KBCH120 Relay Testing With F6150
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Transcript of KBCH120 Relay Testing With F6150
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Knowledge Is PowerSM
Apparatus Maintenance and Power Management for Energy Delivery
Brief Introduction for Automated Relay Testing
Kamin DaveApplication Engineer (Protective Relaying)
DOBLE ENGINEERING COMPANY
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Protection Relay Testing:
Testing of Differential Protection Relay type KBCH120
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Relay Details: KBCH120
Two Differential Protection relaysAutomatic calculation for TAP values based on CTRSettings for Transformer & CT vector group compensations 2nd Harmonic Blocking during inrush period due to point on wave switching
Inrush Gap Detection Criterion
5th Harmonic Blocking for Over excitation phenomenaInverse Time Over Excitation Trip Characteristic
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Relay Details: KBCH120MAKE : AREVAMODEL : KBCH120Relay Settings:Differential Element:
Rated MVA = 100HV = 220KVLV = 66KVTR VECTOR GROUP = YY0.CT CONNECTION = YYID> = 0.2PUTurn Point1 = 1.0PUID>> = 5.0PUSLP1 = 20% SLP2 = 80%In = 1A
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Relay Details: KBCH120MAKE : AREVAMODEL : KBCH120Relay Settings:Differential Element:
HV CT Ratio = 300/1ALV CT Ratio = 1200/1ACF1 = 1.14CF2 = 1.37HV Vector Correction = YY0LV Vector Correction = YY0
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Relay Details: KBCH120
FLC on TR Primary side:IFLC = (100*1000) / (1.7325*220)
= 262.36 AmpereFLC on TR Secondary side:
IFLC = (100*1000) / (1.7325*66)= 874.54 Ampere
CF1 = (1*300) / (262.36*1) = 1.14
CF2 = (1*1200) / (874.54*1) = 1.37
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Relay Characteristic: Dual Slope
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Relay Characteristic: Dual Slope
Idiff@SLP1 = (IBIAS)*(0.2) + (IS)
Idiff@SLP2 = (IS) + 0.2 + (Ibias - 1)*0.8
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Test Equipment
• Make : DOBLE
• Model : F6150
Software
• F6TesT Version 2.18-1028
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Knowledge Is PowerSM
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IA
IB
IC
I1
I2
I3
KBCH
Test Circuit:
Source Configurations:Six current sources
Winding 1 currents
Winding 2 currents
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• Pickup test for Winding1
• Pickup test for winding2
• Slope Characteristic test
Tests conducted:
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Winding Pickup Test
Use “RAMP” Module
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Winding Pickup Test:Pickup Test for Winding1 (WDG1):-Ipickup = (IS)*(1/CF1)
= (0.2)*0.8745= 0.1749A
Pickup Test for Winding2 (WDG2):-Ipickup = (IS)*(1/CF2)
= (0.2)*0.7287 = 0.1457A
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Winding Pickup Test:
How to Create Test Plan???
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Location Level
Add new Location or Double click on Existing Location
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Relay Level
Add new Relay or Double click on Existing Relay
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Right click on Mouse & Press “Append”& create New Testplan
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Double click on “New test Plan”
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Right click on “Mouse” & Press on “Append”& Create new Test Module
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Select “RAMP” Module from list
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Press on “OK” & Create New Test Definition
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Select “6 Currents (Right bank)”
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Press on “Yes”
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WDG1 current sources
Enter Expected Value = 0.175A
Enter “Action”details
Select “Trigger”
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Pickup Test: WDG1
Actual Test value = 0.197A
Click on “RUN”
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WDG2 current sources
Enter Expected Value = 0.165A
Enter “Action”details
Select “Trigger”
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Pickup Test: WDG2
Actual Test value = 0.167A
WDG2 current sources
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Slope Characteristic Test
Use “DiffChar” Module
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Slope Characteristic Test:
Star conn. Star conn.
IP Is
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How to Create Slope Characteristic???
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Click on “Add” & select “Differential”
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Select Bias current (Ibias) formula from list
Bias current Formula:Ibias = (IP+IS) / 2
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R
YY0 YY0
Star conn. Star conn.YY0
SoftwareConfiguration
Amplitude Compensation
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Click on “Pickup” Column & then after Click on “Modify”
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Enter Pickup settingSay; 0.2
Select IBias Vs Idiff
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Enter Slope 20% & 80% based on relay setting
SLP1=20%
SLP2=80%
How to AdjustSlope?
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Click on “Close”
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Right click on “Mouse”& click on “Append”
How to create New Test Module?
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How to create New Test Module?
Select “DiffChar” Module from list
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Double Click on Test Module & create New Test Definition
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Select characteristic from list
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Select elements
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Enter Max. Test current (i.e. 12A)
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Select Trigger (i.e. Open to Close)
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Select test points on curve
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click on Add Point to List
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Test Points are added for Test
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Right click on check box
Right Click on check box
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Click on “RUN”
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Red color shows Expected Curve & White color shows actual Curve
Test results
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DOBLE ENGINEERING COMPANY305-SAKAR, O.P. ROADNR. ABS TOWERVADODARA-390 015INDIA. Tel:- +91 265 655 77 15EMAIL ID:- [email protected]:- www.doble.com