A 500-MVA, 13.8 -kV synchronous generator with (mathrm{X}_{d}^{prime prime}=mathrm{X}_{2}=0.20) and (mathrm{X}_{0}=0.05) per unit is connected to a
Question:
A 500-MVA, 13.8 -kV synchronous generator with \(\mathrm{X}_{d}^{\prime \prime}=\mathrm{X}_{2}=0.20\) and \(\mathrm{X}_{0}=0.05\) per unit is connected to a \(500-\mathrm{MVA}, 13.8 -\mathrm{kV} \Delta / 500-\mathrm{kV}\) \(\mathrm{Y}\) transformer with 0.10 per-unit leakage reactance. The generator and transformer neutrals are solidly grounded. The generator is operated at no-load and rated voltage, and the high-voltage side of the transformer is disconnected from the power system. Compare the subtransient fault currents for the following bolted faults at the transformer high-voltage terminals: three-phase fault, single line-to-ground fault, line-to-line fault, and double line-to-ground fault.
Step by Step Answer:
Power System Analysis And Design
ISBN: 9781305632134
6th Edition
Authors: J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma