abb rel 5xx converter v1 enu

8/13/2019 Abb Rel 5xx Converter v1 Enu

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ABB REL5xx Converter.doc

Alectrix (Pty) Ltd, 26 October 2004 Page 1 of 6

ABB REL5xx Converter

1 Objective

The XRIO Converter function enables the user to easily enter the relay settings as used by the relay into the

OMICRON TU 2.0 software.

2 Principle of Operation/Limitations

Independent reactive and resistive reaches, line angles as well as trip times can be set for each earth andphase fault elements of the ABB REL 5xx range of relays. This results in the possibility to set independentresistive blinders and line angles for each zone and fault type as well as independent earth fault compensationfactors for each earth fault zone.

2.1 Tripping Characteristic - Phase to Phase Faults

The phase to phase fault characteristic is entered according to the diagram below. On the relay, the resistive

reaches (B and D) are set as loop resistances, as the relay treats the arc resistance portion of a faultimpedance separate to the line impedance portion of a fault impedance. As the OMICRON Test Universesoftware does not support this Separate Arc Resistance feature for phase faults, the resistive reach enteredin the OMICRON software needs to be divided by a factor of 2 to convert the loop resistance to a reachresistance. The converter performs this division automatically.

Points A, B, C and D in the above diagram are defined as follows:

A = X1PP; B= RFPP; C = -X1PP; D = -RFPP


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2.2 Tripping Characteristic - Phase to Earth Faults

The phase to earth fault characteristic for each zone is plotted in the loop impedance plane,i.e. Zloop = Vfault / Ifault:

A

B

A

B15

25

The converter assumes, that the earth fault characteristic will be tested in the loop impedance plane, i.e. nocompensation for the earth fault compensation factor needs to be made, as the earth return impedance isalready part of the loop impedance for an earth fault. The OMICRON Test Universe software supports suchtesting if the k factor in the Advance Distance Software is set to zero (or the Z0/Z1 factor is set to unity). If thek factor is set to zero the Separate Arc Resistance algorithm does not need to be enabled, in fact its settingdoes not affect the results in any way.

On the relay individual Z1 and Z0 impedances can be set for each zone. This results in individual line anglesand earth fault compensation factors settable for each zone. Plotting the earth fault characteristic in the loopimpedance plane has the one advantage that these individual line angles and earth fault compensation factorsare fully taken care of.

Points A and B in the above diagram are calculated and defined as follows:

A = 2/3*X1PE + 1/3*X0PE

B = RFPE

The angle of the resistive blinders is calculated as follows:

= ATAN ((2*X1PE + X0PE) / (2*R1PE + R0PE))


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2.3 General Fault Criterion Phase to Phase Faults (Only for REL511)

The characteristic for the General Fault Criterion (GFC) for phase to phase faults can be entered as shown inthe characteristic below. As for the phase to phase fault tripping characteristic, the resistive reaches set on therelay (RFPP and Rload) needs to be divided by 2 to allow for the separate arc resistance algorithm in therelay.

XFW = X1FwPP; XRV = X1RvPP

2.4 General Fault Criterion Phase to Earth Faults

The characteristic for the General Fault Criterion (GFC) for phase to earth faults can also be entered asshown in the characteristic above. As the earth fault characteristic is tested in the loop impedance plane (earthfault compensation factor kL in the Test Universe software is set to zero), the resistive reaches (RFPE andRload) can be entered as is. The reactive reaches of the characteristic are calculated as follows:

XFW = 2/3*X1FwPE + 1/3*X0FwPE

XRV = 2/3*X1RvPE + 1/3*X0RvPE


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3. Using the ABB REL5xx Converter

3.1. Start a new OMICRON Control Center (OCC) document (or Open an existing OCC document).3.2. Insert a new Test Object Manager (Inset / Test Object) (or Open the existing Test Object Manager3.3. Click on File/Import - Figure 11.3.4. Browse and select the ABB REL5xx Converter.3.5. Click on Open - Figure 12.3.6. Enter all necessary settings in the dialog displayed - Figure 21.3.7. Click on OK - Figure 22.

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Figure 1: Open and Import XRIO Converter


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Figure 2: Settings Dialogue for REL5xx


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In the Advanced Distance module the relay characteristics will be displayed as follows for phase to phasefaults and further below for phase to earth faults:

abb rel 5xx converter v1 enu

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