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The three-phase power and line-line ratings of the electric power system shown in Figure 30 are given below. Vg OBH G T2 2 Vm Line M FIGURE 30 One-line diagram for Problem 3.15 G₁: 60 MVA 20 kV X = 9% T₁: 50 MVA 20/200 kV X = 10% T2: 50 MVA 200/20 kV X = 10% M: 43.2 MVA 18 kV X = 8% Line: 200 kV Z 120+j200 $2 (a) Draw an impedance diagram showing all impedances in per unit on a 100-MVA base. Choose 20 kV as the voltage base for generator. (b) The motor is drawing 45 MVA, 0.80 power factor lagging at a line-to-line ter- minal voltage of 18 kV. Determine the terminal voltage and the internal emf of the generator in per unit and in kV.

The three-phase power and line-line ratings of the electric power system shown in Figure 30 are given below. Vg OBH G T2 2 Vm Line M FIGURE 30 One-line diagram for Problem 3.15 G₁: 60 MVA 20 kV X = 9% T₁: 50 MVA 20/200 kV X = 10% T2: 50 MVA 200/20 kV X = 10% M: 43.2 MVA 18 kV X = 8% Line: 200 kV Z 120+j200 $2 (a) Draw an impedance diagram showing all impedances in per unit on a 100-MVA base. Choose 20 kV as the voltage base for generator. (b) The motor is drawing 45 MVA, 0.80 power factor lagging at a line-to-line ter- minal voltage of 18 kV. Determine the terminal voltage and the internal emf of the generator in per unit and in kV.

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 three-phase power and line-line ratings of the electric power system shown in Figure 30 are given below. Vg OBH G T2 2 Vm Line M FIGURE 30 One-line diagram for Problem 3.15 G₁: 60 MVA 20 kV X = 9% T₁: 50 MVA 20/200 kV X = 10% T2: 50 MVA 200/20 kV X = 10% M: 43.2 MVA 18 kV X = 8% Line: 200 kV Z 120+j200 $2 (a) Draw an impedance diagram showing all impedances in per unit on a 100-MVA base. Choose 20 kV as the voltage base for generator. (b) The motor is drawing 45 MVA, 0.80 power factor lagging at a line-to-line ter- minal voltage of 18 kV. Determine the terminal voltage and the internal emf of the generator in per unit and in kV.
Transcribed Image Text:The three-phase power and line-line ratings of the electric power system shown in Figure 30 are given below. Vg OBH G T2 2 Vm Line M FIGURE 30 One-line diagram for Problem 3.15 G₁: 60 MVA 20 kV X = 9% T₁: 50 MVA 20/200 kV X = 10% T2: 50 MVA 200/20 kV X = 10% M: 43.2 MVA 18 kV X = 8% Line: 200 kV Z 120+j200 $2 (a) Draw an impedance diagram showing all impedances in per unit on a 100-MVA base. Choose 20 kV as the voltage base for generator. (b) The motor is drawing 45 MVA, 0.80 power factor lagging at a line-to-line ter- minal voltage of 18 kV. Determine the terminal voltage and the internal emf of the generator in per unit and in kV.
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