43.sel300g relay testing with f6150

Knowledge Is PowerSM

Apparatus Maintenance and Power Management for Energy Delivery

Brief Introduction for Automated Relay Testing

Kamin DaveManager – Marketing & Protection Applications

DOBLE ENGINEERING COMPANY, INDIA

kdave@doble.com

Protection Relay Testing:

Testing of Generator Protection Relay type SEL300G

Relay Details: SEL300G

Under & Over Voltage Protection (27/59)Negative sequence Protection (46)Reverse & Low Forward Power Protection (32)Over Excitation Protection (24)Over & Under Freq. Protection (81O/81U)Under Impedance Protection (21)Loss of Excitation Protection (40G)100% Stator E/F Protection (27TN/64G2)

Out of Step Protection (78)Voltage Restrained O/C Protection (51VR)Voltage Controlled O/C Protection (51VC)Rotor E/F Protection (64R)Breaker Failure ProtectionGenerator Differential Protection (87D)Ground differential Protection (87N)95% Stator E/F Protection (59GN/64G1)

Primary & Backup Protection

Rotor Earth Fault Protection

Characteristic plotted in F6TEST2.21 software for testing

Load Encroachment characteristic plotted

Zone2 Reach

Zone1 Reach

Select “D” from List

GCB Status Close Input

Breaker close input & VT fuse fail input

VT fuse fail Status Input

Characteristic selection

V/Hz Curve1

V/Hz Curve2

V/Hz Curve3

Selection of Curve

Set as a Low Forward Power threshold range

Set as a Reverse Power threshold range

Set as Reverse Power function

VT Fuse fail Input

Relay Details: SEL300GRelay Logic for Reverse Power Function

VT fuse fail Status Input

Offset reactance for Zone1

Offset reactance for Zone2

Directional Angle for Zone2

Relay Logic for Loss of Excitation Function

Enter Setting of NPS Threshold

Enter Time Dial Setting

Relay Details: SEL300GRelay Logic for Negative Sequence current Function

Select function “V”

Threshold value

Curve selection “C1”

VT fuse fail status input

K = 0.25Normal Inverse Curve

Select function “C”

Threshold value

Curve selection “C1”

VT fuse fail status input

K = 0.2Normal Inverse Curve

0-95% SEF

100% SEF

Under Freq. function

Test Equipment

• Make : DOBLE

• Model : F6150

Software

• F6TesT Version 2.21-1165

F6150 Connections:

CT ConnectionsPT Connections

SEL300 Connections:PT ConnectionsCT Connections

Connections of 4th Voltage for 100% SEF

Testing of Over Excitation Function (24)

Test Circuit: Over Excitation Function Test

Source Configurations:3V X 3I

CT Inputs

• Inverse Time Curve Test

Tests conducted:

Use “VFChar” Module for Characteristic Search Test

Curve3 selection

Enter Time Dial

Curve3 for Testing

Expected Curve

Actual Curve from relay

Phasor

Select “ABC” Fault for testing

Relay settings:V/Hz = 1PUCurve = 3Time Dial = 1

Testing of Reverse Power Function (32)

Reverse Power Protection (32R): Example1

Gen Set

TL Line

Healthy Prime-mover

Failed Prime-mover

Gen Set

TL Line

Healthy Prime-mover

Failed Prime-mover

Gen Set

CB1 CB3

TL LineMW

Failed Prime-mover

Active Power Import from Grid sources

GridMW

GD YTR1

Gen Set

Failed Prime-mover

Only Reactive Power Export to Loads

CB1 CB2

D YTR2

CB3 CB4

Test Circuit: Reverse Power Function Test

Source Configurations:3V X 3I

CT Inputs

• Pickup Test

• Time Test

Tests conducted:

Use “RAMP” Module for Pickup Test

Pickup Test @ Unity PF:

MW- MW

- MVAR

Watts = VA = 952.87W

- MVAR

MW- MW

IExpected = 1A

Pickup Test @ Unity PF:Vn = 110VIn = 5APF = 1 (Unity)PN = (1.7325*0.11*1000*5) = 952.87watts%PSet = 20% of PN

PSet = (952.87 * 20)/(PF*100) = 190.5wattsIExpected = (190.5)/(1.7325*0.11*1000*PF) = 1A

Enter Expected Value = 1A Enter “Action”details

Pickup

Actual Operating Values

IA@180o

Pickup Test @ 0.8 lag PF:

MW- MW

- MVAR

Watts = 762.3W

- MVAR

MW- MW

IExpected = 1.15A

VA = 952.87VA

Enter Expected Value = 1.15A Enter “Action”details

Pickup

IA@150o

Pickup Test @ 0.8 lead PF:

MW- MW

- MVAR

Watts = 762.3W

- MVAR

MW- MW

IExpected = 1.15AVA = 952.87VA

Enter Expected Value = 1.15A Enter “Action”details

Pickup

IA@210o

Use “SSIMUL” Module for Time Test

TExp = 200ms

TAct = 262ms

Testing of Loss of Excitation Function (40G)

Test Circuit: Field Failure Function Test

Source Configurations:3V & 3I

• Characteristic Search Test

• Characteristic Time Test

• RCA (MTA) Test

Tests conducted:

Use “ZChar” Module for Characteristic Search Test

Zone1 setting = 20.4Ohms

Show Phasors: fault voltage & current of “ABC” fault

Blue color shows expected characteristic and pink color shows actual tested characteristic

Click on Oscillograph: Shows, voltage & current waveform of “ABC” fault

Zone2 setting = 30.5OhmsOffset = -3.5 Ohms

Use “ZTime” Module for Characteristic Time Test

Results Table shows; Zone1 time is 0.1s & Zone2 time is 0.4s

SEL300G: Field Failure Function Testing

LED Indicator operated

Use “ZMTA” Module for Characteristic MTA (RCA) Test

Fault type “ABC” selected for testing

Angle Boundary (Theta1)

Angle Boundary (Theta2)

Testing of Negative Sequence Function (46)

Negative Sequence Protection (46)

+VE Seq. -VE Seq. Zero Seq.

Sequence Components

Gen Set

MWMVAR

Operate: I2Measure>I2Set

MVARMW

Gen Set3

Operate: I2Measure>I2Set

IR @ 0o

IY @ 120O

IB @ 240O

I2@120o

I3@240o

Test Circuit: Negative Phase Seq. Function Testing

Source Configurations:3I

Tests conducted:

Use “IChar” Module for Characteristic Search Test

Curve selection

Enter Time Dial

Inverse Curve for Testing

Blue color line shows “Expected curve” & Pink color line shows “Actual tested curve”

Phasors shows symmetrical componentsvalue (i.e. I1, I0 & I2)

Testing of Voltage Controlled Over Current Function (51VC)

Voltage Controlled over current function (51VC):

Normally Protection applied for Directly connected Generators where system voltage collapse drastically falls below set value (VSet) during faults.

Voltage Dependent Over Current Protection (51V)

51VC Y Y

D YCB2 3

CB2 3Motpro

F26.37 MVA11KVPF = 0.8, Xd”=36.4%, Xd’=26%Xd = 231%

1.5MVA, 11KV/0.415KV, %Z = 4.9%

I*/ [I>]

0.2 0.8

51V-Voltage Controlled

Vmeasured < VsetIpickup = (k*Iset)T = (0.14*T) / ((Ipickup)0.02-1)

Vmeasured > VsetIpickup = (Iset)T = (0.14*T) / ((Ipickup)0.02-1)

Test Circuit: Voltage Controlled O/C Function Testing

Tests conducted:

Curve selection

Enter Time Dial

Relay Settings:I> = 0.5*InCurve = C1Time Dial = 1V1 = 50VL-NV2 = 25VL-N

Characteristic created for testing

Relay Settings:I> = 0.5*InCurve = C1Time Dial = 1V1 = 50VL-NV2 = 25VL-N

Injected Voltage to relay

Display Phasors

Right click on check box to enable voltage O/P

Testing of Voltage Restrained Over Current Function (51VR)

Voltage Restrained over current function (51VR):

Normally Protection is applicable when Generator is connected to system through GT.

G GCB3

51VC Y Y

D YCB1 3

D YCB2 3

Motpro

Test Circuit: Voltage Restrained O/C Function Testing

I*/ [I>]

0.2 0.8

51V-Voltage restrained Vmeasured > Vset2Ipickup = (Iset)

Vmeasured < Vset1Ipickup = (k*Iset)

Vset1 < Vmeasured < Vset2

Slope region

Tests conducted:

Curve selection

Enter Time Dial

Relay Settings:I> = 1*InCurve = C1Time Dial = 1V1 = 50VL-NV2 = 25VL-N

Characteristic created for testing

Relay Settings:I> = 1*InCurve = C1Time Dial = 1V1 = 50VL-NV2 = 25VL-N

Injected Voltage to relay

Display Phasors

Right click on check box to enable voltage O/P

Testing of 0-95% Stator Earth Fault Function (64R1/59GN)

Stator Ground Fault Protection (59GN): Resistor Ground

Maximum Ground Fault Amps = (Line to Neutral Voltage)-------------------------------------

(NGR Resistance)

VLN = 21000/1.7325

100 Ohms, 10s

IFIF PTR = 21000/240V

CTR = 20/1A

Stator Ground Fault Protection (59GN): Impedance Ground (NGT)

VLN = 21000/1.7325KVPri = 21kVKVSec = 0.240kVKVA = 70KVA R = 0.913 Ohms Full Load current in Primary wdg = 3.33A Ground Fault Impedance = 3640.004 Ohms

Test Circuit: 0-95% SEF Function Testing

Source Configurations:4V

4th V@50Hz

• Pickup Test

• Time Test

Tests conducted:

4th Voltage used

Expected value = 5VActual value = 5.3V

Pickup Value = 5V

Action details for Voltage Ramp

Ground Fault condition

Display Phasor

Ground Fault condition

Display Waveforms (Analogue & Digital Channels)

4th Voltage

Actual trip time = 1s

Relay Output (Open to Close contact)

Testing of 100% Stator Earth Fault Function (64R2/27TN)

Stator Ground Fault Protection (27TN)

3rd HarmonicCurrent circulate

Stator Ground Fault Protection (27TN): 3RD

Harmonic Under Voltage Method3rd Harmonic Under voltage relay

3rd Harmonic Voltage at Neutral End reduced

3rd harmonic voltage dropBecause capacitanceIs shorted

Test Circuit: 100% SEF Function Test

Source Configurations:4V

4th V@150Hz

• Pickup Test

• Time Test

Tests conducted:

4th Voltage used @ 150Hz Freq.

Expected value = 1VActual value = 1.2V

Pickup Value = 1.2V

Action details for Voltage Ramp

Ground Fault condition close to Neutral

Actual trip time = 0.55s

SEL300G: 100%SEF Function Testing

Testing of Under Frequency Function (81UF)

Test Circuit: Under Freq. Function Test

• Pickup Test

• Time Test

Tests conducted:

Freq. of Voltage sources

Expected value = 48.5HzActual value = 48.498Hz

Pickup Value = 48.5Hz

Action details for Freq. Ramp

Under Frequency condition (48Hz Freq. for Voltage sources)

Actual trip time = 0.33s

Testing of Over Frequency Function (81O/F)

Test Circuit: Over Freq. Function Test

• Pickup Test

• Time Test

Tests conducted:

Freq. of Voltage sources

Expected value = 51HzActual value = 51.0002Hz

Pickup Value = 51.0002Hz

Action details for Freq. Ramp

Over Frequency condition (51Hz Freq. of Voltage sources)

Actual trip time = 93.9ms

SEL300G: 100%SEF Function Testing

Training to L&T Power at Doble Training Center

DOBLE ENGINEERING COMPANY2nd Floor Suvidhi Pride, Gorwa-Refinery RoadOpposite Shell Petrol PumpVADODARAINDIA. Cell:- +91 98980 55956EMAIL ID:- kdave@doble.comWebsite:- www.doble.com

43.sel300g relay testing with f6150

tl linecb1

15aenter action

tl linecb2

neutral end

negative sequence

characteristic

fault voltage

mover gen

Documents

229.testing of ycgf-11 with f6150-fieldfailure

safety relays ue 10 – ue 48 series - lc automation...

· web view... selection of distance relays, mho relay...

43 annual western protective relay conference · pdf...

power system simulator for testing protection relays and...

367b. testing of 7sa610 with f6150-distpro

ret670 relay testing with f6150

coaching the 4x100 relay - ustfcccax 100 relay we must...

auxiliary relay (contactor relay) j7kca series

relay relay - chint

motor protection relay - c&s electric limited protection...

original operating instructions safety relay with relay...

understanding electrical networks to enhance their...

relay-distance relay basics

f6150 user guide

sel-251-1 distribution relay phase overcurrent relay ... ·...

f6150-300shp technical data sheet - belimo

distance relay:->mho relay

top-technic - cdmecdme.com.cy/schrack/relays.pdf ·...

connection diagram relay ft1 - abb...title connection...