Plant Controller Model: REPC_A, REPCA1 and REPCTA1

Following checks and corrections are applied during Validation and AutoCorrection.

• If 0 < Ddn < Mult*TimeStep then Ddn = Mult*TimeStep
• If 0 < Dup < Mult*TimeStep then Dup = Mult*TimeStep
• If 0.0 < Tflr < 0.5*Mult*TimeStep then Tflr = 0, ElseIf 0.5*Mult*TimeStep < Tflr < Mult*TimeStep then Tflr = 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 < Tlag < 0.5*Mult*TimeStep then Tlag = 0, ElseIf 0.5*Mult*TimeStep < Tlag < Mult*TimeStep then Tlag = Mult*TimeStep
• If Femax < Femin then swap the values. If Femax < 0 then Femax change sign to positive. If Femin > 0 then change sign to negative.
• If Emax < Emin then swap the values. If Emax < 0 then Emax change sign to positive. If Emin > 0 then change sign to negative.
• Dbd, dbd1 and dbd2:
  • If Branch is not specified: If RefFlag = 1, and Vcomp = 1 and FreqFlag = 0 do nothing else Must specify a branch on which P, Q, and I measurements are taken.
  • If Branch is specified: Measurement Bus must be one of the terminals of the Measurement Branch.

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 Reactive PI > Qmax, then Qmax = Reactive PI or if Reactive Pi < Qmin, then Qmin = Reactive Pi
• If PI Power limits > Pmax, then Pmax = PI Power limits or if PI Power limits < Pmin, then Pmin = PI Power limits