A 500-kV, 60-Hz, 3-phase completely transposed overhead line has the resistance R = 0.0201/km, Ds = 0.0745m, r = 0.08m and length 180 km. The line has flat horizontal phase spacing with 5m between adjacent conductors. The line delivers 1600 MW to the receiving-end at 475 kV and 0.95 power factor leading at full load. Calculate a) the exact ABCD parameters of the line, [3 marks]b) the sending-end voltage and current, [3 marks]c) the sending-end real power, power factor and complex power, [2 marks]d) the full-load line losses and efficiency, and [1 mark]e) the percent voltage regulation. [1 mark]
A 500-kV, 60-Hz, 3-phase completely transposed overhead line has the resistance R = 0.0201/km, Ds = 0.0745m, r = 0.08m and length 180 km. The line has flat horizontal phase spacing with 5m between adjacent conductors. The line delivers 1600 MW to the receiving-end at 475 kV and 0.95 power factor leading at full load. Calculate a) the exact ABCD parameters of the line, [3 marks]b) the sending-end voltage and current, [3 marks]c) the sending-end real power, power factor and complex power, [2 marks]d) the full-load line losses and efficiency, and [1 mark]e) the percent voltage regulation. [1 mark]
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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Question
A 500-kV, 60-Hz, 3-phase completely transposed overhead line has the resistance R = 0.0201/km, Ds =
0.0745m, r = 0.08m and length 180 km. The line has flat horizontal phase spacing with 5m between
adjacent conductors. The line delivers 1600 MW to the receiving-end at 475 kV and 0.95 power factor
leading at full load. Calculate
a) the exact ABCD parameters of the line, [3 marks]
b) the sending-end voltage and current, [3 marks]
c) the sending-end real power, power factor and complex power, [2 marks]
d) the full-load line losses and efficiency, and [1 mark]
e) the percent voltage regulation. [1 mark]
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