A generator is connected through a transformer to a synchronous motor. Reduced to thc same base,… 1 answer below »

A generator is connected through a transformer to a synchronous motor. Reduced to thc same base, the per-unit subtransicnt reactances of the gcncrator and motor arc 0.15 and 0.35, respectively, and the leakage reactance of the transformer is 0.10 per unit. A three-phase fault occurs at the terminals of the motor when the terminal voltage of thc gcncrator is 0.9 per unit and the output current of the generator is 1.0 per unit at 0.8 power factor leading. Find the subtransicnt current in per unit in the fault, in the generator, and in the motor. Use the terminal voltage of the generator as the reference phasor and obtain the solution (a) by computing the voltages behind subtransient reactance in the generator and motor and (b) by using Thevenin's theorem.    

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