Exciter Model: EXELI

Following checks and corrections are applied during Validation and AutoCorrection.

• If 0.0 < Tfv < 0.5*Mult*TimeStep then Tfv = 0, ElseIf 0.5*Mult*TimeStep < Tfv < Mult*TimeStep then Tfv = Mult*TimeStep
• If 0.0 < Tfi < 0.5*Mult*TimeStep then Tfi = 0, ElseIf 0.5*Mult*TimeStep < Tfi < Mult*TimeStep then Tfi = Mult*TimeStep
• If 0.0 < Ts1 < 0.5*Mult*TimeStep then Ts1 = 0,ElseIf 0.5*Mult*TimeStep < Ts1 < Mult*TimeStep then Ts1 = Mult*TimeStep
• If 0.0 < Ts2 < 0.5*Mult*TimeStep then Ts2 =0, ElseIf 0.5*Mult*TimeStep < Ts2 < Mult*TimeStep then Ts2 = Mult*TimeStep
• If 0.0 < Tw < 0.5*Mult*TimeStep then Tw = 0, ElseIf 0.5*Mult*TimeStep < Tw < Mult*TimeStep then Tw = Mult*TimeStep
• If 0 < Tnu < Mult*TimeStep then Tnu = Mult*TimeStep
• If Vpi > 0 then Vpi = Mult*TimeStep
• If Vpu > 0 then Vpu = Mult*TimeStep
• If Efdmax < Efdmin 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

Following treatment is handled during the transient numerical simulation

• If Efd > Efdmax, then Efdmax = Efd or if Efd < Efdmin, then Efdmin = Efd