A 1000-MVA 20-kV, 60-Hz three-phase generator is connected through a 1000-MVA 20-kV A/345-kV Y transformer to a 345-kV circuit breaker and a 345-kV transmission line. The generator reactances are X = 0.17, X, = 0.30, and X4 = 1.5 per unit, and its time constants are T = 0.05, T, = 1.0, and TA = 0.10 s. The transformer series reactance is 0.10 per unit; transformer losses and exciting current are neglected. A three-phase short-circuit occurs on the line side of the circuit breaker when the gener- ator is operated at rated terminal voltage and at no-load. The breaker interrupts the fault 3 cycles after fault inception. Determine (a) the subtransient current through

A 1000-MVA 20-kV, 60-Hz three-phase generator is connected through a 1000-MVA 20-kV A/345-kV Y transformer to a 345-kV circuit breaker and a 345-kV transmission line. The generator reactances are X = 0.17, X, = 0.30, and X4 = 1.5 per unit, and its time constants are T = 0.05, T, = 1.0, and TA = 0.10 s. The transformer series reactance is 0.10 per unit; transformer losses and exciting current are neglected. A three-phase short-circuit occurs on the line side of the circuit breaker when the gener- ator is operated at rated terminal voltage and at no-load. The breaker interrupts the fault 3 cycles after fault inception. Determine (a) the subtransient current through

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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