Exciter Model: EXBBC

 

Following checks and corrections are applied during Validation and AutoCorrection.

  • If 0 < T1 < Mult*TimeStep then T1 = Mult*TimeStep
  • If 0 < T2 < Mult*TimeStep then T2 = Mult*TimeStep
  • If 0 < T3 < Mult*TimeStep then T3 = Mult*TimeStep
  • If 0 < T4 < Mult*TimeStep then T4 = Mult*TimeStep
  • If Vrmax < Vrmin then swap the values
  • 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 Vr > Vrmax, then Vrmax = Vr or if Vr < Vrmin, then Vrmin = Vr

Model Equations and/or Block Diagrams

Parameters:

Tf Rate feedback constant, sec
T1 Inverse timing current constant, sec
T2 Inverse timing current constant, sec
T3 Inverse timing current constant, sec
T4 Inverse timing current constant, sec
K Voltage regulator gain
Vrmin Minimum exciter control signal, pu
Vrmax Maximum exciter control signal, pu
Eefmin Minimum exciter field voltage, pi
Eefmax Maximum exciter field voltage, pi
Xe Excitation transformer effective reactance, pu
Sisig Supplementary signal routing switch