A 300MVA, 20KV three-phase generator has a reactance of 20%. The generator supplies a number of synchronous motors over a 64Km transmission line having transformers at both ends as shown on the one line diagram. The motors all rated 13.2KV are represented by two equivalent motors. Rated inputs to the motors are 200MVA and 100MVA for Ml and M2 respectively. For both motors X= 20%. The three-phase transformers T1 is rated 350MVA, 20/230KV with leakage reactance of 10%. Transformer T2 is composed of three single-phase transformers each rated 127/13.2KV, 100MVA with leakage reactance of 10%, series reactance of transmission line is 0.50/Km. Draw the reactance diagram with all reactance marked in per unit, select the generator rating as a base.

A 300MVA, 20KV three-phase generator has a reactance of 20%. The generator supplies a number of synchronous motors over a 64Km transmission line having transformers at both ends as shown on the one line diagram. The motors all rated 13.2KV are represented by two equivalent motors. Rated inputs to the motors are 200MVA and 100MVA for Ml and M2 respectively. For both motors X= 20%. The three-phase transformers T1 is rated 350MVA, 20/230KV with leakage reactance of 10%. Transformer T2 is composed of three single-phase transformers each rated 127/13.2KV, 100MVA with leakage reactance of 10%, series reactance of transmission line is 0.50/Km. Draw the reactance diagram with all reactance marked in per unit, select the generator rating as a base.

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

Chapter6: Power Flows

Section: Chapter Questions

Problem 6.49P

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