ABB Relion 650 Series Commissioning Manual page 77
Line differential protection
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Also See for Relion 650 Series:
- Technical manual (754 pages) ,
- Applications manual (382 pages) ,
- Commissioning manual (156 pages)
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1MRK 505 395-UEN Rev. G
1.
Set X1InFw, R1LIn, X1InRv, R1FInFw, R1FInRv, ArgLd, RLdOutFw, RLdOutRv, kLdRFw and
kLdRRv to values that are in accordance with the selectivity plan and the corresponding
operating characteristic is shown in Figure 15.
2.
Set OperationLdCh to On and set timers tP1, tP2, tW and tH to their default values.
3.
Enable the input signal REL1PH to detect the power swing in one of the three phases.
4.
The test points that are to be considered for the power swing detection are shown in Figure 15.
IEC18000100 V1 EN-US
Figure 15:
Where,
φ =
5.
Inject voltage in one of the three phases in accordance with the test point P1 by keeping
constant current in three phases throughout testing and maintaining rated voltage for other two
phases.
6.
Vary the faulty phase voltage to achieve the impedance at the test point P2. At this point,
observe that the output ZOUT is activated and then continue to inject for a duration greater
than tP1.
7.
Inject the faulty phase voltage to achieve the impedance at the test point P3. At this point,
observe that the outputs ZIN and START are activated. It indicates that power swing has been
detected.
8.
Inject the faulty phase voltage in accordance with the test point P1.
9.
At this condition, the outputs ZIN and ZOUT get deactivated and START signal will be
maintained for a set duration of tH.
10.
To detect consecutive power swings, repeat steps 5, 6,
START will be activated.
11.
Repeat step
12.
Repeat step
Line differential protection RED650
Commissioning manual
X1OutFw
X1InFw
X1InRv
X1OutRv
Proposed test points to detect power swing conditions
-1
tan
(X1InFw/R1LIn)
6
and inject before the expiration of timer tW. The output ZOUT will be activated.
7
after a set duration of tP2. The output ZIN will be activated.
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ZL
X
P3
P2
RLdInRv
RLdInFw
RLdOutFw
RLdOutRv
7
and 8. With this condition, the output
Testing functionality by secondary injection
j
R
P1
IEC18000100-2-en.vsdx
Section 9
71
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