Siemens 6MD86 - Stage Synchronous;Asynchronous; Description

No. Information Data Class
(Type)
Type
_:5071:317 Synchrocheck 1:V dif.too large(V2>V1) SPS O
_:5071:318 Synchrocheck 1:V dif.too large(V2<V1) SPS O
_:5071:319 Synchrocheck 1:f dif.too large(f2>f1) SPS O
_:5071:320 Synchrocheck 1:f dif.too large(f2<f1) SPS O
_:5071:329 Synchrocheck 1:dfdiff/dt too large SPS O
_:5071:321 Synchrocheck 1:α dif.too large(α2>α1) SPS O
_:5071:322 Synchrocheck 1:α dif.too large(α2<α1) SPS O
_:5071:304 Synchrocheck 1:Max. time exceeded SPS O
_:5071:323 Synchrocheck 1:Setting error SPS O
Stage Synchronous/Asynchronous
Description
A distinction according to synchronous and asynchronous systems can be made with this type of stage.
If galvanically coupled systems are switched in parallel, synchronous systems are present. A typical character-
istic for synchronous systems is equality of frequency (Δf ≈ 0). If the frequency difference falls below the
setting value of the f-threshold ASYN<->SYN parameter, synchronous systems are to be assumed. If the
frequency difference exceeds the setting value of the f-threshold ASYN<->SYN parameter, asynchronous
systems are to be assumed. This status occurs in galvanically isolated systems, for example.
Both states have their own operating mode with its own closing conditions. Both operating modes can be
switched on and off separately (parameter Sync. operating mode and Async. operating mode). The
following combinations result from this:
Sync. operating mode
Async. operating
mode
Functionality
on on
If the frequency difference is below the threshold
value set f-threshold ASYN<->SYN the oper-
ating mode synchronous is active. In other cases,
the operating mode asynchronous is active.
off on
Regardless of the frequency difference and the
threshold value f-threshold ASYN<->SYN the
operating mode is exclusively active asynchro-
nously.
on off
If the frequency difference is below the threshold
value set f-threshold ASYN<->SYN, the oper-
ating mode synchronous is active. In other cases,
the stage is inactive, i.e. a switching release
cannot be issued.
off off
Both operating modes are deactivated. No activa-
tion release can be be given via these operating
modes either.
6.4.8
6.4.8.1
Control Functions
6.4 Synchronization Function
380 SIPROTEC 5, High-Voltage Bay Controller, Manual
C53000-G5040-C015-9, Edition 11.2017