Stabilizer Model: PSS2B

 

Following checks and corrections are applied during Validation and AutoCorrection.

  • If 0 < Tw1 < Mult*TimeStep then Tw1 = Mult*TimeStep
  • If 0 < Tw3 < Mult*TimeStep then Tw3 = Mult*TimeStep
  • If 0.0 < Tw2 < 0.5*Mult*TimeStep then Tw2 = 0, ElseIf 0.5*Mult*TimeStep < Tw2 < Mult*TimeStep then Tw2 = 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 < 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 0.0 < Tb < 0.5*Mult*TimeStep then Tb = 0, ElseIf 0.5*Mult*TimeStep < Tb < Mult*TimeStep then Tb = 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
Ics2 Second stabilizer input code
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
A Lead/lag time numerical gain (Not in IEEE model)
Ta Lead/lag time constant, sec (Not in IEEE model)
Tb Lead/lag time constant, sec (Not in IEEE model)
Ks4 Gain on second remote bus