Governor Model: WTDTA1

 

Following checks and corrections are applied during Validation and AutoCorrection.

  • KShaft: If 1/(KShaft/(2*Pi*NominalFrequency) * ( (Ht + Hg) * 2*Pi * 60) / ( 2*sqr(2*Pi) * Ht*Hg ))< TwoMassMassFrequencyMultiplier*TimeStep. We will treat as a one-mass model instead with H = (Ht + Hg).

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:

H Total Inertia Constant (s)
Damp Machine Damping Factor (pu)
Htfrac Turbine Inertia Fraction (Ht/H)
Freq1 First Shaft Torsional Resonant Frequency (Hz)
Dshaft Shaft Damping Factor (pu)