•
GENSET controllers C and D use
Power management rules 3
.
More information
See
CustomLogic
,
Advanced examples
in the
PICUS manual
for detailed information on how to configure this.
Power management rules and BUS TIE breaker controllers
You can configure power management rules in a BUS TIE breaker controller.
If the bus tie breaker is closed, the power management rules for the BUS TIE breaker controller are treated in the same way as the
power management rules for any other controller in the section.
If the bus tie breaker is open, the power management rules only apply to the section connected to Busbar A of the BUS TIE breaker
controller.
7.1.7 System power management
System power management parameters apply to the whole system. They are configured in the connected controller under
Configure > Parameters > System power management
. When you write changes to the connected controller, then the controller
automatically updates the system power management parameters in
all
the controllers in the system.
7.1.8 Parallel operation
Parallel operation is when two or more power sources supply power to the same busbar. The frequency and voltage of the power
sources must be synchronised in order for the breakers to close for parallel operation. The power sources may be the gensets, the
shaft generator, the shore connection and/or the emergency genset.
Rules for parallel operation
•
Gensets can run in parallel with each other indefinitely.
•
Generally, the shaft generator, shore connection and emergency genset run in parallel with the gensets for only the short time it
takes to switch between them, and not for extended periods.
•
Multiple shore connections can run in parallel with each other if multiple shore connections are enabled and they have the same
power source.
•
Shaft generators never run in parallel with each other if both are generating power.
•
Multiple shaft generators can be connected to the same busbar if power take home is active.
•
A shaft generator and a shore connection never run in parallel with each other.
◦
The
SC-SG parallel
alarm trips the shore connection breaker if this ever occurs.
•
The shaft generator can run in parallel with gensets indefinitely if a
Base load
control set point is used on the power from the
shaft generator.
•
The shore connection can run in parallel with gensets indefinitely if a
Base load
control set point is used on the power from the
shore connection.
More information
See
each [Controller type]
for more information on parallel operation alarms.
Emergency genset: Test function
During the emergency genset test, the emergency genset can be configured to run in parallel with the rest of the system for a limited
period. However, the emergency genset capacity is not included in the power management calculations while the test is running.
If a blackout occurs during an emergency genset test, the EMERGENCY genset controller ends the test immediately.
Emergency genset: Harbour operation
When harbour operation is active in the EMERGENCY genset controller, the emergency genset is treated as if it is an ordinary
genset, and can run in parallel with the other gensets indefinitely. During harbour operation, the EMERGENCY genset controller
must be in AUTO mode. The emergency genset capacity is included in the power management calculations.
DESIGNER'S HANDBOOK 4189340911K UK
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