Q2// For the three-phase power system shown in Fig. (1), the reactances of its elements are given in per unit based on a common base. Find the fault current in per unit when a symmetrical three-phase fault occurs at bus 27. Assume the prefault voltages are all 10 pus X.'- j0.6 pu ww jo.2 pu XAL m 10.3 pu Fig.(1) Na j9.3 pu T: 3ww. 10.15 pu Xi-j0.25 pu

Q2// For the three-phase power system shown in Fig. (1), the reactances of its elements are given in per unit based on a common base. Find the fault current in per unit when a symmetrical three-phase fault occurs at bus 27. Assume the prefault voltages are all 10 pus X.'- j0.6 pu ww jo.2 pu XAL m 10.3 pu Fig.(1) Na j9.3 pu T: 3ww. 10.15 pu Xi-j0.25 pu

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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j0.2 For the following power system the impedance matrix is given below. Initially all bus voltages are 1 pu. Then a three-phase fault occurs at bus (2). j0.25 j0.2 (3) (1) j0.1 : (a) What is the fault current? (2) j0.125 j0.1 (b) What are the post-fault bus voltages? 3. 0.0625 0.02083 0.02083' Zbus 0.02083 0.07044 0.02282 0.02083 0.02282 0.06091
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