Exciter Model: WT3E and WT3E1

WT3E:

Following checks and corrections are applied during Validation and AutoCorrection.

• If 0.0 < Tr < 0.25*Mult*TimeStep then Tr = 0.0
  
  ElseIf 0.25*Mult*TimeStep < Tr < 0.5Mult*TimeStep then Tr = 0.5*Mult*TimeStep
• If 0.0 < Tv < 0.5*Mult*TimeStep then Tv = 0, ElseIf 0.5*Mult*TimeStep < Tv < Mult*TimeStep then Tv = Mult*TimeStep
• If 0.0 < Tp < 0.5*Mult*TimeStep then Tp = 0, ElseIf 0.5*Mult*TimeStep < Tp < Mult*TimeStep then Tp = Mult*TimeStep
• If 0.0 < Tc < 0.5*Mult*TimeStep then Tc = 0, ElseIf 0.5*Mult*TimeStep < Tc < Mult*TimeStep then Tc = Mult*TimeStep
• If 0.0 < Tpwr < 0.5*Mult*TimeStep then Tpwr = 0, ElseIf 0.5*Mult*TimeStep < Tpwr < Mult*TimeStep then Tpwr = Mult*TimeStep
• If 0 < Tfp < Mult*TimeStep then Tfp = Mult*TimeStep
• Kpp and Kip can't be both zero. Must be corrected by user.
• If Vmax < Vmin then swap the values
• If Qmax < Qmin then swap the values
• If Pmax < Pmin then swap the values
• If Xiqmax < Xiqmin then swap the values

Following treatment is handled during the transient numerical simulation

• If QCmd > Qmax , then Qmax = QCmd or if QCmd < Qmin , then Qmin = QCmd
• If VRef > Vmax , then Vmax = VRef or if VRef < Vmin, then Vmin = VRef
• If EqppCMD > Xiqmax, then Xiqmax = EqppCMD or if EqppCMD < Xiqmin, then Xiqmin = EqppCMD
• If Pord > Pmax , then Pmax = Pord or if Pord < Pmin, then Pmin = Pord

WT3E1:

Following checks and corrections are applied during Validation and AutoCorrection.

• If 0.0 < Tr < 0.25*Mult*TimeStep then Tr = 0.0
  ElseIf 0.25*Mult*TimeStep < Tr < 0.5Mult*TimeStep then Tr = 0.5*Mult*TimeStep
• If 0.0 < Tv < 0.5*Mult*TimeStep then Tv = 0, ElseIf 0.5*Mult*TimeStep < Tv < Mult*TimeStep then Tv = Mult*TimeStep
• If 0.0 < Tp < 0.5*Mult*TimeStep then Tp = 0, ElseIf 0.5*Mult*TimeStep < Tp < Mult*TimeStep then Tp = Mult*TimeStep
• 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 < Tpwr < 0.5*Mult*TimeStep then Tpwr = 0, ElseIf 0.5*Mult*TimeStep < Tpwr < Mult*TimeStep then Tpwr = Mult*TimeStep
• If 0 < Tfp < Mult*TimeStep then Tfp = Mult*TimeStep
• Kpp and Kip can't be both zero. Must be corrected by user.
• If Vmax < Vmin then swap the values
• If Qmax < Qmin then swap the values
• If Pmax < Pmin then swap the values
• If RPmax < RPmin then swap the values
• If Xiqmax < Xiqmin then swap the values

Following treatment is handled during the transient numerical simulation

• If QCmd > Qmax , then Qmax = QCmd or if QCmd < Qmin , then Qmin = QCmd
• If VRef > Vmax , then Vmax = VRef or if VRef < Vmin, then Vmin = VRef
• If EqppCMD > Xiqmax, then Xiqmax = EqppCMD or if EqppCMD < Xiqmin, then Xiqmin = EqppCMD
• If Pord > Pmax , then Pmax = Pord or if Pord < Pmin, then Pmin = Pord

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