ABB Relion 670 Series Commissioning Manual page 132
Line distance protection
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Also See for Relion 670 Series:
- Technical manual (1432 pages) ,
- Technical reference manual (1232 pages) ,
- Applications manual (944 pages)
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Section 11
Testing functionality by secondary injection
1.
Subject the IED to healthy normal load conditions for at least two seconds.
2.
Apply the fault condition and slowly decrease the measured impedance to find the operating
value of the phase-to-phase fault for zone 1 according to test point 1 in figure
table 32. Compare the result of the measurement with the set value.
3.
Repeat steps
Observe that the zones that are not tested have to be blocked and the zone that is tested has
to be released.
4.
Repeat steps
to figure
11.4.8.2
Measuring the operating time of distance protection zones
Procedure:
1.
Subject the IED to healthy normal load conditions for at least two seconds.
2.
Apply the fault condition to find the operating time for the phase-to-phase fault according to
test point 10 in figure
with the setting
3.
Repeat steps
point 10 in figure
t1PG .
4.
Repeat steps
Observe that the zones that are not tested have to be blocked and the zone that is tested has
to be released.
11.4.8.3
Transient directional element
Since the transient directional element is operating in the time domain, based on an RL circuit
model, it expects that the input current signals have proper transitions going from healthy to
faulty state. This essentially means that the test equipment has to be able to generate currents
with a DC-component bridging the two states, without discontinuities, even when a pre-fault load
current is present. If not, the result of the test will not be valid.
11.4.8.4
Completing the test
continue to test another function or end the test by changing the
Restore connections and settings to their original values, if they were changed for testing
purposes.
126
1
to
2
to find the operating value for test points 2, 3 in table 32.
1
to
3
to find the operating value for the phase-to-ground fault C-G according
36
and table 33.
Test points 8, 9, 10 and 11 are intended to test the directional lines of
impedance protection. Since directionality is a common function for all six
measuring zones, it is only necessary to test points 8, 9, 10 and 11 once, in the
forward direction in order to test the accuracy of directionality (directional
angles). Directional functionality testing (trip inside, no-trip outside) should
always be made for all impedance zones set with directionality (forward or
reverse).
35
and table
t1PP .
1
to
2
to find the operating time for the phase-to-ground fault according to test
36
and table 33. Compare the result of the measurement with the setting
1
to
2
to find the operating time for all other used measuring zones.
© Copyright 2017 ABB. All rights reserved
32
for zone 1. Compare the result of the measurement
1MRK 506 371-UUS E
35
and
GUID-70AEC42A-9BC7-445A-AE21-2CEC0C3A79DC v3
GUID-401518F3-26DD-4994-80A1-DE94D51945E9 v1
GUID-7FA2EA27-B6E2-48AB-8D53-22425E322FFA v1
TESTMODE setting to Disabled .
Line distance protection REL670
Commissioning manual
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