ComAp InteliMains NT IM-NT-BB - Regulation Loops

InteliMains
NT
, SW version 3.2.0
InteliMains-NT-MCB-MGCB-3.2.0-Reference Guide.pdf, ©ComAp – April 2015
115
Off
SysAMFstrtDel
+ 0.5s
Time
Sys Start / Stop
On
MCB Close del
MCB feedback
Mains paramsOK
MCB opens on = MAINSFAIL
7.12 Regulation loops
There are following regulation loops built-in in the controller. All of them are PI type except angle loop,
which is P type.
FREQUENCY LOOP
The frequency loop is active in the following situations dependending on the
application. For more information see the table below.
APPLICATION
FREQ GAIN AND FREQ INT SETPOINTS ARE ACTIVE DURING:
MCB
reverse synchronization of the gen-set group back to the
mains
MGCB
forward or reverse synchronization of the gen-set group to
the mains
See also setpoints: Sync/Load ctrl:Freq gain and Sync/Load ctrl:Freq int
When the Sync/Load ctrl:Freq gain is set to zero, this control loop is switched
OFF.
ANGLE LOOP
The differential angle control loop is active during the synchronization (see
Frequency loop above) when the "near to zero" slip frequency has been
successfuly achieved and then the differential angle between bus and mains
voltage shall be controlled to the value adjusted by the
setpoint Sync/Load ctrl:BtoM AngleReq.
See also setpoint: Sync/Load ctrl:Angle Gain
LOAD CONTROL LOOP
This regulation loop is active if setpoint ProcessControl:SysLdCtrl PtM is set to
LDSHARING.
Requested power is regulated depending on the setting
of ProcessControl:MLoad ctrl PtM.
VOLTAGE LOOP
The Voltage loop is active in the following situations dependending on the
application. For more information see the table below.