Measuring The Operating Limit Of Set Values; Measuring The Operating Time Of Distance Protection Zones - ABB REG670 Commissioning Manual
Generator protection, relion 670 series
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Also See for REG670:
- Technical manual (1298 pages) ,
- Applications manual (780 pages) ,
- Commissioning manual (324 pages)
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Section 13
Testing functionality by secondary injection
13.4.3.1
13.4.3.2
144
Test point
Reach
Value
9
X
–0.8 x RLdFw
R
0.8 x RLdFw
10
X
0.17 x (2 x X1
R
-0.36 x (2 x X1
11
X
0.27 x (2 x X1
R
–0.57 x (2 x X1
12
X
0.5 x (2 x X1
R
0.5 x (2 x R1
13
X
0
R
RFPEZx
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
with the set value.
3.
Repeat steps
1
to
2
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
E according to figure
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).
Measuring the operating time of distance protection zones
Procedure:
Generator protection REG670 2.2 IEC and Injection equipment REX060, REX061, REX062
x tan(ArgDir=20°)
set
set
+ X0
)
set
set
+ X0
)
set
set
+X0
)
set
set
+ X0
)
set
set
+ X0
)/3
set
set
+ R0
)/3
set
set
44
and table 21. Compare the result of the measurement
to find the operating value for test points 2, 3 in table 21.
to find the operating value for the phase-to-earth fault L3-
45
and table 22.
1MRK 502 073-UEN A
Comments
Exact: 0.5 x (2 x X1
X0
)/3
set
set
Exact: 0.5 x (2X1
+ X0
)/(3 x
set
set
tan(AgNegDir=30°)
Exact: 0.8 x (2 x X1
+ X0
set
set
Exact: 0.8 x (2X1
+ X0
)/(3 x
set
set
tan(AgNegDir=30°)
GUID-24FEBCE7-3409-4204-AA15-A1E0A1605866 v3
GUID-70AEC42A-9BC7-445A-AE21-2CEC0C3A79DC v3
Commissioning manual
)/3
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