Exciter Model: IEET5A
Following checks and corrections are applied during Validation and AutoCorrection.
- If 0 < Te < Mult*TimeStep then Te = Mult*TimeStep
- If 0.0 < Trh < 0.5*Mult*TimeStep then Ta = 0, ElseIf 0.5*Mult*TimeStep < Trh < Mult*TimeStep then Trh = Mult*TimeStep
- If Vrmax < Vrmin then swap the values
- If Efdmax < Efdmin 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 Vr > Vrmax, then Vrmax = Vr or if Vr < Vrmin, then Vrmin = Vr
- If Efd > Efdmax, then Efdmax = Efd or if Efd < Efdmin, then Efdmin = Efd
Model Equations and/or Block Diagrams
Parameters:
| Ka | Voltage regulator gain |
| Trh | Rheostat time constant, sec |
| Kv | Fast raise/lower contact setting |
| Vrmax | Maximum control element output, pu |
| Vrmin | Minimum control element output, pu |
| Te | Exciter field time constant, sec |
| Ke | Exciter field resistance line slope margin, pu |
| E1 | Field voltage value, 1 |
| SE1 | Saturation factor at E1 |
| E2 | Field voltage value, 2 |
| SE2 | Saturation factor at E2 |
| Efdmax | Maximum excitation output, pu |
| Efdmin | Minimum excitation output, pu |