ComAp InteliMains NT IM-NT-BB - System PF Control Modes; Pf Imp;Exp; Pf Anext Imp;Exp; Automatic Mains Failure Function

InteliMains
NT
, SW version 3.2.0
InteliMains-NT-MCB-MGCB-3.2.0-Reference Guide.pdf, ©ComAp – April 2015
113
7.10 System PF control modes
System PF control modes are determined by setpoints ProcessControl:PF ctrl PtM and SysPFCtrl
PtM.
If ProcessControl:#SysPFCtrl PtM is set to BASEPF, then Gen-set group requested power factor is
not determined by InteliMains but it is given by setpoint ProcessControl:#SysPwrFactor regardless of
ProcessControl:PF ctrl PtM setting.
Import/Export PF control
Import/Export PF control with
external input
ProcessControl:#SysPwrFactor
IMP/EXP
ANEXT IMP/EXP
ProcessControl:
PF ctrl PtM
VSHARING
BASEPF
ProcessControl:
SysPFCtrl PtM
Requested gen-set
group power factor
on CAN bus
Figure: General schematic of system power factor control modes in gen-set group with InteliMains
Determination of actual value of requested gen-set group reactive power for various settings of
ProcessControl:PF ctrl PtM is shown in separate diagrams below. The block "f" represents the
function of calculation of Q from PF and P.
AI: MLC:I/E-Pm
Controller CTs
Process control:
I/E-Pm meas
Import PF
f -
+
AI: MPF:I/E-Qm
Controller CTs
Process control:
I/E-Qm meas
Qgen from CAN
7.10.1 PF IMP/EXP
Following diagram shows the way of
calculation of requested gen-set group
reactive power if ProcessControl:PF ctrl
PtM = PF IMP/EXP.
AI: MLC:I/E-Pm
Controller CTs
Process control:
I/E-Pm meas
AI: MPF:AnExI/E
f -
+
AI: MPF:I/E-Qm
Controller CTs
Process control:
I/E-Qm meas
Qgen from CAN
7.10.2 PF ANEXT IMP/EXP
Following diagram shows the way of
calculation of requested gen-set group
reactive power if ProcessControl:PF ctrl
PtM = PF ANEXT IMP/EXP.
7.11 Automatic Mains Failure function
InteliMains MCB or MGCB application contains complex AMF function. There are several setpoints
that allows user to adjust the function behavior. Detailed description is below.
When the Mains fail (Mains failure is determined based on existing fixed or custom
protections that are set to be Mains protect or Mains protect with Reset – for more
information on protection types please refer to the chapter Protections and Alarm
management) the system is started with adjustable delay (AMF setting:EmergStart
Mains fails
Delay for
System Start
System Start