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Section 10
Testing functionality by secondary injection
Circular characteristic
Set Operation to On always to check for performance of distance protection during testing.
Select type of earthing system by setting parameter SystemEarthing and set to either Compensated
or High impedance. Also, Select CharStartZ< to Circular and set OpLoadEnch to On. Set
Z1CircleStart, LineAng and ArgLd to default values. Also, set RLd such that its value is lower than
Z1CircleStart, that is, encroached into operating region.
Phase-to-phase fault
Test points that are to be considered for measurement accuracy of set impedance reach are shown
in
Figure 20
IEC15000433 V3 EN-US
Figure 20:
Table 22:
Test points for phase-to-phase fault in compensated and high impedance earthed systems
Test point R
Z1CircleStart/2 ∗ cos(LineAng)
P1
0.8 ∗ Z1CircleStart/2 ∗ cos(ArgLd)
P2
P3
RLd
- Z1CircleStart/2 ∗ cos(LineAng)
P4
- 0.8 ∗ Z1CircleStart/2 ∗ cos(ArgLd)
P5
P6
- RLd
0.8 ∗ Z1CircleStart/2 ∗ cos(ArgLd)
P7
- 0.8 ∗ Z1CircleStart/2 ∗ cos(ArgLd)
P8
86
and
Table
22.
jX
P8
P6
P5
P4
Proposed test points for phase-to-phase fault in compensated and high
impedance earthed systems
X
Z1CircleStart/2 ∗ sin(LineAng)
0.8 ∗ Z1CircleStart/2 ∗ sin(ArgLd)
0
- Z1CircleStart/2 ∗ sin(LineAng)
- 0.8 ∗ Z1CircleStart/2 ∗ sin(ArgLd)
0
- 0.8 ∗ Z1CircleStart/2 ∗ sin(ArgLd)
- 0.8 ∗ Z1CircleStart/2 ∗ sin(ArgLd)
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( )
( ) )
P1
Z1CircleStart
LineAng
ArgLd
P3
RLd
1MRK 506 377-UEN Rev. L
GUID-DD2271AE-CEE6-4EBC-98F1-08FB7EB122C3 v1
GUID-EA176A86-C14B-480D-955A-213D60AC676B v1
P2
R ( )
R ( ) )
( )
P7
IEC15000433-3-en.vsd
Comment
If 2I0 < I0MinOp
If 2I0 < I0MinOp
If 2I0 < I0MinOp
If 2I0 < I0MinOp
Railway application RER670
Commissioning manual
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