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The one-line diagram of a power system is shown in the figure below. The 3-ph load is composed of three 4.8-N capacitors in delta connection. The motor draws 50 MW, 0.6 power factor lagging at 20 kV. Use a base of 100 MVA, 20 kV in the generator circuit. Determine the generator and motor internal emfs and the transmission line current. Line M 3-ph Load The three-phase power and line-line ratings are given below: X = 24% X = 6.4% X = 42.35 Q X = 22.5% G:80 MVA 22 kV 22/110 kV 110 kV T1:40 MVA Line: M: 68.85 MVA 20kV The three-phase ratings of the three-winding transformer T2 are: Y-connected 110 kV Primary: Secondary: Tertiary: 40 MVA, 25 MVA, Y-connected 22 kV A-connected 15 MVA, 4.4 kV Neglecting resistance, the leakage impedances are: Zps = 9.6% Zpt = 7.2% Zst = 10% 40 MVA, 40 MVA, 25 MVA, 110 kV 110 kV 22 kV

The one-line diagram of a power system is shown in the figure below. The 3-ph load is composed of three 4.8-N capacitors in delta connection. The motor draws 50 MW, 0.6 power factor lagging at 20 kV. Use a base of 100 MVA, 20 kV in the generator circuit. Determine the generator and motor internal emfs and the transmission line current. Line M 3-ph Load The three-phase power and line-line ratings are given below: X = 24% X = 6.4% X = 42.35 Q X = 22.5% G:80 MVA 22 kV 22/110 kV 110 kV T1:40 MVA Line: M: 68.85 MVA 20kV The three-phase ratings of the three-winding transformer T2 are: Y-connected 110 kV Primary: Secondary: Tertiary: 40 MVA, 25 MVA, Y-connected 22 kV A-connected 15 MVA, 4.4 kV Neglecting resistance, the leakage impedances are: Zps = 9.6% Zpt = 7.2% Zst = 10% 40 MVA, 40 MVA, 25 MVA, 110 kV 110 kV 22 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 one-line diagram of a power system is shown in the figure below. The 3-ph load is composed of three 4.8-0 capacitors in delta connection. The motor draws 50 MW, 0.6 power factor lagging at 20 kV. Use a base of 100 MVA, 20 kV in the generator circuit. Determine the generator and motor internal emfs and the transmission line current. Line M 3-ph Load The three-phase power and line-line ratings are given below: X = 24% 22 kV 22/110 kV G: 80 MVA T1:40 MVA X= 6.4% X= 42.35 Q X = 22.5% Line: 110 kV M: 68.85 MVA 20kV The three-phase ratings of the three-winding transformer T2 are: Y-connected 110 kV Primary: Secondary: 40 MVA, Y-connected 25 MVA, 22 kV Tertiary: A-connected 15 MVA, 4.4 kV Neglecting resistance, the leakage impedances are: 110 kV Zps = 9.6% Zpt = 7.2% Zst = 10% 40 MVA, 40 MVA, 25 MVA, 110 kV 22 kV %3D
Transcribed Image Text:The one-line diagram of a power system is shown in the figure below. The 3-ph load is composed of three 4.8-0 capacitors in delta connection. The motor draws 50 MW, 0.6 power factor lagging at 20 kV. Use a base of 100 MVA, 20 kV in the generator circuit. Determine the generator and motor internal emfs and the transmission line current. Line M 3-ph Load The three-phase power and line-line ratings are given below: X = 24% 22 kV 22/110 kV G: 80 MVA T1:40 MVA X= 6.4% X= 42.35 Q X = 22.5% Line: 110 kV M: 68.85 MVA 20kV The three-phase ratings of the three-winding transformer T2 are: Y-connected 110 kV Primary: Secondary: 40 MVA, Y-connected 25 MVA, 22 kV Tertiary: A-connected 15 MVA, 4.4 kV Neglecting resistance, the leakage impedances are: 110 kV Zps = 9.6% Zpt = 7.2% Zst = 10% 40 MVA, 40 MVA, 25 MVA, 110 kV 22 kV %3D
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