ABB Relion 670 Series Commissioning Manual page 120
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
Test point
12
13
11.4.5.1
Measuring the operating limit of set values
Procedure:
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 26. 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 1 to 3 above to find the operating value for the phase-to-ground fault L3-G
according to figure
11.4.5.2
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
tPG .
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.
114
Reach
Value
X
0.5 x (2 x X1
+ X0
set
R
0.5 x (2 x R1
+ R0
set
X
0
R
RFPG
1
to
2
to find the operating value for test points 2, 3 in table26.
30
and table 27.
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 5
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).
29
and table
tPP .
1
to
2
to find the operating time for the phase-to-ground fault according to test
30
and table 27. 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
Comments
)/3
set
)/3
set
26
for zone 1. Compare the result of the measurement
1MRK 506 371-UUS E
GUID-02EE80DB-CE52-49F0-99C4-14FD84766009 v3
29
and
GUID-9AEFB83B-A343-4965-BB41-59062CC0DB5F v3
Line distance protection REL670
Commissioning manual
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