11.5.5.2
Completing the test
SEMOD175023-47 v4
Continue to test another function or end the test by changing the
TESTMODE
setting to
Off
. Restore
connections and settings to the original values, if changed for testing purposes.
11.6
Unbalance protection
GUID-5E075378-BE05-4C5F-AD92-568C2D84CCF1 v1
11.6.1
Shunt capacitor cascading failure protection SCCFPVOC
GUID-08928884-88E3-4A40-9B50-BDA5F1A451D9 v1
GUID-079BCF22-469C-42EA-B857-E28154EC13D9 v1
Prepare the IED for verification of settings outlined in Section
"Preparing the IED to verify settings"
11.6.1.1
Function revision history
GUID-D7C922F5-2C3F-40E2-8B7F-B42F12597971 v1
Document
revision
Product
revision
History
D
2.2.3
-
E
2.2.3
-
F
2.2.4
-
G
2.2.4
-
H
2.2.4
-
J
2.2.4
-
K
2.2.5
The harmonic restraint function changed to freeze the definite timers.
11.6.1.2
Verifying the signals and settings
GUID-E395E984-9995-4CE4-A13B-035F77BC035E v1
A shunt capacitor cascading failure protection SCCFPVOC function has the following modes of
operation:
•
Two step negative sequence voltage restrained over-current protection
•
Two step zero sequence voltage restrained over-current protection
Verification of negative sequence-based operation
GUID-4F1928D9-59DE-4422-8930-1FF332D2F5BE v1
1.
Set the following parameters:
•
Operation
=
ON
•
Operation1
=
ON
(
Step 1
)
•
CurrentInput
=
negSeq
•
VoltageInput
=
negSeq
•
I >
=
125% IBase
•
VDepFact1
=
(1-117)/I> = 0.064
2.
Values of the logical signals and the service values for SCCFPVOC are available on the local
HMI under:
Main menu/Tests/Function status/Unbalance protection/
CapBankCascadingFail(51V,2(I>/U<))/SCCFPVOC (51V, 2(I>/U<)):x,
where x = instance
number.
1MRK 511 403-UEN Rev. L
Section 11
Testing functionality by secondary injection
Bay control REC670
129
Commissioning manual
© 2017 - 2022 Hitachi Energy. All rights reserved
Содержание REC670
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