Machine Model: GENDCO
AutoCorrection Properties
Following checks and corrections are applied during Validation and AutoCorrection.
- If Xdp > Xd then Xdp = 0.8*Xd
- If Xdpp > Minimum(Xdp, Xqp) then Xdpp = 0.8*Minimum(Xdp, Xqp)
- If Xdpp < 0.05 then Xdpp = 0.05
- If Xqp > Xq then Xqp = Xq
- If Xl >Xdpp then Xl = 0.8*Xdpp
- Ta: Warning message - GENDCO models presently are treated the same as GENROU models in Simulator. The DC offset is ignored and the Ta term ignored.
Model Equations and/or Block Diagrams
Parameters:
| H | Inertia constant, sec |
| D | Damping factor, pu |
| Ra | Stator resistance, pu |
| Xd | Direct axis synchronous reactance |
| Xq | Quadrature axis synchronous reactance |
| Xdp | Direct axis transient reactance |
| Xqp | Quadrature axis transient reactance |
| Xdpp | Direct axis subtransient reactance |
| Xl | Stator leakage reactance |
| Tdop | Open circuit direct axis transient time constant |
| Tqop | Quadrature axis transient time constant |
| Tdopp | Open circuit direct axis subtransient time constant |
| Tqopp | Quadrature axis subtransient time constant |
| S1 | Saturation factor at 1.0 pu flux |
| S12 | Saturation factor at 1.2 pu flux |
| Ta | Time constant, sec (Not used in PowerWorld) |