Consider a simple circuit configuration shown in Figure 9.24 to calculate the fault currents (I_{1}, I_{2}), and

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Consider a simple circuit configuration shown in Figure 9.24 to calculate the fault currents \(I_{1}, I_{2}\), and \(I\) with the switch closed.

(a) Compute \(E_{1}\) and \(E_{2}\) prior to the fault based on the prefault voltage \(V=1 \angle 0^{\circ}\) and then, with the switch closed, determine \(I_{1}, I_{2}\), and \(I\).

(b) Start by ignoring prefault currents, with \(E_{1}=E_{2}=1 \angle 0^{\circ}\). Then superimpose the load currents, which are the prefault currents, \(I_{1}=-I_{2}=1 \angle 0^{\circ}\). Compare the results with those of part (a).

Figure 9.24

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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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