ABB REL670 Installation And Commissioning Manual page 94
Line distance protection ied
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Also See for REL670:
- Product manual (150 pages) ,
- Operator's manual (120 pages) ,
- Commissioning manual (284 pages)
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Test point
11
12
13
5.1.1
5.1.2
86
Distance protection
Reach
Value
X
0.27 x (2 x X1
R
–0.57 x (2 x X1
X
0.5 x (2 x X1
R
0.5 x (2 x R1
X
0
R
RFPE
Measuring the operate limit of set values in cases without shaped load
encroachment characteristics (OperationLdCmp=off)
Procedure for phase to phase fault L1–L2.
1.
Subject the IED to healthy normal load conditions for at least two
seconds.
2.
Apply the fault condition and slowly decrease the measured imped-
ance to find the operating value of the phase-to-phase loop for zone
1 according to test point 1 in
sult of the measurement with the set value.
3.
Repeat
steps 1
to
2
to find the operating value for test point P2, P3 in
table
table 15
and the operating value for the phase-to-earth loop ac-
cording to test point P1, P2, P3 in table
Observe that the zone that is not tested has to be blocked and the zone that
is tested has to be released.
The procedure for phase to earth faults in L3 is the same as that described
for phase to phase faults except that
ferred to.
Note!
Test points 8 and 9 are intended to test the directional lines of impedance protection. Since di-
rectionality is a common function for all 5 measuring zones, it is only necessary to test points 6,
7, 8 and 9 once, in the forward direction (the largest reverse zone can be used to facilitate the
test) in order to test the accuracy of directionality (directional angles). Directional functionality
testing (trip inside, no-trip outside) should always be carried for all ZM zones set with direction-
ality (forward or reverse).
Measuring the operate time of distance protection zones
Procedure
1.
Subject the IED to healthy normal load conditions for at least two
seconds.
Comments
+X0
)
Exact: 0.8 x (2 x X1
set
set
+ X0
)
Exact: 0.8 x (2X1
set
set
90))
+ X0
)/3
set
set
+ R0
)/3
set
set
figure 26
and
table
table
figure 27
and
Verifying settings by secondary
+ X0
)/3
set
set
+ X0
)/(3 x tan(AngNegDir
set
set
15. Compare the re-
16.
table 16
should be re-
Chapter 11
injection
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