Machine Model: STCON
AutoCorrection Properties
Following checks and corrections are applied during Validation and AutoCorrection.
- If 0.0 < Tf < 0.5*Mult*TimeStep then Tf = 0, ElseIf 0.5*Mult*TimeStep < Tf < Mult*TimeStep then Tf = Mult*TimeStep
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:
| R | Current droop, p.u. |
| Tf | Voltage transducer time constant, sec. |
| Kp | Proportional gain |
| Ki | Reset gain gain |
| Ta | Lead time constant, sec. ( unused ) |
| Tb | Lag time constant, sec. ( unused ) |
| Xt | Internal (transformer) reactance, pu on mbase |
| Vmin | Minimum inverter voltage, p.u. |
| Vmax | Maximum inverter voltage, p.u. |
| Kil | Current limiter gain |
| Imax | Current limit setting, p.u. on mbase |
| Kqi | Reactive controller gain |
| Qset | Reactive power output set-point, MVAR |
| Accel | Solution acceleration factor |
| Imxeps | A delta p.u. current used in umax and umin calculation |
| vthresh | Voltage threshold above which vmax and vmin limits become active |