For the system of Problem 9.11, compute the fault current and voltages at the fault for the following faults at point F: (a) a bolted single line-to-ground fault; (b) a line- to-line fault through a fault impedance ZF = j0.05 per unit; (c) a double line-to- ground fault from phase B to C to ground, where phase B has a fault impedance ZF = j0.05 per unit, phase C also has a fault impedance ZF = j0.05 per unit, and the common line-to-ground fault impedance is ZG = j0.033 per unit.

For the system of Problem 9.11, compute the fault current and voltages at the fault for the following faults at point F: (a) a bolted single line-to-ground fault; (b) a line- to-line fault through a fault impedance ZF = j0.05 per unit; (c) a double line-to- ground fault from phase B to C to ground, where phase B has a fault impedance ZF = j0.05 per unit, phase C also has a fault impedance ZF = j0.05 per unit, and the common line-to-ground fault impedance is ZG = j0.033 per unit.

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

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

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

Chapter9: Unsymmetrical Faults

Section: Chapter Questions

Problem 9.30P

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