Governor Model: HYGOV2 and HYGOV2D

 

Following checks and corrections are applied during Validation and AutoCorrection.

  • If 0.0 < T3 < Mult*TimeStep then T3= Mult*TimeStep
  • If 0.0 < T4 < Mult*TimeStep then T4= Mult*TimeStep
  • If 0.0 < T6 < Mult*TimeStep then T6= Mult*TimeStep
  • If 0.0 < Tr < Mult*TimeStep then Tr= Mult*TimeStep
  • If Vgmax < 0 then change the sign to positive.
  • If Gmax < Gmin 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 Gate > Pmax , then Pmax = Gate or if Gate < Pmin , then Pmin = Gate

Model Equations and/or Block Diagrams

Parameters for HYGOV2:

Kp Proportional gain, pu
Ki Integral gain, pu
Ka Governor gain
T1 Governor mechanism time constant, sec
T2 Turbine power time constant, sec
T3 Turbine exhaust temperature time constant, sec
T4 Governor lead time constant, sec
T5 Governor lag time constant, sec
T6 T, sec
Tr Washout time constant, sec
Rtemp Temporary droop, pu
R Permanent droop, pu
Vgmax Model Parameters\Vgmax
Gmax Maximum gate velocity, pu of mwcap
Gmin Minimum gate velocity, pu of mwcap
Pmax Maximum gate opening, pu of mwcap

Parameters for HYGOV2D:

Kp Proportional gain, pu
Ki Integral gain, pu
Ka Governor gain
T1 Governor mechanism time constant, sec
T2 Turbine power time constant, sec
T3 Turbine exhaust temperature time constant, sec
T4 Governor lead time constant, sec
T5 Governor lag time constant, sec
T6 T, sec
Tr Washout time constant, sec
Rtemp Temporary droop, pu
R Permanent droop, pu
Vgmax Model Parameters\Vgmax
Gmax Maximum gate velocity, pu of mwcap
Gmin Minimum gate velocity, pu of mwcap
Pmax Maximum gate opening, pu of mwcap
dbH Deadband High (pu)
dbL Deadband Low (pu)
Trate Turbine rating, MW