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IdUnre
IDL1MAG
2nd and
5th
Harmonic
IDL1
AND
Cross Block
from L2 or L3
OpCrossBlock=On
IBIAS
TRIPUNREL1
STL1
TRIPRESL1
BLKHL1
en07000020.vsd
a
b
b>a
AND
Cross Block
to L2 or L3
AND
AND
AND
BLKUNRES
BLOCK
BLKRES
OR
1
INTFAULT
IEC07000020 V2 EN
Figure 55:
Generator differential logic diagram 1
Internal/
External
Fault
discrimin
ator
STL1
STL2
STL3
OR
AND
EXTFAULT
INTFAULT
TRNSSENS
TRNSUNR
en07000021.vsd
Constant
IBIAS
a
b
b>a
Neg.Seq. Diff
Current
Contributions
OpNegSeqDiff=On
AND
BLKNSSEN
BLKNSUNR
BLOCK
IEC07000021 V2 EN
Figure 56:
Generator differential logic diagram 2
1MRK502052-UEN B
Section 6
Differential protection
163
Technical manual
Содержание Relion REG670
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