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The one-line diagram of a simple four-bus power system is shown in the Figure. Each generator is represented by an emf behind the transient reactance. All impedances are expressed in per unit on a common MVA base. All resistances and shunt capacitances are neglected. The generators are operating on no load at their rated voltage with their emfs in phase. A bolted three-phase fault occurs at bus 4. (a) Using reduction method obtain the impedance to the point of fault and the fault current in per unit. (b) Determine the bus voltages VBus 1,2,3 and 4 during fa (c) Determine the line current of Ig1 and Ig2 during fault

The one-line diagram of a simple four-bus power system is shown in the Figure. Each generator is represented by an emf behind the transient reactance. All impedances are expressed in per unit on a common MVA base. All resistances and shunt capacitances are neglected. The generators are operating on no load at their rated voltage with their emfs in phase. A bolted three-phase fault occurs at bus 4. (a) Using reduction method obtain the impedance to the point of fault and the fault current in per unit. (b) Determine the bus voltages VBus 1,2,3 and 4 during fa (c) Determine the line current of Ig1 and Ig2 during fault

Introductory Circuit Analysis (13th Edition)
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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The one-line diagram of a simple four-bus power system is shown in the Figure. Each generator is represented by an emf behind the transient reactance. All impedances are expressed in per unit on a common MVA base. All resistances and shunt capacitances are neglected. The generators are operating on no load at their rated voltage with their emfs in phase. A bolted three-phase fault occurs at bus 4. (a) Using reduction method obtain the impedance to the point of fault and the fault current in per unit. G1 j0.20 (c) Determine the line current of Igl and Ig2 during fault (b) Determine the bus voltages VBus 1,2,3 and 4 during fault. j0.20 j0.20 1 3 j0.15 (G2) j0.20 j0.50 2 j0.30 j0.19
Transcribed Image Text:The one-line diagram of a simple four-bus power system is shown in the Figure. Each generator is represented by an emf behind the transient reactance. All impedances are expressed in per unit on a common MVA base. All resistances and shunt capacitances are neglected. The generators are operating on no load at their rated voltage with their emfs in phase. A bolted three-phase fault occurs at bus 4. (a) Using reduction method obtain the impedance to the point of fault and the fault current in per unit. G1 j0.20 (c) Determine the line current of Igl and Ig2 during fault (b) Determine the bus voltages VBus 1,2,3 and 4 during fault. j0.20 j0.20 1 3 j0.15 (G2) j0.20 j0.50 2 j0.30 j0.19
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