Determine synchronous-transient and sub-transient reactances

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Reference no: EM13258476

A symmetrical short circuit is suddenly applied to a synchronous generator on open circuit, terminal voltage 1.0 p.u. The initial peak values of the oscillogram of the short circuit current during the sub-transient, transient and steady state periods are 8.0 p.u., 5.7 p.u. and 1.8 p.u. respectively.

a. Neglecting resistance, determine the synchronous, transient and sub-transient reactances.

b.If the machine is delivering 1.0 p.u. current at 0.8 power factor lagging at the rated terminal voltage when the short circuit is applied, calculate the new sub-transient, transient and steady state currents.

Reference no: EM13258476

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