B11_7UT6 Relay Annex-1

SIEMENS CONSORTIUM EZ-SE-01/2009

SIEMENS AG SIEMENS LIMITED

FEEDING EZDAN AND INTERNATIONAL HOUSING GROUP PROJECT IN WUKAIR AREA

SAT Procedures and Test Forms for Transformer Differential protection relay

Client : KAHRAMAA, QATAR

Location : 66/11kV EZDAN-2 S/S

Feeder No. : B11 Designation : F871 (87T)

Make : SIEMENS Relay Version : V04.62.05

MLFB No. : 7UT6131-5EB92-1AA0-OS Sr. No. : 1004062850

Aux. Volts : 110 V DC Nominal Current : 1 A

1. CT & Transformer Data Setting:

CT rated primary current (Side 1) set as : 400A

CT rated secondary current (Side 1) set as : 1A

Rated primary voltage (Side 1) set as : 62.0kV

CT Star point (Side 1) set as : Towards Transformer

Transformer Winding Connection (Side 1) set as : D (Delta)

Transformer Star point of side-1 is : Isolated

CT rated primary current (Side 2) set as : 2500A

CT rated secondary current (Side 2) set as : 1A

Rated primary voltage (Side 2) set as : 11kV

CT Star point (Side 2) set as : Towards Transformer

Transformer Winding Connection (Side 2) set as : Y (Star)

Transformer Star point of side-2 is : Grounded

Vector Group Numeral (Side 2) set as : 1

Rated Apparent Power (Side 1) set as : 40MVA

Rated current: Side 1, HV = 372.49 / 400 = 0.931

Rated current: Side 2, LV = 2099.52 / 2500 = 0.839

Type of FaultReference Winding

(High Voltage)

Even VG numeral(0,2,4,6,8,10)

Odd VG numeral(1,3,5,7,9,11)

3-Phase 1 1 12-Phase 1 1 √3/2=0.866

1-Phaes with Io Elimination 3/2 = 1.5 3/2 = 1.5 √3=1.731-Phaes without Io 1 1 3/1+√3 = 1.1

SIEMENS ENERGOPROJEKT KAHRAMAA.Signature Signature Signature

Name Ashfaq Shaikh Name Sureshkumar T Name

Date 11.04.2011 Date 11.04.2011 Date

Doc.No. EZD-01-10-36-P014 Rev 0 Annex-1 Page 1 of 34





Elimination

2. MEASURED VALUE TEST: Inject current in the relay as per the table below. Observe the reading on the relay display in primary and secondary values on side-1 and side-2.

Side on

which Curren

t injecte

d

Phase in which current injected

Current injected(Amps)

Secondary current read on relay display in Amp

Primary current read on relay display in A / kA

IL1

(Amps)

IL2

(Amps)

IL3

(Amps)

3I0

(Amps)

IL1

(Amps)

IL2

(Amps)

IL3

(Amps)

3I0

(Amps)

Side 1 R-E 1.0 1.0 0.0 0.0 1.0 401 0.0 0.0 401

(HV) Y-E 1.0 0.0 1.0 0.0 1.0 0.0 399 0.0 400

B-E 1.0 0.0 0.0 1.0 1.0 0.0 0.0 400 399

R-Y 1.0 1.0 1.0 0.0 0.0 400 400 0.0 0.0

Y-B 1.0 0.0 1.0 1.0 0.0 0.0 400 400 0.0

B-R 1.0 1.0 0.0 1.0 0.0 400 0.0 400 0.0

R-Y-B 1.0 1.0 1.0 1.0 0.0 400 400 399 0.0

Side 2 R-E 1.0 1.0 0.0 0.0 1.0 2.49 0.0 0.0 2.49

(LV) Y-E 1.0 1.0 0.0 0.0 1.0 0.0 2.49 0.0 2.50

B-E 1.0 0.0 0.0 1.0 1.0 0.0 0.0 2.50 2.49

R-Y 1.0 1.0 1.0 0.0 0.0 2.50 2.50 0.0 0.0

Y-B 1.0 0.0 1.0 1.0 0.0 0.0 2.49 2.49 0.0

B-R 1.0 1.0 0.0 1.0 0.0 2.50 0.0 2.49 0.0

R-Y-B 1.0 1.0 1.0 1.0 0.0 2.50 2.50 2.50 0.0



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2. DIFFERENTIAL PROTECTION :3a. Setting for 87-1 Pick-Up = 0.20 x I/InO

T I-Diff> Time Delay setting = 0.00 sec

Expected Trip Current (HV, Phase – Neutral) = (87-2 setting) x 1.5Expected Trip Current (HV, Phase – Phase) = (87-2 setting) x 1.0Expected Trip Current (LV, Phase – Neutral) = (87-2 setting) x 1.732Expected Trip Current (LV, Phase – Phase) = (87-2 setting) x 0.866Expected Trip Current (LV Three Phase) = (87-2 setting) x 1.0Expected Pickup Current = 0.85 x Expected Trip CurrentExpected Dropout Current = 0.70 x Expected Trip CurrentIdiff Trip = Idiff>> set X Kvg X I tx rated / I ct primary



Date 11.04.2011 Date 11.04.2011 Date


Side on which Current injected


Expected Pickup Current

(mA)

Actual Pickup Current

(mA)

Expected Drop-

out Current

(mA)

Actual Drop-out Current

(mA)

Expected Trip

Current (mA)

Actual Trip

Current(mA)

Actual Trip

Time at 2xItrip

(msec)Side-1 R-E 158 158 130 130 186 185 33.50

(HV) Y-E 158 158 130 130 186 186 32.50

B-E 158 157 130 130 186 186 34.30

R-Y 158 158 130 131 186 186 36.50

Y-B 158 158 130 131 186 186 33.70

B-R 158 157 130 131 186 186 34.90

R-Y-B 158 157 130 131 186 185 37.10

Side-2 R-E 247 245 204 205 290 290 35.50

(LV) Y-E 247 246 204 204 290 290 34.70

B-E 247 246 204 204 290 290 32.50

R-Y 123 124 102 102 145 145 34.70

Y-B 123 123 102 102 145 145 34.70

B-R 123 123 102 102 145 145 34.70

R-Y-B 143 142 118 118 168 167 34.90





3b. Setting for 87-2 Pick-Up = 1.00 x I/InO T I-Diff>> Time Delay setting = 0.00 sec



Expected Pickup Current

(A)

Actual Pickup Current

(A)

Expected Drop-out Current

(A)

Actual Drop-out Current

(A)

Expected Trip

Current (A)

Actual Trip

Current(A)

Actual Trip Time at 2xItrip (msec)

Side 1 R-E 0.792 0.791 0.652 0.652 2.796 2.80 24.10

(HV) Y-E 0.792 0.792 0.652 0.652 2.796 2.80 22.10

B-E 0.792 0.792 0.652 0.652 2.796 2.80 22.40

R-Y 0.792 0.790 0.652 0.652 1.864 1.87 22.30

Y-B 0.792 0.791 0.652 0.652 1.864 1.87 24.90

B-R 0.792 0.791 0.652 0.652 1.864 1.87 23.50

R-Y-B 0.792 0.791 0.652 0.652 1.864 1.87 23.50

Side 2 R-E 1.235 1.234 1.017 1.010 1.453 1.453 23.40

(LV) Y-E 1.235 1.234 1.017 1.010 1.453 1.452 22.30

B-E 1.235 1.235 1.017 1.010 1.453 1.452 22.20

R-Y 0.618 0.618 0.509 0.509 0.727 0.727 23.70

Y-B 0.618 0.618 0.509 0.509 0.727 0.728 23.50

B-R 0.618 0.618 0.509 0.509 0.727 0.728 22.30

R-Y-B 0.714 0.713 0.588 0.587 0.840 0.839 22.30

Expected Trip Current (HV, Phase – Neutral) = (87-2 setting) x 1.5Expected Trip Current (HV, Phase – Phase) = (87-2 setting) x 1.0Expected Trip Current (LV, Phase – Neutral) = (87-2 setting) x 1.732Expected Trip Current (LV, Phase – Phase) = (87-2 setting) x 0.866Expected Trip Current (LV Three Phase) = (87-2 setting) x 1.0Expected Pickup Current = 0.85 x Expected Trip CurrentExpected Dropout Current = 0.70 x Expected Trip Current

Idiff Trip = Idiff>> set X Kvg X I tx rated / I ct primary



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3c. Settings for Bias Characteristics

Idiff>Set = 0.20I/InO Slope 1 Set = 0.25Base Point 1 Set = 0.00I/In Irest. Calculated Start Point of Slope 1 = 0.0 Idiff. Calculated Start Point of Slope 1 = 0.0

Slope 2 Set = 0.50 Base Point 2 Set = 2.00I/In Irest. Calculated Start Point of Slope 2 = 4.0 Idiff. Calculated Start Point of Slope 2 = 1.0

Idiff>>Set = 6.00I/InO

For test results please find omicron test kit results.



Date 11.04.2011 Date 11.04.2011 Date






Differential Operating Characteristic:

Test Object - Differential ParametersProtected Object: Protected Object: Transformer Vector Group: DY1

Winding/Leg Name:

Primary Secondary

Voltage: 62.00 kV 11.00 kVPower: 40.00 MVA 40.00 MVAStar point Grounding:

No Yes

Delta-connected CT:

No No

CT:Winding/Leg Name:

Primary Secondary

CT Current Prim: 400.00 A 2500.00 ACT Current Sec: 1.00 A 1.00 ACT Grounding: tow. Prot. Obj. tow. Prot. Obj.Gnd CT Prim Current:

200.00 A 800.00 A

Gnd CT Sec Current:

1.00 A 1.00 A

Gnd CT Grounding:

n/a n/a

Protection device: Reference

Winding: Primary

Ibias Calculation: ( |Ip| + |Is| ) / K1 (K1 = 1.00)

Zero Seq. Elimination:

IL-I0

Reference Current:

PO nominal current

Ground CT Used:No Disable Comb.

char.:No

tdiff>: 0.03 s



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Idiff>: 0.20 In tdiff>>: 0.03 s Idiff>>: 2.00 In ttol rel: 3.00 % Itol rel: 2.00 % ttol abs: 0.01 s Itol abs: 0.05 In

Test Module Name: OMICRON Diff Operating

CharacteristicVersion: 2.40

Test Start: 05-Dec-2010 15:03:55 Test End: 05-Dec-2010 15:05:35 User Name: Manager: Company:

Test Settings:.General Settings: Testing: Primary / Secondary Max. Test Time: 1.50 s Delay Time: 0.25 s Prefault: No Prefault current: 0.00 In Prefault time: 0.000 s Vout enabled: No Vout winding: Secondary GPS/IRIG-B enabled: No GPS/IRIG-B side: Primary

Test Results for Fault Location L1-E at Reference Side Primary

Ibias Idiff Nominal

Idiff Actual

Dev (rel) Dev (abs)

State Result

1.00 In 0.250 In 0.254 In 1.59 % 0.0040 In Tested Passed 2.00 In 0.500 In 0.496 In -0.84 % -0.0042

InTested Passed


InTested Passed

5.00 In 1.250 In 1.255 In 0.39 % 0.0049 In Tested Passed 6.00 In 1.500 In 1.503 In 0.17 % 0.0026 In Tested Passed 7.00 In 1.750 In 1.747 In -0.15 % -0.0027

InTested Passed

8.00 In 2.000 In 1.975 In -1.26 % -0.0251 In

Tested Passed

9.00 In 2.000 In 1.997 In -0.16 % -0.0031 In

Tested Passed



Date 11.04.2011 Date 11.04.2011 Date






Operating Characteristic DiagramIbias [In]1 2 3 4 5 6 7 8 9Idiff [In]0.000.250.500.751.001.251.501.752.00


Ibias Idiff Nominal

Idiff Actual

Dev (rel) Dev (abs)

State Result


InTested Passed



Date 11.04.2011 Date 11.04.2011 Date






3.00 In 0.750 In 0.746 In -0.59 % -0.0044 In

Tested Passed

4.00 In 1.000 In 0.986 In -1.39 % -0.0139 In

Tested Passed


InTested Passed


InTested Passed

9.00 In 2.000 In 1.991 In -0.47 % -0.0094 In

Tested Passed

Operating Characteristic DiagramIbias [In]1 2 3 4 5 6 7 8 9Idiff [In]0.000.250.500.751.001.251.501.752.00 SIEMENS ENERGOPROJEKT KAHRAMAA.Signature Signature Signature


Date 11.04.2011 Date 11.04.2011 Date







Ibias Idiff Nominal

Idiff Actual

Dev (rel) Dev (abs)

State Result

1.00 In 0.250 In 0.246 In -1.58 % -0.0039 In

Tested Passed

2.00 In 0.500 In 0.496 In -0.84 % -0.0042 In

Tested Passed


InTested Passed

5.00 In 1.250 In 1.245 In -0.39 % -0.0049 In

Tested Passed


InTested Passed

8.00 In 2.000 In 1.997 In -0.14 % -0.0028 In

Tested Passed

9.00 In 2.000 In 1.997 In -0.16 % -0.0031 In

Tested Passed



Date 11.04.2011 Date 11.04.2011 Date







Test Results for Fault Location L1-L2 at Reference Side Primary

Ibias Idiff Nominal

Idiff Actual

Dev (rel) Dev (abs)

State Result


InTested Passed

3.00 In 0.750 In 0.746 In -0.57 % -0.0043 In

Tested Passed


InTested Passed


InTested Passed



Date 11.04.2011 Date 11.04.2011 Date






8.00 In 2.000 In 1.991 In -0.47 % -0.0094 In

Tested Passed

9.00 In 2.000 In 1.991 In -0.47 % -0.0094 In

Tested Passed





Date 11.04.2011 Date 11.04.2011 Date






Ibias Idiff Nominal

Idiff Actual

Dev (rel) Dev (abs)

State Result


InTested Passed


InTested Passed


InTested Passed

7.00 In 1.750 In 1.991 In -0.47 % -0.0094 In

Tested Passed

8.00 In 2.000 In 1.991 In -0.47 % -0.0094 In

Tested Passed

9.00 In 2.000 In 1.991 In -0.47 % -0.0094 In

Tested Passed



Date 11.04.2011 Date 11.04.2011 Date








Ibias Idiff Nominal

Idiff Actual

Dev (rel) Dev (abs)

State Result

1.00 In 0.250 In 0.246 In -1.57 % -0.0039 In

Tested Passed


InTested Passed

4.00 In 1.000 In 0.996 In -0.45 % -0.0045 In

Tested Passed

5.00 In 1.250 In 1.245 In -0.37 % -0.0047 In

Tested Passed

6.00 In 1.500 In 1.767 In 0.99 % 0.0174 In Tested Passed 7.00 In 1.750 In 1.997 In -0.16 % -0.0031 Tested Passed



Date 11.04.2011 Date 11.04.2011 Date






In8.00 In 2.000 In 1.997 In -0.16 % -0.0031

InTested Passed

9.00 In 2.000 In 1.997 In -0.16 % -0.0031 In

Tested Passed


Test Results for Fault Location L1-L2-L3 at Reference Side Primary



Date 11.04.2011 Date 11.04.2011 Date






Ibias Idiff Nominal

Idiff Actual

Dev (rel) Dev (abs)

State Result

1.00 In 0.250 In 0.246 In -1.57 % -0.0039 In

Tested Passed

2.00 In 0.500 In 0.496 In -0.82 % -0.0041 In

Tested Passed

3.00 In 0.750 In 0.746 In -0.57 % -0.0043 In

Tested Passed

4.00 In 1.000 In 0.996 In -0.45 % -0.0045 In

Tested Passed

5.00 In 1.250 In 1.236 In -1.12 % -0.0140 In

Tested Passed

6.00 In 1.500 In 1.719 In -1.75 % -0.0306 In

Tested Passed

7.00 In 1.750 In 1.991 In -0.47 % -0.0094 In

Tested Passed

8.00 In 2.000 In 1.997 In -0.16 % -0.0031 In

Tested Passed

9.00 In 2.000 In 1.997 In -0.16 % -0.0031 In

Tested Passed



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3d. HARMONIC RESTRAINT:

Setting of 87-2nd Harmonic Content in I-DIFF = 10 %Setting of 87-nth Harmonic Restraint = 5.HarmonicSetting of 87-nth Harmonic Content in I-DIFF = 30 %

Inject current greater than 87-1 setting; first with harmonic content less than setting, then with harmonic content greater than setting; verify 87-1 operation / blocking

2nd Harmonic Restraint:




2nd

Harmonic Content

(%)

TRIP / BLOCK

2nd

Harmonic Content

(%)

TRIP / BLOCK

Side 1 R-E 1.0 9.0 Trip 11.0 Block(HV) Y-E 1.0 9.0 Trip 11.0 Block

B-E 1.0 9.0 Trip 11.0 BlockR-Y-B 1.0 9.0 Trip 11.0 Block

5th Harmonic Restraint:




nth (5th) Harmonic Content

(%)

TRIP / BLOCK

nth (5th) Harmonic Content

(%)

TRIP / BLOCK

Side 1 R-E 1.0 29.0 Trip 31.0 Block(HV) Y-E 1.0 29.0 Trip 31.0 Block

B-E 1.0 29.0 Trip 31.0 BlockR-Y-B 1.0 29.0 Trip 31.0 Block

Differential Harmonics Restraint Test:



Date 11.04.2011 Date 11.04.2011 Date






Test Object - Differential Parameters

Protected Object: Protected Object: Transformer Vector Group: DY1

Winding/Leg Name:

Primary Secondary

Voltage: 62.00 kV 11.00 kVPower: 40.00 MVA 40.00 MVAStarpoint Grounding:

No Yes

Delta-connected CT:

No No

CT:Winding/Leg Name:

Primary Secondary

CT Current Prim: 400.00 A 2500.00 ACT Current Sec: 1.00 A 1.00 ACT Grounding: tow. Prot. Obj. tow. Prot. Obj.Gnd CT Prim Current:

200.00 A 800.00 A

Gnd CT Sec Current:

1.00 A 1.00 A

Gnd CT Grounding:

n/a n/a

Protection device: Reference

Winding: Primary

Ibias Calculation: ( |Ip| + |Is| ) / K1 (K1 = 1.00)

Zero Seq. Elimination:

IL-I0

Reference Current:

PO nominal current

Ground CT Used:No Disable Comb.

char.:No

tdiff>: 0.03 s Idiff>: 0.20 In tdiff>>: 0.03 s Idiff>>: 2.00 In



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ttol rel: 3.00 % Itol rel: 2.00 % ttol abs: 0.01 s Itol abs: 0.05 In

Harmonic Settings: HR tol abs: 1.00 % HR tol rel: 3.00 %

Harmonic Order

Start point End point

Ixf/IdiffIdiff/In Ixf/IdiffIdiff/In5 30.00

%0.20 30.00

%2.00

2 10.00 %

0.20 10.00 %

2.00

Test Module Name: OMICRON Diff Harmonic

RestraintVersion: 2.40

Test Start: 05-Dec-2010 15:26:18 Test End: 05-Dec-2010 15:26:30 User Name: Manager: Company:

Test Settings: Testing: Primary Tested Harmonic: 2 Max. Test Time: 1.50 s Delay Time: 0.25 s Active Postfault: No Postfault Time: 0.04 s Vout enabled: No Vout winding: Primary

Test Results for Test phase L1-E at Reference Side Primary for 2. Harmonic

Idiff Ixf/Idiff Angle (Ixf,Idiff)

Trip State Result

1.00 I/In 9.00 % -120.0 ° Yes Tested Passed1.00 I/In 10.00 % -120.0 ° No Tested Passed1.00 I/In 11.00 % -120.0 ° No Tested Passed



Date 11.04.2011 Date 11.04.2011 Date






Harmonic Restraint Test PlaneI2f/Idiff [%]1 2 3 4 5 6 7 8 9 10 11Idiff/In [In]0.000.250.500.751.001.251.501.752.00



Trip State Result




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Trip State Result

1.00 I/In 9.00 % -120.0 ° Yes Tested Passed1.00 I/In 10.00 % -120.0 ° No Tested Passed



Date 11.04.2011 Date 11.04.2011 Date






1.00 I/In 11.00 % -120.0 ° No Tested Passed


Test Results for Test phase L1-L2-L3 at Reference Side Primary for 2. Harmonic



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Trip State Result





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Trip State Result




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Harmonic Restraint Test PlaneI5f/Idiff [%]5 10 15 20 25 30 35Idiff/In [In]0.000.250.500.751.001.251.501.752.00



Trip State Result

1.00 I/In 29.00 % -120.0 ° Yes Tested Passed1.00 I/In 30.00 % -120.0 ° Yes Tested Passed1.00 I/In 31.00 % -120.0 ° No Tested Passed



Date 11.04.2011 Date 11.04.2011 Date









Trip State Result

1.00 I/In 29.00 % -120.0 ° Yes Tested Passed1.00 I/In 30.00 % -120.0 ° Yes Tested Passed1.00 I/In 31.00 % -120.0 ° No Tested Passed



Date 11.04.2011 Date 11.04.2011 Date







Test Results for Test phase L1-L2-L3 at Reference Side Primary for 5. Harmonic


Trip State Result

1.00 I/In 29.00 % -120.0 ° Yes Tested Passed



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1.00 I/In 30.00 % -120.0 ° Yes Tested Passed1.00 I/In 31.00 % -120.0 ° No Tested Passed




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4. OVERCURRENT PROTECTION (HV Side-1):

Definite Time:50-1 Pickup Setting : 1.50 x I/InS (I/InS = Rated current of the transformer) 50-1 Delay Setting : 0.50 sec 50-2 Pickup Setting : 2.00 x I/InS 50-2 Delay Setting (s) : 0.00 sec

Phase 50-1Actual Pickup current

(A)

50-1 ActualDrop Out current

(A)

50-1 Actual Trip Time @ 2 x setting

(msec)

50-2 Actual Pickup current

(A)

50-2 Actual Drop out current

(A)

50-2 Actual Trip Time @ 2x setting

(msec)

R 1.396 1.337 543.6 1.860 1.789 24.20

Y 1.395 1.335 538.9 1.859 1.785 28.00

B 1.396 1.336 533.7 1.860 1.799 23.60

Inverse Time:IEC Curve : Very Inverse51 Pickup Setting 1.00 x I/InS 51 Time Dial Setting : 0.60 sec

Phase Actual Pickup current

Actual Drop out current

(A)

Operating Time (s) @ 2 x Setting

Operating Time (s) @ 5 x Setting

Operating Time(s) @ 10 x Setting

(A) Calculated Measured Calculated Measured Calculated Measured

R

Y

B

5. BINARY INPUTS : Assignments



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BI 1 : Spare Tested : Ok

BI 2 : Diff Relay Test Block in Test Mode Tested : Ok



BI 5 : Protection BI DC Supply Fail Tested : Ok

6. BINARY OUTPUTS :- Assignments

BO 1 : 87 Trip / 50-1 Trip Tested : 0.2Ω

BO 2 : Spare Tested : 0.2Ω







Life contact Tested : 0.2Ω



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7. LED INDICATORS:- Assignments

LED 1 : Differential Trip stage-1 Tested : Ok

LED 2 : Differential Trip stage-2 Tested : Ok

LED 3 : Differential Phase L1 Trip Tested : Ok



LED 6 : Differential Pickup Tested : Ok

LED 7 : TX O/C trip Tested : Ok

LED 8 : Overload Alarm Tested : Ok

LED 9 : Spare Tested : Ok




LED 13: Spare Tested : Ok




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8. Tripping of CB / Lockout Relay (K86A) on Diff. Trip : __Ok___

9. Tripping of CB / Lockout Relay (K86A) on over current Trip : __Ok___

10. Final Settings downloaded to relay after test : __Ok___

11. Test Switch TS871 operation checked (Block K86A) : __Ok___

Relay found healthy: Yes / No

12. Instruments Used:

Sl No Description MakeEquipment

Sl No.Calibration date

Calibration due date

1. Secondary Injection Kit

OMICRON GK016P 27/06/2010 27/06/2011

2. Multimeter FLUKE 179 13150185 23/08/2010 23/08/2011

3. Laptop HP SGH016T1GP --- ---



Date 11.04.2011 Date 11.04.2011 Date


B11_7UT6 Relay Annex-1

Documents

nominal current

lv re ye be ry yb br

trip current siemenssignature

expected pickup current

expected trip current

expected trip current

expected dropout current

primary current read