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j0.1 j0.2 (O j0.1 j0.8 j0.2 FIGURE 9.1 2 j0.4 j0.4 The impedance diagram of a simple power system. 3

j0.1 j0.2 (O j0.1 j0.8 j0.2 FIGURE 9.1 2 j0.4 j0.4 The impedance diagram of a simple power system. 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
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j0.1 j0.2 () j0.1 j0.2 j0.8 FIGURE 9.1 j0.4 j0.4 The impedance diagram of a simple power system. 3 产产
Transcribed Image Text:j0.1 j0.2 () j0.1 j0.2 j0.8 FIGURE 9.1 j0.4 j0.4 The impedance diagram of a simple power system. 3 产产
The one-line diagram of a simple three-bus power system is shown in Figure 9.1. Each generator is represented by an emf behind the transient reactance. All impedances are expressed in per unit on a common 100 MVA base, and for sim- plicity, resistances are neglected. The following assumptions are made. (i) Shunt capacitances are neglected and the system is considered on no-load. (ii) All generators are running at their rated voltage and rated frequency with their emfs 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 Zf = 0.16 per unit %3D occurs on Bus 3.
Transcribed Image Text:The one-line diagram of a simple three-bus power system is shown in Figure 9.1. Each generator is represented by an emf behind the transient reactance. All impedances are expressed in per unit on a common 100 MVA base, and for sim- plicity, resistances are neglected. The following assumptions are made. (i) Shunt capacitances are neglected and the system is considered on no-load. (ii) All generators are running at their rated voltage and rated frequency with their emfs 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 Zf = 0.16 per unit %3D occurs on Bus 3.
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