For the power system shown at right the impedance matrix (2 is j0.4 3 j0.5 j0.2 0.164 0.101 0.0692 =j 0.101 0.246 0.120 bus [0.0692 0.120 0.145 j0.25 j0.2 Pre-fault all bus voltages are 1 pu. Then a three-phase fault to ground occurs at bus 2. What are the post-fault per-unit bus voltages? (Express in polar phasor form |V|Z0°) 1pu 1pu

For the power system shown at right the impedance matrix (2 is j0.4 3 j0.5 j0.2 0.164 0.101 0.0692 =j 0.101 0.246 0.120 bus [0.0692 0.120 0.145 j0.25 j0.2 Pre-fault all bus voltages are 1 pu. Then a three-phase fault to ground occurs at bus 2. What are the post-fault per-unit bus voltages? (Express in polar phasor form |V|Z0°) 1pu 1pu

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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A three-phase synchronous generator produces 10 MVA power under a rated voltage of 10 kV. Zero sequence component reactance of this generator is given as X0 = j0.1 pu, positive sequence component reactance X1 = j0.1 pu and negative sequence component reactance X2 = j0.1 pu, and the star point of this generator is given as Xn = j1 Ω grounded. a) Calculate the real value of the fault current that will occur in the three-phase short circuit fault at the output of this generator. (The actual value of the fault current will be calculated and entered AS INTENT (such as 3550. Values entered as per unit will not be accepted.) b) Calculate the real value of the fault current that will occur in the case of single phase-ground short circuit fault at the output terminal ends of this generator. (The actual value of the fault current will be calculated and INTENT (such as 3550) will be entered. Values entered as per unit will not be accepted.) c) Calculate the real value of the fault current…
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33
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