Measuring The Operating Limit Of Set Values; Measuring The Operating Time Of Distance Protection Zones - ABB RELION REG670 Commissioning Manual
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Also See for RELION REG670:
- Technical manual (1298 pages) ,
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- Commissioning manual (324 pages)
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1MRK 502 067-UEN B
Test point
7
8
9
10
11
12
13
12.4.8.1
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
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
12.4.8.2
Measuring the operating time of distance protection zones
Procedure:
Commissioning manual
Reach
Value
X
0
R
RLdFw
set
X
–02143 x RLdFw
R
0.8 x RLdFw
set
X
–0.8 x RLdFw
set
tan(ArgDir=20°)
R
0.8 x RLdFw
set
X
0.17 x (2 x X1
set
R
-0.36 x (2 x X1
set
X
0.27 x (2 x X1
set
R
–0.57 x (2 x X1
set
X
0.5 x (2 x X1
set
R
0.5 x (2 x R1
set
X
0
R
RFPE
45
and table 29. Compare the result of the measurement with the set value.
1
to
2
to find the operating value for test points 2, 3 in table 29.
1
to
3
to find the operating value for the phase-to-earth fault L3-E according
46
and table 30.
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).
Comments
Exact: 0.8 x RFPE x tan (ArgDir=20°)
set
x
+ X0
)
Exact: 0.5 x (2 x X1
set
+ X0
)
Exact: 0.5 x (2X1
set
tan(AgNegDir=30°)
+X0
)
Exact: 0.8 x (2 x X1
set
+ X0
)
Exact: 0.8 x (2X1set + X0set)/(3 x
set
tan(AgNegDir=30°)
+ X0
)/3
set
+ R0
)/3
set
Testing functionality by secondary injection
X0
)/3
set
set
+ X0
)/(3 x
set
set
+ X0
)/3
set
set
GUID-24FEBCE7-3409-4204-AA15-A1E0A1605866 v3
GUID-70AEC42A-9BC7-445A-AE21-2CEC0C3A79DC v3
Section 12
125
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