IdUnre
IDMAG_A
2nd and
5th
Harmonic
ID_A
AND
Cross Block
from B or C
OpCrossBlock=Yes
OR
NOT
IBIAS
TRIPUNRE_A
PU_A
TRIPRES_A
BLKH
ANSI07000020-3-en.vsd
a
b
b>a
AND
AND
AND
AND
BLKUNRES
BLOCK
BLKRES
Cross Block
To B or C
ANSI07000020 V3 EN
Figure 57:
Generator differential logic diagram 1.
Internal/
External
Fault
discrimin
ator
PU_A
PU_B
PU_C
OR
AND
EXTFAULT
INTFAULT
TRNSSENS
TRNSUNR
en07000021_ansi.vsd
Constant
IBIAS
a
b
b>a
Neg.Seq. Diff
Current
Contributions
OpNegSeqDiff=On
AND
BLKNSSEN
BLKNSUNR
BLOCK
ANSI07000021 V2 EN
Figure 58:
Generator differential logic diagram 2.
1MRK 502 048-UUS A
Section 6
Differential protection
147
Technical manual
Содержание 650 series
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