InteliMains
, SW version 3.2.0
InteliMains-NT-MCB-MGCB-3.2.0-Reference Guide.pdf,
©ComAp – April 2015
70
N
OTE
:
System starting sequences may be very different due to their complexity (i.e. gen-sets which do not
take part in power management, various nominal powers etc.). Each system should be considered
individually. Optional functions in absolute or relative Power management are:
- Running hours balancing (equalization)
– in absolute or relative pwr mgmnt
- Load demand (different size) engines swap
–
in absolute pwr mgmnt only
- Power management of two or more gen-set groups (bus tie support)
– in absolute or relative
power management
N
OTE
:
The parallel operation to the mains of multiple gen-sets requires use of the InteliMains controller. The
InteliMains controller supervises the mains. For further information, please refer to the
or newer version of the guide.
7.6.2.2.1 Starting sequence
As written above, the power management is based on the load evaluation in order to provide enough
of available running power. An additional gen-set starts when the load of the system raises above
certain level to keep the load reserve big enough. Following figure depicts the situation when
an additional gen-set is requested to join the already running gen-set(s) to the bus.
Power [kW]
Sum of available nominal
power
– running gen-sets
in PM
Total Load of
the system
Level to start another gen-set
Nom Pwr in PM - #LoadResStrtX
Nom G1
Time
Nom
G1+G2
Time
Gen 2
Ready
#NextStrt del
Start
Stabilization
Synchronization
GCB closed
Soft loading
Loaded
Running
Gen 1
BO Syst res OK
Figure:
Starting sequence
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 setpoint
Pwr management:
#LoadResStrt
.
Further explication is provided in chapters Absolute Power Management and Relative Power
Management
