Governor Model: CCBT1

Following checks and corrections are applied during Validation and AutoCorrection.

• If 0.0 < Td < Mult*TimeStep then Td = Mult*TimeStep
• If 0.0 < Tg < Mult*TimeStep then Tg = Mult*TimeStep
• If 0.0 < Tpelec < 0.5*Mult*TimeStep then Tpelec = 0, ElseIf 0.5*Mult*TimeStep < Tpelec < Mult*TimeStep then Tpelec = Mult*TimeStep
• If 0.0 < Tf < 0.5*Mult*TimeStep then Tf = 0, ElseIf 0.5*Mult*TimeStep < Tf < Mult*TimeStep then Tf = 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 0.0 < Trh < 0.5*Mult*TimeStep then Trh = 0, ElseIf 0.5*Mult*TimeStep < Trh < Mult*TimeStep then Trh = Mult*TimeStep
• If Kd7 <> 0 the:
  • If 0.0 < Td7 < Mult*TimeStep then Td7 = Mult*TimeStep
• Rmax1 and Rmin1 to Rmax6 and Rmin6:
  • If Rmax < Rmin then swap the values.
• Max1 and Min1 to Max7 and Min7:
  • If Max < Min 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 PD7 > Pmax , then Pmax = Gate or if Gate < Pmin , then Pmin = Gate
• If PI1 > Max1, then Max1 = PI1 or if PI1 < Min1, then Min1 = PI1
• If PI2 > Max2, then Max2 = PI2 or if PI2 < Min2, then Min2 = PI2
• If PI3 > Max3, then Max3 = PI3 or if PI3 < Min3, then Min3 = PI3
• If PI4 > Max4, then Max4 = PI4 or if PI4 < Min4, then Min4 = PI4
• If PI5 > Max5, then Max5 = PI5 or if PI5 < Min5, then Min5 = PI5
• If PI6 > Max6, then Max6 = PI6 or if PI6 < Min6, then Min6 = PI6
• If Valve > Vmax, then Vmax = Valve or if Valve < Vmin, then Vmin = Valve