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Example 8.4 The one line diagram of a simple three-bus power system is shown in the figure. Each generator is j0.1 j0.2 represented by an emf behind the transient reactance. All impedances are expressed in per unit j0.1 j0.2 in a common 100 MVA base, and for simplicity, j0.8 resistances are neglected. The following assumption 2 are made: j0.4 j0.4 •shunt capacitances are neglected and the system is considered on no load. •all generators are running at their rated voltage 3 and rated frequency with their emf in phase Determine the fault current, the bus voltages and the line currents during the fault when a balanced three-phase fault with a fault impedance Z; = j0.16 %3D p.u. fault occurs on bus 3

Example 8.4 The one line diagram of a simple three-bus power system is shown in the figure. Each generator is j0.1 j0.2 represented by an emf behind the transient reactance. All impedances are expressed in per unit j0.1 j0.2 in a common 100 MVA base, and for simplicity, j0.8 resistances are neglected. The following assumption 2 are made: j0.4 j0.4 •shunt capacitances are neglected and the system is considered on no load. •all generators are running at their rated voltage 3 and rated frequency with their emf in phase Determine the fault current, the bus voltages and the line currents during the fault when a balanced three-phase fault with a fault impedance Z; = j0.16 %3D p.u. fault occurs on bus 3

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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Example 8.4 The one line diagram of a simple three-bus power system is shown in the figure. Each generator is j0.1 j0.2 represented by an emf behind the transient reactance. All impedances are expressed in per unit j0.1 j0.2 in a common 100 MVA base, and for simplicity, j0.8 resistances are neglected. The following assumption 2 are made: j0.4 j0.4 •shunt capacitances are neglected and the system is considered on no load. •all generators are running at their rated voltage 3 and rated frequency with their emf in phase Determine the fault current, the bus voltages and the line currents during the fault when a balanced three-phase fault with a fault impedance Z; = j0.16 %3D p.u. fault occurs on bus 3
Transcribed Image Text:Example 8.4 The one line diagram of a simple three-bus power system is shown in the figure. Each generator is j0.1 j0.2 represented by an emf behind the transient reactance. All impedances are expressed in per unit j0.1 j0.2 in a common 100 MVA base, and for simplicity, j0.8 resistances are neglected. The following assumption 2 are made: j0.4 j0.4 •shunt capacitances are neglected and the system is considered on no load. •all generators are running at their rated voltage 3 and rated frequency with their emf in phase Determine the fault current, the bus voltages and the line currents during the fault when a balanced three-phase fault with a fault impedance Z; = j0.16 %3D p.u. fault occurs on bus 3
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