Power Factor and Reactive Power Controllers and Regulators

Description

This component represents a standard IEEE-type Power Factor and Reactive Power Controllers and Regulators (VAr/PF controllers) model. All input parameters are specified either in seconds (for time constants) or in per-unit/per-unit per second (for all other inputs). The external inputs and outputs are detailed below:

Inputs:

[VT/IT]: This input is a 3-element array and receives its data from the attached synchronous machine (provided that the machine is set to output this data). VT is the RMS terminal voltage. IT is the synchronous machine terminal current and is complex (i.e. has a real and imaginary component). The real component of IT is in phase with VT and the imaginary component of IT is in quadrature (lagging is positive) with VT.
Vref0: This input sets the nominal terminal voltage reference value for the voltage control loop.
PFref(norm): This input defines the target power factor when the controller operates in PF control mode. It is typically a per-unit (pu) value where positive values indicate lagging (underexcited) and negative values indicate leading (overexcited) power factors. The controller adjusts the excitation to maintain the specified PF relative to generator loading conditions.
Qref: This input defines the desired reactive power output of the generator when the controller is operating in Var control mode. The controller compares the measured reactive power with this reference and adjusts excitation to minimize the error, thereby achieving the target reactive power.

Outputs:

Vref: This output represents the adjusted terminal voltage reference produced by the VAr/PF controller. It typically serves as an input to the Automatic Voltage Regulator (AVR).
dVref: This output represents the incremental change or deviation applied to the voltage reference due to the PF or VAr control action..

Power Factor and Reactive Power Controller and Regulator Models

Power Factor and Reactive Power Controller and Regulator Transfer Functions

PSCAD References [39]

Input Parameters

ConfigurationConfiguration

Name for Identification	Text		Optional text parameter for identification of the component.

Status: 0-Initialize;1-Release	INTEGER	Variable	A variable name can be used. This variable controls the status of this VAr/PF controller.

Output Type?	Choice		Select from Total Vref, or Incremental Vref.

Var/pf Controller Type?	Choice		Select either None, pf Controller or Var Controller.

Voltage AdjusterVoltage Adjuster

NOTE: This category is enabled only when Output Type | Total Vref and Var/pf Controller Type | pf Controller or Var Controller are selected.

Voltage Adjuster Travel Time [Tslew]	REAL	Constant	Enter a value for the voltage adjuster travel time [s]..

Voltage Adjuster Pulse Generator Time On [Ton]	REAL	Constant	Enter a value for the voltage adjuster pulse generator time on [s]..

Voltage Adjuster Pulse Generator Time Off [Toff]	REAL	Constant	Enter a value for the voltage adjuster pulse generator time off [s].

Voltage Adjuster Bypass of Pulse Generator [VADJF]	Choice		Select from Inactive or Active.

Voltage Adjuster Maximum Output [VREFmax]	REAL	Constant	Enter a value for the voltage adjuster maximum output [pu].

Voltage Adjuster Minimum Output [VREFmin]	REAL	Constant	Enter a value for the voltage adjuster minimum output [pu].

pf Controller Type Ipf Controller Type I

NOTE: This category is enabled only when Output Type | Total Vref and Var/pf Controller Type | pf Controller are selected.

Power Factor Controller Normalized Reference Setpoint [PFREFnorm]	REAL	Constant	Enter a value for the power factor controller normalized reference setpoint [pu].

Power Factor Controller Minimum Terminal Current Limit [VITmin]	REAL	Constant	Enter a value for the power factor controller minimum terminal current limit [pu].

Power Factor Controller Maximum Terminal Voltage Limit [VVTmax]	REAL	Constant	Enter a value for the power factor controller maximum terminal voltage limit [pu].

Power Factor Controller Minimum Terminal Voltage Limit [VVTmin]	REAL	Constant	Enter a value for the power factor controller minimum terminal voltage limit [pu].

Power Factor Controller Deadband Magnitude [VPFC_BW]	REAL	Constant	Enter a value for the power factor controller deadband magnitude [pu].

Power Factor Controller Delay Time [TPFC]	REAL	Constant	Enter a value for the power factor controller delay time [s].

Var Controller Type IVar Controller Type I

NOTE: This category is enabled only when Output Type | Total Vref and Var/pf Controller Type | Var Controller are selected.

Var Controller Reference Setpoint [QREF]	REAL	Constant	Enter a value for the Var controller reference setpoint [pu].

Var Controller Minimum Terminal Current Limit [VITmin]	REAL	Constant	Enter a value for the Var controller minimum terminal current limit [pu].

Var Controller Maximum Terminal Voltage Limit [VVTmax]	REAL	Constant	Enter a value for the Var controller maximum terminal voltage limit [pu].

Var Controller Minimum Terminal Voltage Limit [VVTmin]	REAL	Constant	Enter a value for the Var controller minimum terminal voltage limit [pu].

Var Controller Deadband Magnitude [VVARC_BW]	REAL	Constant	Enter a value for the Var controller deadband magnitude [pu].

Var Controller Delay Time [TVARC]	REAL	Constant	Enter a value for the Var controller delay time [s].

pf Controller Type IIpf Controller Type II

NOTE: This category is enabled only when Output Type | Total Vref and Var/pf Controller Type | pf Controller are selected.

Power Factor Controller Normalized Reference Setpoint [PFREFnorm]	REAL	Constant	Enter a value for the power factor controller normalized reference setpoint [pu].

Power Factor Controller Minimum Terminal Current Limit [VITmin]	REAL	Constant	Enter a value for the power factor controller minimum terminal current limit [pu].

Power Factor Controller Maximum Terminal Voltage Limit [VVTmax]	REAL	Constant	Enter a value for the power factor controller maximum terminal voltage limit [pu].

Power Factor Controller Minimum Terminal Voltage Limit [VVTmin]	REAL	Constant	Enter a value for the power factor controller minimum terminal voltage limit [pu].

Power Factor Controller Proportional Gain [KPpf]	REAL	Constant	Enter a value for the power factor controller proportional gain [pu].

Power Factor Controller Integral Gain [KIpf]	REAL	Constant	Enter a value for the power factor controller integral gain [pu/s].

Power Factor Controller Output Limit [VPFLMT]	REAL	Constant	Enter a value for the power factor controller output limit [pu].

Var Controller Type IIVar Controller Type II

NOTE: This category is enabled only when Output Type | Total Vref and Var/pf Controller Type | Var Controller are selected.

Var Controller Reference Setpoint [QREF]	REAL	Constant	Enter a value for the Var controller reference setpoint [pu].

Var Controller Minimum Terminal Current Limit [VITmin]	REAL	Constant	Enter a value for the Var controller minimum terminal current limit [pu].

Var Controller Maximum Terminal Voltage Limit [VVTmax]	REAL	Constant	Enter a value for the Var controller maximum terminal voltage limit [pu].

Var Controller Minimum Terminal Voltage Limit [VVTmin]	REAL	Constant	Enter a value for the Var controller minimum terminal voltage limit [pu].

Var Controller Proportional Gain [KPvar]	REAL	Constant	Enter a value for the Var controller proportional gain [pu].

Var Controller Integral Gain [KIvar]	REAL	Constant	Enter a value for the Var controller integral gain [pu/s].

Var Controller Output Limit [VVARLMT]	REAL	Constant	Enter a value for the Var controller output limit [pu].