Reconsider the synchronous generator of Problem 8.36. Obtain sequencenetwork representations for the following fault conditions. (a) A

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Reconsider the synchronous generator of Problem 8.36. Obtain sequencenetwork representations for the following fault conditions.

(a) A short-circuit between phases \(b\) and \(c\).

(b) A double line-to-ground fault with phases \(b\) and \(c\) grounded.

Problem 8.36

Consider Figures 8.13 and 8.14 of the text with reference to a Y-connected synchronous generator (grounded through a neutral impedance \(Z_{n}\) ) operating at no load. For a line-to-ground fault occurring on phase \(a\) of the generator, list the constraints on the currents and voltages in the phase domain, transform those into the sequence domain, and then obtain a sequence-network representation. Also, find the expression for the fault current in phase \(a\).

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Figure 8.13

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Figure 8.14

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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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