In the following system, a 60 Hz round-rotor synchronous generator with a direct

Question

In the following system, a 60 Hz round-rotor synchronous generator with a direct axis transient reactance of 0.25 pu and a constant of inertia of H = 4 sec is connected to an infinite bus via a transformer and 2 similar parallel lines. The reactance of the transformer is 0.25 pu and the reactance of each line is 0.45 pu. The generator is delivering an active power of 0.7 pu with a lagging power factor of 0.9 to the grid. The voltage at the infinite bus is 1 pu. If a solid permanent balanced fault occurs on bus 1, what will be the maximum transferrable power to the infinite bus during fault? 2.1251 pu 1.4815 pu 0 1.1853 pu

Explanation / Answer

Answer is 0 ( zero).

Because it's a bus fault and during this fault no power would be transferred to infinite bus.

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