Machine Model: REGC_A

 

Following checks and corrections are applied during Validation and AutoCorrection.

  • If LVPL1 < 0 then LVPL1 = 0.0 per unit. We will ignore all low voltage power logic and treat model as though Lvplsw = 0.
  • If Td < 4*TimeStep then Td = 4*TimeStep, and if Td > 0.2 then Td = 0.2

Model Equations and/or Block Diagrams

Parameters:

LVPLSW

LVPL Switch (enabled=1)

rrpwr

Real power current ramp rate limit, p.u.

brkpt

LVPL characteristic breakpoint voltage, p.u.

zerox

LVPL characteristic zero crossing voltage, p.u.

LVPL1

LVPL Maximum Current Breakpoint

VLim

Inside the network boundary equations, as voltages increases and reaches this threshold, additional reactive current is modeled to maintain an algebraic solution voltage at this threshold. This is intended to model very fast control that prevents over-voltage in this device.

LVPnt1

Inside the network boundary equations this is the voltage at which the real power current begins dropping from the controlled Ip value in the block diagram. LVPnt1 and LVpnt0 do not represent any control, but instead are part of the numerical calculation of the network boundary equations. Use LVPLSW=1 and parameters LVPL1, Xerox, Brkpt, and Tfltr to model low voltage current control. Or for more precision use the REEC_* models with appropriate piece-wise linear VDL curves.

LVPnt0

Inside the network boundary equations this is the voltage at which the real power current will fall to zero. LVPnt1 and LVpnt0 do not represent any control, but instead are part of the numerical calculation of the network boundary equations. Use LVPLSW=1 and parameters LVPL1, Xerox, Brkpt, and Tfltr to model low voltage current control. Or for more precision use the REEC_* models with appropriate piece-wise linear VDL curves.

Tg

Time Delay to represent how long it takes the renewable controller to achieve the desired current

Tfltr

LVPL Voltage sensor time constant

Iqrmax

Reactive current recovery positive rate limit (set to zero or negative value to disable)

Iqrmin

Reactive current recovery negative rate limit (set to zero or positive value to disable)

Qmin

Parameter not used by PowerWorld Simulator. Included only to support DYD file formats.

Khv

Parameter not used by PowerWorld Simulator. Included only to support DYD file formats.

Xe

Parameter not used by PowerWorld Simulator. Included only to support DYD file formats.