Stabilizer Model: ST2CUT
Following checks and corrections are applied during Validation and AutoCorrection.
- If 0 < T4 < Mult*TimeStep then T4 = Mult*TimeStep
- If 0.0 < T1 < 0.5*Mult*TimeStep then T1 = 0, ElseIf 0.5*Mult*TimeStep < T1 < Mult*TimeStep then T1 = Mult*TimeStep
- If 0.0 < T2 < 0.5*Mult*TimeStep then T2 = 0, ElseIf 0.5*Mult*TimeStep < T2 < Mult*TimeStep then T2 = Mult*TimeStep
- If 0.0 < T6 < 0.5*Mult*TimeStep then T6 = 0, ElseIf 0.5*Mult*TimeStep < T6 < Mult*TimeStep then T6 = Mult*TimeStep
- If 0.0 < T8 < 0.5*Mult*TimeStep then T8 = 0, ElseIf 0.5*Mult*TimeStep < T8 < Mult*TimeStep then T8 = Mult*TimeStep
- If 0.0 < T10 < 0.5*Mult*TimeStep then T10 = 0, ElseIf 0.5*Mult*TimeStep < T10 < Mult*TimeStep then T10 = Mult*TimeStep
- If Lsmax < Lsmin then swap the values. If Lsmax < 0 then Lsmax change sign to positive. If Lsmin > 0 then change sign to negative.
- If Vcu < Vcl 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
Model Equations and/or Block Diagrams
Parameters:
| IC1 | First stabilizer input code (for Remote Input); 1 - Rotor speed diviation (pu); 2 - Bus frequency deviation (pu); 3 - Generator electrical power on MBASE base (pu); 4 - Generator accelerating power (pu); 5 - Bus voltage; 6 - Derivative of pu bus voltage |
| IC2 | Second stabilizer input code |
| K1 | Gain 1 |
| K2 | Gain 2 |
| T1 | Time constant, sec |
| T2 | Time constant, sec |
| T3 | Time constant, sec |
| T4 | Time constant, sec |
| T5 | Time constant, sec |
| T6 | Time constant, sec |
| T7 | Time constant, sec |
| T8 | Time constant, sec |
| T9 | Time constant, sec |
| T10 | Time constant, sec |
| Lsmax | Maximum stabilizer output, pu |
| Lsmin | Minimum stabilizer output, pu |
| Vcu | Stabilizer input cutoff threshold, pu |
| Vcl | Stabilizer input cutoff threshold, pu |