InteliMains 210 Global Guide
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Image 5.17 Stopping sequence of power management
As shown above, the system load has decreased below the level defined by the stop condition – i.e. the load
reserve is over a limit given by the appropriate setpoint. Further explanation is provided in chapters
and
Relative power management (page 85)
The level is illustrated by the red dashed line. If the load reserve keeps over this limit for longer time than defined
by setpoint
#Next Engine Stop Delay (page 198)
, the next gen-set is actually requested to stop. Once the gen-set
is unloaded, the GCB breaker is opened. Please note the sum of nominal power of all gen-sets on the bus is
decreased by the nominal power of the stopped gen-set. The cooling sequence follows before the gen-set is
actually stopped. The gen-set is ready to be started if the system load increases again.
Absolute power management
The power management based on absolute load reserves can be successfully used in cases the load portions
are similar to the gen-set capacity or even bigger. The goal of the absolute reserve mode is to provide the same
load reserve all the time independently on how many gen-sets are currently running. The mode perfectly fits for
industrial plants with large loads.
The absolute power management guarantees adjustable load reserve in kW. This mode is active when
is set to ABS [kW] mode.
