Two identical synchronous machines, each rated (60 mathrm{MVA}) and (15 mathrm{kV}) with a subtransient reactance of 0.1

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Two identical synchronous machines, each rated \(60 \mathrm{MVA}\) and \(15 \mathrm{kV}\) with a subtransient reactance of 0.1 p.u., are connected through a line of reactance 0.1 p.u. on the base of the machine rating. One machine is acting as a synchronous generator, while the other is working as a motor drawing \(40 \mathrm{MW}\) at 0.8 p.f. leading with a terminal voltage of \(14.5 \mathrm{kV}\), when a symmetrical threephase fault occurs at the motor terminals. Determine the subtransient currents in the generator, the motor, and the fault by using the internal voltages of the machines. Choose a base of \(60 \mathrm{MVA}\) and \(15 \mathrm{kV}\) in the generator circuit.

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Power System Analysis And Design

ISBN: 9781305632134

6th Edition

Authors: J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

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