Load Characteristic Model: CMPLDW

Following checks and corrections are applied during Validation and AutoCorrection.

• If Vmax < Vmin then swap the values. If Vmax < 0 then Vmax change sign to positive. Also if Vmin < 0.96 then Vmin = 0.96; and also if Vmax < 0.96 then Vmax = 0.96
• Mtypa, Mtypb, Mtypc and Mtypd: Must be either 1 or 3. This is an error and do not autocorrect the values.
• FmA, FmB, FmC, FmD and Fel: Summation of (FmA + FmB + FmC + FmD + Fel) must be less or equal than 1.0, and if not then the values will be normalized so that sum equals 1.0.
• For Motor Type 1 Motors (LD1PAC):
  • 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 < Tth < 0.5*Mult*TimeStep then Tth = 0, ElseIf 0.5*Mult*TimeStep < Tth < Mult*TimeStep then Tth = Mult*TimeStep
  • If 0.0 < Frst < 0.5*Mult*TimeStep then Frst = 0, ElseIf 0.5*Mult*TimeStep < Frst < Mult*TimeStep then Frst = Mult*TimeStep
  • If 0.0 < CompPF < 0.01*Mult*TimeStep then CompPF = 0.0
    ElseIf 0.01*Mult*TimeStep < CompPF < Mult*TimeStep then CompPF = Mult*TimeStep
• For Motor Type 3 Motors (MOTOR_CMP):
  • If 0 < Tpo < Mult*TimeStep then Tpo = Mult*TimeStep
  • If H < 0.01 then H = 0.01.
  • If Lp > 0.4*Ls then Lp = 0.4*Ls
  • If Lpp > Lp then Lpp = Lp

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