Governor Model: WNDTGE

 

Following checks and corrections are applied during Validation and AutoCorrection.

  • If 0.0 < Tp < Mult*TimeStep then Tp = Mult*TimeStep
  • If 0.0 < Tpc < Mult*TimeStep then Tpc = Mult*TimeStep
  • If 0.0 < Tw < Mult*TimeStep then Tw = Mult*TimeStep
  • If 0.0 < Tpav < Mult*TimeStep then Tpav = Mult*TimeStep
  • If 0.0 < Tplwi < 0.5*Mult*TimeStep then Tplwi = 0, ElseIf 0.5*Mult*TimeStep < Tplwi < Mult*TimeStep then Tplwi = Mult*TimeStep
  • If 0.0 < Twowi < 0.5*Mult*TimeStep then Twowi = 0, ElseIf 0.5*Mult*TimeStep < Twowi < Mult*TimeStep then Twowi = Mult*TimeStep
  • If Pmxwi < Pmnwi 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 Power Control > PImax , then PImax = Power Control or if Power Control < PImin, then PImin= Power Control

Model Equations and/or Block Diagrams

   

Parameters:

Trate Turbine rating, MW
Usize WTG unit size (1.5 or 3.6)
Spdwl Initial wind speed, m/s
Tp Pitch control constant, sec
Tpc Power control time constant, sec
Kpp Pitch control proportional gain
Kip Pitch control integral gain
Kptrq Torque control proportional gain
Kitrq Torque control integral gain
Kpc Pitch compensation proportional gain
Kic Pitch compensation integral gain
PIMax Maximum blade pitch, deg
PIMin Minimum blade pitch, deg
PIRat Blade pitch rate limit, deg/sec
PWmax Maximum power order, pu
PWmin Minimum power order, pu
PWrat Power order rate limit, pu/sec
H Rotor inertia constant, p.u. (on turbine MW base)
Nmass 2 for 2 mass model
Hg Generator rotor inertia constant, p.u. (on turb. MW base)
Ktg Shaft stiffness (p.u. torque / rad)
Dtg Shaft damping (p.u. torque / p.u. speed)
Wbase Base mechanical speed (rad./sec.)
Tw Rate limit washout time constant, sec.
Apcflg Active power control enable flag
Tpav Filter time constant on Pavail, sec.
Pa Active power point in frequency response curve, p.u.
Pbc Active power point in frequency response curve, p.u.
Pd Active power point in frequency response curve, p.u.
Fa Frequency value for Pa frequency response curve, p.u.
Fb Frequency value for Pbc frequency response curve, p.u.
Fc Frequency value for Pbc frequency response curve, p.u.
Fd Frequency value for Pd frequency response curve, p.u.
Pmax Maximum wind plant power, p.u.
Pmin Minimum wind plant power, p.u.
Kwi WINENERTIA gain; default=0; typical non-default is 10
dbwi Deadband, pu
Tlpwi Low pass filter time constant, sec
Twowi Washout time constant, sec
urlwi Up rate limit
drlwi Down rate limit
Pmxwi Maximum power output, pu
Pmnwi Minimum power output, pu
wfflg WindFREE reactive power function flag (1=enabled)
Td1 Time delay in APC output, sec
Tpset Filter time constant on Pset, sec