias = ½ IIdiff > IS1 / (1 - 0.5 k1)* CT Corr. Factor Loc.

Ph-E expected PU = 315 mAPh-Ph expected PU = 315 mA3Ph expected PU = 315 mA




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3b. BIAS CHARACTERISTIC TEST:3.b.1: LOWER SLOPE

Settings: Is1 =0.3A = 300mA k1 =40% = 0.4

Is2 =2600mA = 2.60ACT Corr. Factor Loc. = 1.19

Injected current for forming bias current

Differential Current [A]Secondary values

Expected Value(mA)

Slope [%]

K1 claclulated

K1 expectedPhase

Magnitude[A]1.0

Bias current [measured]

PhaseMagnitude

[mA]Min

Max

R 1.0 Y 406 496 36-44

Y 1.0 R 406 496 36-44

B 1.0 B 406 496 36-44

* =CT correction factor is applicable when transformer is in protection zone.Ibias = 0.5AK1(phaseB)=(Idiff(phase B)- IS1/CT corr. Fact)/Ibias +/- 10%

3.b.1: UPPER SLOPESettings: Is1=0.3A = 300mA

k1=40% = 0.4k2=80% = 0.8Is2=2.60A = 2.60ACT Corr. Factor Loc. = 1.19

Injected current for forming bias current

Differential Current [A]Expected Value

(mA)Slope [%]

K1 claclulated

K1 expectedPhase

Magnitude[A]1.0

Bias current [measured]

Phase Magnitude Min Max

R 6.0 Y 1.671 1.871 72-88

Y 6.0 R 1.671 1.871 72-88

B 6.0 B 1.671 1.871 72-88

* =CT correction factor is applicable when transformer is in protection zone.Ibias = 0.5AK1(phaseB)=(Idiff(phase B)- (IS1 -0.4*Is2) /CT corr. Fact /(Ibias - Is2 /CT corr. Fact) +/- 10%




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3d. Harmonic RestraintSettings: Inrush Restraint = Enable

I>2nd Harmonic = 10%Transformer compensation to be enabled at Both relays.Inject 1A current, first with harmonic content less than setting, then with harmonic content greater than setting; verify Differential Protection operation / blocking2nd Harmonic Restraint:Phase in which current injected

Current injected(Amps)

2nd Harmonic Content

(%)

TRIP / BLOCK

TRIP / BLOCK

(Expected)

2nd Harmonic Content

(%)

TRIP / BLOCK

TRIP / BLOCK

(Expected)

R-E 1.0 0.24 TRIP 0.26 BLOCK

Y-E 1.0 0.24 TRIP 0.26 BLOCK

B-E 1.0 0.24 TRIP 0.26 BLOCK

R-Y-B 1.0 0.24 TRIP 0.26 BLOCK

Expected value = ((1-IS1*Corr Fact/0.4)-1)/5.657Cross blocking 2nd Hramonic : 3e. Stability Test:3e.1: External through fault: current of 0.875A on remote end (HV) and 0.84A on local end (LV) with 150 0

phase shift between the two currents. The differential and restraining currents are observed in both the relays.Fault Type

Local End Relay Remote End RelayR Y B R Y B

R-Y-BI diff %

I rest %

Expected valuesFault Type


R-Y-BI diff % ≤105 ≤105 ≤105 ≤17 ≤17 ≤17

I rest % 2005-2210 2005-2210 2005-2210 315-375 315-375 315-375

3e.2: Internal fault: current of 0.875A on remote end (HV) and 0.84A on local end (LV) with -30 0 phase shift between the two currents. The differential and restraining currents are observed in both the relays.Fault Type


R-Y-BI diff %

I rest %



R-Y-BI diff % 4000-4400 4000-4400 4000-4400 630-770 630-770 630-770

I rest % 2005-2210 2005-2210 2005-2210 315-375 315-375 315-375




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3e.3: External through fault: current of 0.875A on remote end (HV) in phase R and 0.485A in phases R and Y on local end (LV) with 1800 phase shift between R(HV) and R(LV). The differential and restraining currents are observed in both the relays.Fault Type


R-EI diff %

I rest %



R-EI diff % ≤105 ≤105 ≤105 ≤20 ≤20 ≤20

I rest % 1150-1350 1150-1350 ≤105 180-220 180-220 ≤20

3e.4: External through fault: current of 0.875A on remote end (HV) in phase Y and 0.485A in phases Y and B on local end (LV) with 1800 phase shift between Y(HV) and Y(LV). The differential and restraining currents are observed in both the relays.Fault Type


Y-EI diff %

I rest %



Y-EI diff % ≤105 ≤105 ≤105 ≤20 ≤20 ≤20

I rest % ≤105 1150-1350 1150-1350 ≤20 180-220 180-220

3e.5: External through fault: current of 0.875A on remote end (HV) in phase B and 0.485A in phases B and R on local end (LV) with 1800 phase shift between B(HV) and B(LV). The differential and restraining currents are observed in both the relays.Fault Type


B-EI diff %

I rest %



B-EI diff % ≤105 ≤105 ≤105 ≤20 ≤20 ≤20

I rest % 1150-1350 ≤105 1150-1350 180-220 180-220 180-220




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3e.6: External through fault: current of 0.875A on remote end (HV) in phases R and Y, while injecting 0.485A in phases R and B on local end (LV) and 0.970 in phase Y with 180 0 phase shift between R(HV) and R(LV). The differential and restraining currents are observed in both the relays.Fault Type


R-YI diff %

I rest %



R-YI diff % ≤105 ≤105 ≤105 ≤20 ≤20 ≤20

I rest % 1150-1350 2305-2545 1150-1350 180-220 360-440 180-220

3e.7: External through fault: current of 0.875A on remote end (HV) in phases Y and B, while injecting 0.485A in phases R and Y on local end (LV) and 0.970 in phase B with 1800 phase shift between Y(HV) and Y(LV). The differential and restraining currents are observed in both the relays.Fault Type


Y-BI diff %

I rest %



Y-BI diff % ≤105 ≤105 ≤105 ≤20 ≤20 ≤20

I rest % 1150-1350 1150-1350 2305-2545 180-220 180-220 360-440

3e.8: External through fault: current of 0.875A on remote end (HV) in phases B and R, while injecting 0.485A in phases Y and B on local end (LV) and 0.970 in phase R with 1800 phase shift between B(HV) and B(LV). The differential and restraining currents are observed in both the relays.Fault Type


B-RI diff %

I rest %



B-RI diff % ≤105 ≤105 ≤105 ≤20 ≤20 ≤20

I rest % 2305-2545 1150-1350 1150-1350 360-440 180-220 180-220




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4.Backup OVERCURRENT PROTECTION :

4a.Definite Time:Settings: I>2 Status : Enable

I>2 Function : DT

I>2 Directional : Non-Directional

I>2 Current Set (A) : 2

I>2 TMS (s) : 0.5

Phase *Expected Value of I2>ActualPickup

current(A)

I2> Actual Pickup current

(A)

*Expected Value of I2>Actual Drop Out current

(A)

I2> Actual

Drop Out current

(A)

*Expected Value of I2>Actual Trip

Time @ 2 x setting(msec)

I2> Actual Trip Time @ 2

x setting (msec)

Min Max Min Max

R 1.9 2.1 1.805 1.900 480 - 560

Y 1.9 2.1 1.805 1.900 480 - 560

B 1.9 2.1 1.805 1.900 480 - 560

*Accuracy:

Pick-up = Setting ±5%

Drop-off = 0.95 x Setting ±5%

DT operation = ±2% or 40ms whichever is greater




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4b.Inverse Time: 51-B/51N-B

Settings: I>1 Status : EnableI>1 Function : IEC S Inverse I>1 Directional : Non-DirectionalI>1Current Set (A) : 0.96I>1 TMS (s) : 1.00

4b.1 PickUp and DropOut characteristic test

Phase

*Expected Value ofActualPickup

current(A)

I1> Actual Pickup current

(A)

*Expected Value of Actual Drop Out

current(A)

I1> ActualDrop Out current

(A)

Min Max Min Max

R 0.912 1.008 0.867 0.958

Y 0.912 1.008 0.867 0.958

B 0.912 1.008 0.867 0.958

4b.2 IDMT time characteristic test

Phase Operating Time (s) @ 2 x Setting(1.92A)

Operating Time (s) @ 3 x Setting(2.88A)

Operating Time(s) @ 4 x Setting (3.84A)

Calculated *Expected Value

Measured Calculated *Expected Value

Measured Calculated *Expected Value

Measured

Min Max Min Max Min Max

R 10.3 9.7 10.9 6.3 5.9 6.7 4.98 4.7 5.3

Y 10.3 9.7 10.9 6.3 5.9 6.7 4.98 4.7 5.3

B 10.3 9.7 10.9 6.3 5.9 6.7 4.98 4.7 5.3

*Accuracy:

Minimum trip level of IDMT elements = 1.05 x Setting ±5%IDMT characteristic shape = ±5% or 40ms whichever is greater (under reference conditions)**

** Reference conditions: TMS=1, TD=1 and I> setting of 1A, accuracy operating range 2-20Is




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5.Thermal Overload Protection:

Settings: Characteristic : Single

Thermal Time Constant 1 : 135 min.

Thermal Overload Alarm : 90 %

Thermal Trip : 0.84

Current Injectedin Amp

*Expected Alarm Time in sec Actual Alarm Time

in sec

*Expected Trip Timein sec Actual Trip Time

in secMin Max Min Max

3.00 594 726 659 805

*Accuracy:

Pick-up Thermal alarm Calculated alarm time = ±10%**Thermal overload Calculated trip time = ±10%**




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6. Binary Input: AssignmentsBI 1 : Inter Trip Send Tested:BI 2 : Inter Trip Send from LV side Tested:BI 3 : CB A_80 Open Tested:BI 4 : CB A_80 Closed Tested:BI 5 : CB A_80 Test Tested:BI 6 : Test SW Tested:BI 7 : HMI Blocking Tested:BI 8 : Spare Tested:BI 9 : ESW A_81 Open Tested:BI 10 : ESW A_81 Closed Tested:BI 11 : Spare Tested:BI 12 : Spare Tested:BI 13 : Spare Tested:BI 14 : Spare Tested:BI 15 : Spare Tested:BI 16 : BI DC Fail Tested:

7. Binary Output: AssignmentsBO 1 : Trip to LVAC CB Tested:BO 2 : Trip to LVAC CB Tested:BO 3 : Trip to 86 LV Side Tested:BO 4 : HV CB Closed (BCU indic.) Tested:BO 5 : HV CB Closed (interlock) Tested:BO 6 : Spare Tested:BO 7 : Spare Tested:BO 8 : Trip to 86 LV Side Tested:BO 9 : Remote HV CB Open Trip to LV Side Tested:BO 10 : Spare Tested:BO 11 : Spare Tested:BO 12 : Spare Tested:BO 13 : Spare Tested:BO 14 : Spare Tested:

Live contact Tested:8. LED Indications: Assignments

8.a Indication LEDsLED 1 : Diff. Trip Tested:LED 2 : InterTrip Send Tested:LED 3 : InterTrip Received Tested:LED 4 : Diff Blocked Tested:LED 5 : Thermal Alarm Tested:LED 6 : Comm Fail Tested:LED 7 : Tested:LED 8 : Tested:




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8.b Function LEDsFunction

LEDsAssignment Tested

Function

LEDsAssignment Tested

LED 01 A_80 CB Open LED 06 A_80 CB Closed

LED 02 A_80 CB in Test LED 07 A_80 CB not in Test

LED 03 A_81 ESW in Open LED 08 A_81 ESW in Closed

LED 04 HV CB Open LED 09 HV CB Closed

LED 05 HV ESW Open LED 10 HV ESW Closed

9. Tripping of CB/Lockout Relay on 87-1 Differential Trip :________

10. Tripping of CB/Lockout Relay on BackUp O/C Trip :________

11. Diff. Prot. is blocked when the Comm. Channel (FO Link) Fails in local end :________

12. Differential function blocked when local end test switch in test position :________

13. Differential function blocked when remote end test switch in test position :________

14. Intertrip send on activation of binary input :________

15. Disturbance recorder functionality :________

16. Event log functionality :________

17. “Time sync” checked with SCS :________

Relay found healthy : Yes / No

18. Instruments used:

Sl No Description MakeEquipment

Sl No.Calibration

dateCalibration due date

1. Secondary Injection Kit OMICRON HD378Q

02.05.2010.

02.05.2011.

2. MultimeterFLUKE 179 891402131

27.05.2010.

27.05.2011.

3. Laptop DELL 520 - - -




Date Date Date


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