The bus bars of a power station are in two sections A and B separated by a reactor. Connected in section A are two 12 MVA generators of 15% reactance each and to B, 8 MVA generator of reactance 10%. The reactor is rated 8 MVA and 15% reactance. Two feeders are connected to bus bar A through transformers, each rated at 4 MVA and 5% reactance. Determine the maximum short circuit MVA with which circuit breakers on the outgoing side of the transformers have to deal.

The bus bars of a power station are in two sections A and B separated by a reactor. Connected in section A are two 12 MVA generators of 15% reactance each and to B, 8 MVA generator of reactance 10%. The reactor is rated 8 MVA and 15% reactance. Two feeders are connected to bus bar A through transformers, each rated at 4 MVA and 5% reactance. Determine the maximum short circuit MVA with which circuit breakers on the outgoing side of the transformers have to deal.

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

Chapter7: Symmetrical Faults

Section: Chapter Questions

Problem 7.21MCQ

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