Stabilizer Model: PSS4B

Following checks and corrections are applied during Validation and AutoCorrection.

• If TH <= 0 then TH = Mult*TimeStep
• If A <= 0 then A = Mult*TimeStep
• If KL1 <= 0 then KL1 = Mult*TimeStep
• If KL2 <= 0 then KL2 = Mult*TimeStep

• If KI1 <= 0 then KI1 = Mult*TimeStep

• If KI2 <= 0 then KI2 = Mult*TimeStep

• If KH1 <= 0 then KH1 = Mult*TimeStep

• If KH2 <= 0 then KH2 = 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 VLmax < VLmin then swap the values. If VLmax < 0 then VLmax change sign to positive. If VLmin > 0 then change sign to negative.
• If VImax < VImin then swap the values. If VImax < 0 then VImax change sign to positive. If VImin > 0 then change sign to negative.
• If VHmax < VHmin then swap the values. If VHmax < 0 then VHmax change sign to positive. If VHmin > 0 then change sign to negative.

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