ABB REL670 - Control and Supervision of the Bay; Single Line Diagram (SLD) Operation

93
Distance protection Chapter 11
Verifying settings by secondary
injection
Table 18: Test points for phase-phase loops L1–L2
Test point Value Comments
1 X=X1
R=0
2 X=X1
R=RIPP
3 X=0.85·X1set
4
5
R=RLdFw
6 X=0
R=RLdFw
7 X=0.8·RLdFw·tan(ArgDir)
R=0.8·RLdFw
0.85 1
2
3
X RFFwPP
R
⋅
=+
3
4
XRFFwPP=⋅
3
4
R
RFFwPP=⋅
X0.433RFFwPP
≈
⋅
Xtan()
R
LdFw ArgLd=⋅
X 0.577
R
LdFw
≈
⋅
X 0.214
R
LdFw
≈
−⋅