11.4.2 Shore connection base load
The SHORE connection controller lets the ship use power from a land-based source, while topping up the power requirement by
running one or more generators in parallel. Enable this function under
Parameters > Local power management > Shore
connection base load
.
When
Shore connection base load
is enabled, then these alarms are not active:
•
SC-DG max. parallel time (in the SHORE connection controller)
•
DG-SC max. parallel time (in the GENSET controllers)
More information
See
Power management
,
Load sharing
,
SHORE connection base load
for more information.
11.4.3 Minimum load to close shore connection
The controller only attempts to close the shore connection if the load on the ship busbar is above the specified minimum load. The
shore connection breaker close sequence always checks the load as a percentage of the shore connection nominal power before
trying to close the shore connection breaker.
Configure this parameter under
Parameters > Local power management > Shore connection close load > Shore connection
breaker
.
Parameter
Range
Default Notes
Minimum load on ship
busbar
0 to 100 % of the shore
connection nominal power
5.0 %
The controller only attempts to close the shore connection
breaker if the load on the ship busbar is higher than this set
point.
Shore connection close load example
The nominal power of the shore connection is 480 kW and the
Minimum load on ship busbar
is 5 %
To close the shore connection breaker, the ship busbar load must be at least 24 kW.
11.4.4 Connect multiple shore connections
If multiple SHORE connection controllers are installed, then these can potentially connect at the same time. Use the following
parameter to determine how the multiple shore connections function.
Parameter
Configure the parameter under
Configure > Parameters > Power management rules > Configuration # > Shore connection >
Parallel
, where # is the power management rule number.
Parameter
Range
Default
Notes
Multiple shore
connections
allowed
•
Max. one SC may
connect
•
One close command
connects
corresponding SC
•
One close command
connects all SCs
Max. one
SC may
connect
Max. one SC may connect
: The power management system (PMS) does
not allow more than one shore connection breaker (SCB) to close at any
one time. If a command is given to close another SCB, the PMS must de-
load the first SCB, before opening it. Then the PMS synchronises the
system to the second SCB, before it closes.
One close command connects corresponding SC
: When there is a close
command for an SCB, the PMS closes that SCB. An operator can, for
example, use the push-button
Close breaker
on the display units of the
DESIGNER'S HANDBOOK 4189340911K UK
Page 390 of 521