A 132 kV circuit breaker interrupts the fault current flowing into a symmetrical three-phase to each fault at current zero. The fault infeed is 2500 MVA, and the shunt capacitance C on the source side is 0.03 µF, The system frequency is 50 Hz. (1) Calculate the maximum voltage across the circuit breaker and the restriking-voltage frequency. (2) If the fault current is prematurely chopped at 500 A, estimate the maximum voltage across the circuit breaker on the first current chop. (3) Derive and plot the transient recovery voltage for different scenarios above.

A 132 kV circuit breaker interrupts the fault current flowing into a symmetrical three-phase to each fault at current zero. The fault infeed is 2500 MVA, and the shunt capacitance C on the source side is 0.03 µF, The system frequency is 50 Hz. (1) Calculate the maximum voltage across the circuit breaker and the restriking-voltage frequency. (2) If the fault current is prematurely chopped at 500 A, estimate the maximum voltage across the circuit breaker on the first current chop. (3) Derive and plot the transient recovery voltage for different scenarios above.

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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