InteliMains 210 Global Guide
81
Image 5.16 Start sequence of power management
As shown above, the load of the system has increased above the level defined by the start condition – i.e. the
load reserve is not sufficient as required by the appropriate setpoint. Further explanation is provided in chapters
Absolute power management (page 82) and Relative power management (page 85).
The level is illustrated by the green dashed line. If the load reserve keeps insufficient for longer time than defined
by the setpoint #Next Engine Start Delay (page 198), the next gen-set is actually started. The standard starting
sequence follows. Once the synchronization procedure is done, the GCB breaker is closed and the gen-set
power is ramping up. Once loaded, the system load reserve is raised and becomes sufficient again. Please note
the sum of nominal power of all gen-sets on the bus is increased by the nominal power of the additional gen-set.
Stopping sequence
As it is written above, the power management is based on the load evaluation in order to provide enough of
available running power. An additional gen-set stops when the load of the system drops below certain level to
avoid inefficient run of the gen-set. Following figure depicts the situation when a gen-set is requested to stop
due to the power management.
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