Machine Model: PVD1
AutoCorrection Properties
Following checks and corrections are applied during Validation and AutoCorrection.
- If 0.0 < Tf < 0.5*Mult*TimeStep then Tf = 0, ElseIf 0.5*Mult*TimeStep < Tf < Mult*TimeStep then Tf = Mult*TimeStep
- If Tg < 4*TimeStep then Tg = 4*TimeStep, and if Tg > 0.2 then Tg = 0.2
Mult represents the user-specified value Minimum time constant size as multiple of time step option on the Validation page of the Transient Stability Dialog
TimeStep represents the integration time step being used as described on TimeStep
Model Equations and/or Block Diagrams
Parameters:
| Pqflag | Priority to reactive current (0) or active current (1) |
| Xc | Line drop compensation reactance (pu on mbase) |
| Qmx | Maximum change in reactive power due to voltage droop response (in pu on mbase) |
| Qmn | Minimum change in reactive power due to voltage droop response (in pu on mbase) |
| V0 | Lower limit of deadband for voltage droop response (pu) |
| V1 | Upper limit of deadband for voltage droop response (pu) |
| Dqdv | Voltage droop response characteristic |
| fdbd | Overfrequency deadband for governor response (pu deviation) |
| Ddn | Down regulation droop gain (pu on mbase) |
| Imax | Apparent current limit (pu on mbase) |
| Vt0 | Voltage below which all generation is tripped (pu) |
| Vt1 | Voltage below which generation starts to trip (pu) |
| Vt2 | Voltage above which generation starts to trip (pu) |
| Vt3 | Voltage above which all generation is tripped (pu) |
| Vrflag | Fraction of generation that can reconnect after low or high voltage tripping. 0.0 means voltage tripping is permanent; 1.0 means all generation can reconnect; Between 0 and 1 for partially self-resetting |
| Ft0 | Frequency below which all generation is tripped (pu) |
| Ft1 | Frequency below which generation starts to trip (pu) |
| Ft2 | Frequency above which generation starts to trip (pu) |
| Ft3 | Frequency above which all generation is tripped (pu) |
| Frflag | Fraction of generation that can reconnect after low or high frequency tripping. 0.0 means frequency tripping is permanent; 1.0 means all generation can reconnect; Between 0 and 1 for partially self-resetting |
| Tg | Inverter current lag time constant (seconds) |
| Tf | Frequency measurement lag time constant (seconds) |
| Vtmax | Voltage limit for high voltage clamp logic (pu) |
| Lvpnt1 | Low voltage active current management breakpoint 1 (pu) |
| lvpnt0 | Low voltage active current management breakpoint 0 (pu) |
| qmin | High Voltage reactive current management term for PSLF (not used by PowerWorld) |
| accel | High Voltage reactive current management term for PSLF (not used by PowerWorld) |