Governor Model: W2301
Following checks and corrections are applied during Validation and AutoCorrection.
- If 0.0 < Turb < 0.5*Mult*TimeStep then Turb = 0, ElseIf 0.5*Mult*TimeStep < Turb < Mult*TimeStep then Turb = 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 < Tv < 0.25*Mult*TimeStep then Tv = 0.0
ElseIf 0.25*Mult*TimeStep < Tv < 0.5*Mult*TimeStep then Tv = 0.5*Mult*TimeStep - If Gmax < Gmin then swap the values.
- Alpha: Alpha can not be 1.05. Error will be created.
- Beta: Beta can not be 0.0. Error will be created.
- Gamma: Gamma can not be 0.0. Error will be created.
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 Valve > Gmax , then Gmax = Valve or if Valve < Gmin , then Gmin = Valve
Model Equations and/or Block Diagrams
Parameters:
| Tp | Power transducer time constant |
| Alpha | Gain setting |
| Beta | Reset setting |
| Rho | Compensation |
| Gamma | Droop setting, pu |
| Gain | Turbine gain |
| TV | Valve actuator time constant, sec |
| Velamx | Maximum valve velocity, psec |
| Gmax | Maximum valve opening, pu |
| Gmin | Minimum valve opening, pu |
| Gnl | Valve opening at no load, pu |
| Tturb | Turbine time constant, sec |
| D | Turbine damping coefficient |
| Kt | Turbine lead-lag ratio |