Convert the generator’s ohmic synchronous reactance into a per-unit value using MVA, kV base.
Formula
$$ Z_\text{base} = \frac{kV^2}{MVA}, \quad X_{d,pu} = \frac{X_{d,\Omega}}{Z_\text{base}} $$
Symbol legend
| Symbol | Meaning | Unit | Source |
|---|---|---|---|
| $MVA$ | Rated apparent power | MVA | nameplate |
| $kV$ | Rated line-line voltage | kV | nameplate |
| $X_d$ | Synchronous reactance | Ω or pu | IEEE 115 test |
Sources
- IEC 60034-4 - Synchronous machine test methods.