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Operating Instructions
SYN 5201/SYN 5202
Document No Art Part
Language Revision
page
abb
ABB Switzerland Ltd
3BHS109762 E01
en D 8
Template: CHIND Techn doc stand, A4 P de, R1.DOT; Filename: 3BHS109762E01 D.doc; Print: 12/6/2011 5:48:00 PM; Save: 12/1/2011 2:37:00 PM; CHIND No. 3BHS109763 ZAB D14 Rev. -; I-Q
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
U
max
s
s
max
max
U< U
max
s<s
max
<
max
&
CHK
RELEASE
s
|U1|
|U2|
+
-
s
U
t
sup
&
OR
t
pon
CMD
s
v
SYNCHROTACT 5
U+
U-
f+
f-
COMMAND
S99006
Matching
Monitoring of paralleling conditions
Measuring
Command
generation