3.15. The three-phase power and line-line ratings of the electric power system shown in Figure 30 are given below. T2 Vm Line 2. FIGURE 30 One-line diagram for Problem 3.15 G : T1 : T2 : M: 60 MVA X = 9% X 10% X 10% X = 8% Z = 120 + j200 2 20 kV 50 MVA 20/200 kV %3D 50 MVA 200/20 kV 43.2 MVA 18 kV Line: 200 kV (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.

3.15. The three-phase power and line-line ratings of the electric power system shown in Figure 30 are given below. T2 Vm Line 2. FIGURE 30 One-line diagram for Problem 3.15 G : T1 : T2 : M: 60 MVA X = 9% X 10% X 10% X = 8% Z = 120 + j200 2 20 kV 50 MVA 20/200 kV %3D 50 MVA 200/20 kV 43.2 MVA 18 kV Line: 200 kV (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)

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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