ABB SYNCHROTACT 5 - Paralleling Functions

Operating Instructions SYN 5201/SYN 5202
Document No Art Part Language Revision page
abb
ABB Switzerland Ltd
3BHS109762 E01
en D 8
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2.2 Paralleling functions
The automatic paralleling process can basically be divided into four function blocks:
1. Measuring
2. Voltage and frequency matching
3. Monitoring of paralleling conditions
4. Paralleling command generation
In the following figure, the block circuit diagram of the basic paralleling functions of
SYNCHROTACT 5 is simplified and shows a single-channel configuration. The
individual functions are described more precisely in the following sections.
U1
U2
˜
˜
0
˜
˜
0
U+
U-
f+
f-
U
Umax
s
smax
max
U< Umax
s<smax
< max
&
CHK
RELEASE
s
|U1|
|U2|
+
-
s
U
tsup
&
OR
tpon
CMD
s v
SYNCHROTACT 5
U+
U-
f+
f-
COMMAND
S99006
Matching
Monitoring of paralleling conditions
Measuring
Command
generation