single circuit three-phase line, 60 Hz, 18 km has a total resistance and inductive reactance of 4.242 ohm and7.451 ohm per phase respectively. The line delivers 2500 kW to a balanced load at 11 kV. (1) determine the sending-end voltage when the power factor is (i) 80% lagging, (i) unity, and (ii) 90 % leading,

Power System Analysis and Design (MindTap Course List)
6th Edition
ISBN:9781305632134
Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma
Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma
Chapter5: Transmission Lines: Steady-state Operation
Section: Chapter Questions
Problem 5.25P
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single circuit three-phase line, 60 Hz, 18 km has a total resistance and inductive reactance of 4.242 ohm and7.451 ohm per phase respectively. The line delivers 2500 kW to a balanced load at 11 kV. (1) determine the sending-end voltage when the power factor is (i) 80% lagging, (i) unity, and (ii) 90 % leading, (2) draw the phasor diagrams of the line at the above (3) determine the voltage regulation of the line at the above power factors.
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