Stabilizer Model: PSS2C

Following checks and corrections are applied during Validation and AutoCorrection.
- If 0 < Tw1 < Mult*TimeStep then Tw1 = Mult*TimeStep
- If 0 < Tw2 < Mult*TimeStep then Tw2 = Mult*TimeStep
- If 0 < Tw3 < Mult*TimeStep then Tw3 = Mult*TimeStep
- If 0.0 < Tw4 < 0.5*Mult*TimeStep then Tw4 = 0, ElseIf 0.5*Mult*TimeStep < Tw4 < Mult*TimeStep then Tw4 = Mult*TimeStep
- If 0.0 < T2 < 0.125*Mult*TimeStep then T2 = 0.0
ElseIf 0.125*Mult*TimeStep < T2 < 0.25*Mult*TimeStep then T2 = 0.25*Mult*TimeStep - If 0.0 < T4 < 0.125*Mult*TimeStep then T4 = 0.0
ElseIf 0.125*Mult*TimeStep < T4 < 0.25*Mult*TimeStep then T4 = 0.25*Mult*TimeStep - If 0.0 < T11 < 0.125*Mult*TimeStep then T11 = 0.0
ElseIf 0.125*Mult*TimeStep < T11 < 0.25*Mult*TimeStep then T11 = 0.25*Mult*TimeStep - If 0.0 < T13 < 0.125*Mult*TimeStep then T13 = 0.0
ElseIf 0.125*Mult*TimeStep < T13 < 0.25*Mult*TimeStep then T13 = 0.25*Mult*TimeStep - If 0.0 < T6 < 0.5*Mult*TimeStep then T6 = 0, ElseIf 0.5*Mult*TimeStep < T6 < Mult*TimeStep then T6 = Mult*TimeStep
- If 0.0 < T7 < 0.5*Mult*TimeStep then T7 = 0, ElseIf 0.5*Mult*TimeStep < T7 < Mult*TimeStep then T7 = Mult*TimeStep
- If 0.0 < T9 < 0.5*Mult*TimeStep then T9 = 0, ElseIf 0.5*Mult*TimeStep < T9 < Mult*TimeStep then T9 = Mult*TimeStep
- If Vstmax < Vstmin then swap the values. If Vstmax < 0 then Vstmax change sign to positive. If Vstmin > 0 then change sign to negative.
- If Vsi1max < Vsi1min then swap the values.
- If Vsi2max < Vsi2min then swap the values.
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:
Ics1 | First stabilizer input code; 1=Rotor speed deviation (pu); 2=Bus Freq Deviation (pu); 3=Gen Pelec on Machine Base (pu); 4=Gen accelerating power (pu); 5=Bus voltage (pu); 6=Derivative of Bus voltage (pu); 7=Compensated Frequency Signal (pu) |
Ics2 | Second stabilizer input code; 1=Rotor speed deviation (pu); 2=Bus Freq Deviation (pu); 3=Gen Pelec on Machine Base (pu); 4=Gen accelerating power (pu 5=Bus voltage (pu); 6=Derivative of Bus voltage (pu) |
M | Ramp tracking filter |
N | Ramp tracking filter |
Tw1 | First washout on first remote bus, sec |
Tw2 | Second washout on first remote bus, sec |
T6 | Time constant on first remote bus, sec |
Tw3 | First washout on second remote bus, sec |
Tw4 | Second washout on second remote bus, sec |
T7 | Time constant on second remote bus, sec |
Ks2 | Gain on second remote bus |
Ks3 | Gain on second remote bus |
T8 | Lead of ramp tracking filter |
T9 | Lag of ramp tracking filter |
Ks1 | Stabilizer gain |
T1 | Lead/lag time constant, sec |
T2 | Lead/lag time constant, sec |
T3 | Lead/lag time constant, sec |
T4 | Lead/lag time constant, sec |
T10 | Lead/lag time constant, sec |
T11 | Lead/lag time constant, sec |
Vsi1max | Stabilizer input 1 maximum limit, pu |
Vsi1min | Stabilizer input 1 minimum limit, pu |
Vsi2max | Stabilizer input 2 maximum limit, pu |
Vsi2min | Stabilizer input 2 minimum limit, pu |
Vstmax | Stabilizer output maximum limit, pu |
Vstmin | Stabilizer output minimum limit, pu |
T12 | Lead/lag time constant, sec |
T13 | Lead/lag time constant, sec |
PSSActivation | Generator MW threshold for PSS activation |
PSSDeactivation | Generator MW threshold for PSS da-activation |
Tpgfilt | Filter time constant for Pgen used in PSS output logic |
Xcomp | Reactance for compensated frequency calculation |
Tcomp | Time constant for compensated frequency calculation |