B: A single circuit three-phase line, 60 Hz, 18 km has a total resistance and inductive reactance of 4.242 ohm and 7.451 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, (ii) unity, and (iii) 90 % leading. (2) draw the phasor diagrams of the line at the above power factors. (3) determine the voltage regulation of the line at the above power factors.

B: A single circuit three-phase line, 60 Hz, 18 km has a total resistance and inductive reactance of 4.242 ohm and 7.451 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, (ii) unity, and (iii) 90 % leading. (2) draw the phasor diagrams of the line at the above power factors. (3) determine the voltage regulation of the line at the above power factors.

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

Chapter3: Power Transformers

Section: Chapter Questions

Problem 3.29P: Consider three ideal single-phase transformers (with a voltage gain of ) put together as ...

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