Governor Model: IEEEG1PID

 

Following checks and corrections are applied during Validation and AutoCorrection.

  • If 0.0 < Tcv < Mult*TimeStep then T3 = Mult*TimeStep.
  • If 0.0 < Td < Mult*TimeStep then Td = Mult*TimeStep.
  • For Tdc, Tb, Trh, Tco, and Trhd, if value is less than 0.5*Mult*TimeStep it is set to 0.0.
    If Value is between 0.5*Mult*TimeStep and Mult*TimStep it is set to Mult*TimeStep
  • If Droop > 0.0001, then Droop set to 0.0001 (can't set this to zero)
  • abs(K1 + K3 + K5 + K7) > 0.000001 or this is treated as a validation error
  • If a second generator is references, abs(K2 + K4 + K6 + K8) > 0.000001 or this is treated as a validation error
  • Pthrot > 0.0001 or this is treated as a validation error
  • Values should be entered with Pmax >= Pmin. If Pmax < Pmin then swap the values.
  • Values should be entered with Uo > 0 and Uc < 0.
    If (Uo > 0) AND (Uc > 0), then set Uc = -Uc
    If (Uo < 0) AND (Uc < 0), then set Uo = -Uo
    If (Uo < 0) AND (Uc > 0), the values of Uc and Uo are swapped

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

Model Equations and/or Block Diagrams

Parameters:

Droop Droop: Droop setting, pu
Tdc Tdc: Droop Delay, seconds
Kp Kp: Proportional gain, pu
Ki Ki: Integral gain, pu
Kd Kd: Derivative gain, pu
Td Td: Derivative delay, seconds
Tcv Tcv: Valve positioner time constant, sec
Uo Uo: Maximum valve opening velocity, pu/sec
Uc Uc: Maximum valve closing velocity, pu/sec
Pmax Pmax: Maximum valve opening, pu
Pmin Pmin: Minimum valve opening, pu
Pthrot Pthrot: Power Throttle, pu
Tb Tb: High pressure turbine bowl time constant, sec
K1 K1: Fraction of hp shaft power after first boiler pass
K2 K2: Fraction of lp shaft power after first boiler pass
Trh Trh: Reheater time constant, sec
K3 K3: Fraction of hp shaft power after reheater
K4 K4: Fraction of lp shaft power after reheater
Tco Tco: Crossover time constant, sec
K5 K5: Fraction of hp shaft power after crossover
K6 K6: Fraction of lp shaft power after crossover
Trhd Trhd: Double reheat time constant, sec
K7 K7: Fraction of hp shaft power after double reheater
K8 K8: Fraction of lp shaft power after double reheater
Plosshp Plosshp: Power Loss on hp turbine, per unit on hp gen MVABase
Plosslp Plosslp: Power Loss on lp turbine, per unit on lp gen MVABase
Dlim Dlim: Dlim, pu
dbH dbH: Deadband High (pu)
dbL dbL: Deadband Low (pu)
Trate Trate: Model Rating, MW. (If 0, then treated as summation of hp and lp gen MVABase