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2. The single-line diagram of a power system is shown in Figure A1-2 below. The three-phase power and line-line ratings are also given below: G: 60 MVA 20 kV X= 9% T1: T2: 50 MVA 20/200 kV X= 10% 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 terminal voltage of 18 kV. Determine the terminal voltage and the internal EMF of the generator in per unit and in kV. T2 2 Vm Line G M Figure A1-2

2. The single-line diagram of a power system is shown in Figure A1-2 below. The three-phase power and line-line ratings are also given below: G: 60 MVA 20 kV X= 9% T1: T2: 50 MVA 20/200 kV X= 10% 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 terminal voltage of 18 kV. Determine the terminal voltage and the internal EMF of the generator in per unit and in kV. T2 2 Vm Line G M Figure A1-2

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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2. The single-line diagram of a power system is shown in Figure A1-2 below. The three-phase power and line-line ratings are also given below: G: 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 N (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 terminal voltage of 18 kV. Determine the terminal voltage and the internal EMF of the generator in per unit and in kV. T1 T2 Vm BE 38 Line G M Figure A1-2
Transcribed Image Text:2. The single-line diagram of a power system is shown in Figure A1-2 below. The three-phase power and line-line ratings are also given below: G: 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 N (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 terminal voltage of 18 kV. Determine the terminal voltage and the internal EMF of the generator in per unit and in kV. T1 T2 Vm BE 38 Line G M Figure A1-2
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