No. Information Data Class
(Type)
Type
_:5041:319 Sychr./Asycr.1:f dif.too large(f2>f1) SPS O
_:5041:320 Sychr./Asycr.1:f dif.too large(f2<f1) SPS O
_:5041:329 Sychr./Asycr.1:dfdiff/dt too large SPS O
_:5041:321 Sychr./Asycr.1:α dif.too large(α2>α1) SPS O
_:5041:322 Sychr./Asycr.1:α dif.too large(α2<α1) SPS O
_:5041:304 Sychr./Asycr.1:Max. time exceeded SPS O
_:5041:323 Sychr./Asycr.1:Setting error SPS O
Expanded Checks (df/dt and Smoothing of Oscillations)
When configuring the Expanded delta-f options function block, you can expand the synchronization checks
to include the following aspects:
•
Limitation of the frequency change rate
With this option, you can define additional upper limits for the rate of permissible requency difference
change. The release checks for both stage types take these additional upper limits into consideration.
Both activation (parameters (_:140) Limit dfdiff/dt for sync. op and (_:142) Limit
dfdiff/dt for asyn. op) and the upper limits (parameters (_:141) Max. value dfdiff/dt
syn and (_:143) Max. value dfdiff/dt asyn) for the frequency change rate are adjustable
selectively for synchronous and asynchronous conditions. Both stage types consider the frequency
change rate when issuing the release for switching and indicate when the rate is exceeded.
If you also activate the option to compensate for low-frequency oscillations (parameter (_:150)
Suppr. frequ. oscillations), the frequency change rate is stabilized in the presence of such oscil-
lations. Stabilization is in effect for asynchronous as well as synchronous operating modes.
8.4.9
Control Functions
8.4 Synchronization Function
SIPROTEC 5, Overcurrent Protection, Manual 1153
C53000-G5040-C017-8, Edition 07.2017
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