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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 97
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
If the parameters
smax, df/dt, ts f and tp f are set correctly, a single adjusting command
f+ is sufficient in order to achieve the tolerance band, assuming that the governor is
functioning in a stable manner.
The matching procedures should be repeated and observed several times, starting from
different working points. If oscillations occur, the setting value df/dt should be increased
until no further oscillations occur. It is also possible to repeat the test function “TEST f-
Match“.
Checking the paralleling
At the end of commissioning, “blind“ synchronization should be carried out several times
(circuit breaker in Test position). The differential voltage and the paralleling command
should thereby be recorded using the transient recorder of the PC Tool
SynView
or
using an external transient recorder. At the same time, the synchronizing process should
be observed using the synchronizing instruments in the plant or, if these are not
installed, using the synchronizing instruments in
“SynView“
.
Bring circuit breaker to operating position, adjust voltage and frequency and carry out
“live“ synchronization. Record the synchronizing process.
Correct paralleling
dU = Voltage difference u1 – u2
S1 = Paralleling command
(channel 1)
S2 = Paralleling command release
(channel 2)
S3 = Paralleling command of the
system (channel 1 AND
channel 2)
a = Phase difference angle at the
instant of the paralleling
command (channel 1)
s = Slip at the instant of the
paralleling command
(channel 1)
t =
Last recording stored in
SYNCHROTACT
t-1 = Second last recording stored
in SYNCHROTACT
t-2 = Third last recording stored in
SYNCHROTACT