Siemens 6MD85, Manual

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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
Stage Synchronous/Asynchronous with Balancing Commands
Description
With this stage type, a distinction by synchronous and asynchronous systems can be made.
Additionally, the stage provides the balancing commands for adjustment of the voltage and frequency (speed)
to the target conditions. The stage is used for automatic synchronization of generators. The stage has the
functionality of a 1-channel parallel switching function.
If galvanically coupled systems are switched in parallel, synchronous systems are present. A typical feature 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 separated systems, for example.
Both states have their own operating mode with own closing conditions. You can switch both operating
modes on and off separately (parameters
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 set
threshold value
f-threshold ASYN<->SYN
, the
synchronous operating mode is active. In other
cases, the asynchronous operating mode is active.
off on
Regardless of the frequency difference and the
threshold value
f-threshold ASYN<->SYN
, the
asynchronous operating mode is exclusively
active.
on off
If the frequency difference is below the set
threshold value
f-threshold ASYN<->SYN
, the
synchronous operating mode is active. In other
cases, the stage is inactive, that is, a switching
release cannot be issued.
off off
Both operating modes are deactivated. No closure
release can be given via these operating modes
either.
6.4.9
6.4.9.1
Control Functions
6.4 Synchronization Function
388 SIPROTEC 5, High-Voltage Bay Controller, Manual
C53000-G5040-C015-9, Edition 11.2017