IGS-NT-BC, SW Version 1.2.0,
©ComAp – January 2019
IGS-NT-BC-1.2.0 Reference Guide.PDF
19
H
INT
:
It is strictly recommended to operate all Bank Controllers and even all subordinated gen-set controllers in
AUT mode to allow all the function like power management to be performed to ensure the moste efficient
running of the system and run hours equalization across the whole installation.
N
OTE
:
If the wiring without the BCB is used the gen-sets are connected or synchronized to the common bus bar
(power line) directly like in the standard MINT application.
Active and Reactive Power control in the system with Bank Controller
N
OTE
:
The active and reactive power of the system is controlled by the Bank Controller (the gen-set controller just
take the equal portion of the power to ensure the equal load sharing and VAr sharing.
N
OTE
:
The power or PF control modes System Base load, System Base power factor, Import-Export, Import/Export
power factor can be used when the system is running in parallel operation to mains (
LBI: MCB feedback
is
active).
System Base load
Gen-set group is controlled on constant (or adjustable) power. The Baseload value can by changed by
setpoint or via analog input.
Important setpoints:
ProcessControl
:
#SysLdCtrlPtM
= BASELOAD;
#SysBaseload
;
SysBaseLdMode.
System Base power factor
Gen-set group is controlled in mains parallel to keep a constant (or adjustable) power factor.
Important setpoints:
ProcessControl
:
#SysPFCtrlPtM
= BASEPF;
#SysPwrFactor.
Import-Export
Gen-set group is controlled to keep constant (or adjustable) Import or Export value. The external controller
InteliMains NT must be connected on the CAN2 to control gen-set group kW I/E.
Important setpoints:
ProcessControl
:
#SysLdCtrlPtM
= LDSHARING
.
Import/Export power factor
Gen-set group is controlled to keep constant (or adjustable) Import or Export power factor.
Important setpoints:
ProcessControl
:
#SysLdCtrlPtM
= VSHARING
.
The external InteliMains NT controller
must be connected on the CAN2 to control gen-set group PF I/E.
Local Baseload
Selected gen-set from island or mains parallel running group can be loaded to constant
LocalBaseload
value. This bank with active function Local Baseload is taken out from load sharing and keeps the load of the
bank to be equal to the setpoint
ProcessControl: LocalBaseload
. The power of the bank is only reduced
when common group actual load is lower than this value, on the other hand is increased if the other banks
(gen-sets) running in loadsharing are not able to cover the load themselves. The gen-sets in the group will
try to match their
LocalBaseload
s (when more than one are put to local baseload) based on their controller
addresses, so the first limited would be the one with the highest CAN address.
Power management in system with Bank Controller
The Power management function in the system with Bank Controller decides how many banks and
subordinated gen-sets has to be running to cover the actual load and requested load reserve. On the top of it
the system ensures that the most efficient combination of the gen-sets (banks) to cover the load and
requested load reserve is running. The run hours equalization of particular gen-sets is also ensured.
The function is based on the load evaluation in order to provide enough of available running power. Since it
allows the system to start and stop gen-sets based on the load demand, it can vastly improve the system
