Exciter Model: EXIVO

Following checks and corrections are applied during Validation and AutoCorrection.

• If 0.0 < Tr < 0.5*Mult*TimeStep then Tr = 0, ElseIf 0.5*Mult*TimeStep < Tr < Mult*TimeStep then Tr = Mult*TimeStep
• If 0.0 < T2 < 0.5*Mult*TimeStep then T2 = 0, ElseIf 0.5*Mult*TimeStep < T2 < Mult*TimeStep then T2 = Mult*TimeStep
• If 0.0 < T4 < 0.5*Mult*TimeStep then T4 = 0, ElseIf 0.5*Mult*TimeStep < T4 < Mult*TimeStep then T4 = 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

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

Following treatment is handled during the transient numerical simulation

• If V5 > Efdmax, then Efdmax = V5 or if V5 < Efdmin, then Efdmin = V5
• If V3 > Vmax3, then Vmax3 = V3 or if V3 < Vmin3, then Vmin3 = V3
• If V1 > Vmax1, then Vmax1 = V1 or if V1 < Vmin1, then Vmin1 = V1