Woodward LS-5 v2 Series - Page 169

Permissive The unit acts as a synch check device.
The unit will not issue speed or
voltage bias commands to achieve
synchronization, but if synchronization
conditions are matched (frequency,
phase, voltage and phase angle), the
control will issue a breaker close
command.
Check Used for checking a synchronizer prior
to commissioning.
The control actively synchronizes
generator(s) by issuing speed and
voltage bias commands, but does not
issue a breaker closure command.
[Run] Normal operating mode. The control
actively synchronizes and issues
breaker closure commands.
Ctrl by LM The synchronization mode is
controlled by LogicsManager (12907,
12906 and 12908).
If none of these parameters is
enabled, the synchronization is
disabled.
If more than one of these parameters
is enabled, the following priority is
valid:
• 1. PERMISSIVE
• 2. CHECK
• 3. RUN
Notes
The device will still perform a dead
busbar closure if the conditions are
valid.
No access in the application mode
A05
.
Synchronization
In some applications it can be bene󰈡cial to switch on 1-phase synchronization even a
three phase measurement is maintained and con󰈡gured. In some application it can come
can come to slightly di󰈠erent phase angles due to di󰈠erent voltage amplitudes. This can
lead in the slipping frequency mode to di󰈣cult conditions.
The synchronization can be executed in single phase or three phase manner:
Single phase
The single phase synchronization is used if one of the following conditions are active
• System A voltage measurement if con󰈡gured to 1PH2W or 1PH3W (Parameter 1851)
• System B voltage measurement if con󰈡gured to 1PH2W or 1PH3W (Parameter 1853)
•
Synchronization is con󰈡gured as 1-phase (Parameter 8817)
Three phase
169LS-5 v2 Series37650
4 Con󰈡guration
4.4 Con󰈡gure Application
Released