20MVA, 12.2KV, 0.8 PF lagging Y- connected SG has a negligible armature resistance and syn. Reactance of 8.2Ω, the generator is connected in parallel with a 60Hz 12.2Kv infinite bus that is capable of supplying any real or reactive power with no change in frequency or terminal voltage. A) find the internal generated voltage at rated condition. B) what is the armature rated current. C) suppose that the generator is initially operating at rated condition. If the internal generated voltage is decreased by 5%, what is will be the new armature current?

20MVA, 12.2KV, 0.8 PF lagging Y- connected SG has a negligible armature resistance and syn. Reactance of 8.2Ω, the generator is connected in parallel with a 60Hz 12.2Kv infinite bus that is capable of supplying any real or reactive power with no change in frequency or terminal voltage. A) find the internal generated voltage at rated condition. B) what is the armature rated current. C) suppose that the generator is initially operating at rated condition. If the internal generated voltage is decreased by 5%, what is will be the new armature current?

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

Chapter3: Power Transformers

Section: Chapter Questions

Problem 3.38P: Consider a three-phase generator rated 300MVA,23kV, supplying a system load of 240 MA and 0.9 power...

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