[dw_ctrl_ext_sync_device, 1, en_US]
Figure 6-95
Triggering an External Synchronization Device
The bay controller in bay x should switch the circuit breaker in bay x in synchrony. The synchronization check
is carried out in the central paralleling device 7VE6. In addition to the paralleling device, another central bay
controller ensures the switching of the correct measuring voltages and the routing of the CB close command
from the 7VE6 to the correct circuit breaker in bay x. The bay controller x provides the information to the
central bay controller via IEC61850-GOOSE.
The External synchronization is designed as a function block which can be used in the Circuit-breaker func-
tion group. The additional External synchronization function block integrates the external synchronization
into command processing, so that the corresponding feedback can be forwarded to the command source.
If a circuit-breaker close command with a synchronization requirement is present, the external synchroniza-
tion device is started. After successfully checking the synchronization conditions, the close command is issued
from the external synchronization device to the circuit breaker. If a circuit-breaker close command without
synchronization requirement is present, the circuit-breaker close command is issued directly from the Circuit-
breaker function group to the circuit breaker. Also, each circuit-breaker trip command is issued directly to the
circuit breaker.
In case of a failure of the external synchronization device, you can also close the circuit breaker directly
without considering the synchronization conditions.
Control Functions
6.4 Synchronization Function
SIPROTEC 5, High-Voltage Bay Controller, Manual 415
C53000-G5040-C015-9, Edition 11.2017
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