A 3-phase, 11 kV, 50 Hz, 2 km long transmission line supplies a 10 MVA load at rated voltage. The line resistance is 0.6 0/km and an inductance is 5 mH/km. Using the approximation from part (a), calculate AV if the load power factor is: (1) 0.8 lagging, (i) unity, (iii) 0.8 leading. Compare the obtained results and draw appropriate conclusions. At what load power factor there would be no voltage drop along the line?

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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A 3-phase, 11 kV, 50 Hz, 2 km long transmission line supplies a 10 MVA
load at rated voltage. The line resistance is 0.6 Q/km and an inductance is
5 mH/km. Using the approximation from part (a), calculate AV if the load
power factor is: (i) 0.8 lagging, (ii) unity, (iii) 0.8 leading. Compare the
obtained results and draw appropriate conclusions. At what load power
factor there would be no voltage drop along the line?
Transcribed Image Text:A 3-phase, 11 kV, 50 Hz, 2 km long transmission line supplies a 10 MVA load at rated voltage. The line resistance is 0.6 Q/km and an inductance is 5 mH/km. Using the approximation from part (a), calculate AV if the load power factor is: (i) 0.8 lagging, (ii) unity, (iii) 0.8 leading. Compare the obtained results and draw appropriate conclusions. At what load power factor there would be no voltage drop along the line?
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