Power transformer A, has Rated power of 150MVA. Line voltage of 330/66 kV Frequency=50Hz Connection Yd1 Z impedance=8% X/R =7.94 To accommodate a higher load a new transformer B,rated 180 MVA, 330/66 kV, 50 Hz,is to be installed in parallel with the existing transformer. Determine the winding resistance and the liquid reactants of the second transformer in Ohms,referred to the high voltage side,which will result in the two transformers sharing the load proportionally to their apparent power ratings.

Power transformer A, has Rated power of 150MVA. Line voltage of 330/66 kV Frequency=50Hz Connection Yd1 Z impedance=8% X/R =7.94 To accommodate a higher load a new transformer B,rated 180 MVA, 330/66 kV, 50 Hz,is to be installed in parallel with the existing transformer. Determine the winding resistance and the liquid reactants of the second transformer in Ohms,referred to the high voltage side,which will result in the two transformers sharing the load proportionally to their apparent power ratings.

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 3.14P: A single-phase 50-kVA,2400/240-volt,60-Hz distribution transformer is used as a step-down...

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