A 3,000-kw 750-volt d-c 60-cycle six-phase synchronous converter is fed from a three-phase 23,000-volt high-voltage line through &bank of three transformers that are connected in Δ on the high side and diametrical on the low side. Calculate: (D) the voltage of each transformer secondary coil; (E) the a-c slip-ring current; (F) the ratio of transformation of each of the three transformers.

A 3,000-kw 750-volt d-c 60-cycle six-phase synchronous converter is fed from a three-phase 23,000-volt high-voltage line through &bank of three transformers that are connected in Δ on the high side and diametrical on the low side. Calculate: (D) the voltage of each transformer secondary coil; (E) the a-c slip-ring current; (F) the ratio of transformation of each of the three transformers.

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 3.34P: Three single-phase, two-winding transformers, each rated 450MVA,20kV/288.7kV, with leakage reactance...

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