A three phase transmission line is 390 km long. The series impedance of the line is (0.315+ j0.653) Q/km and the susceptance is (j2.74x e(-6)) S/km. The voltage at the sending end is 430 kV. (a)Find the sending end current and receiving end voltage when there is no load on the line. (b)Suppose a medium transmission line and determine the maximum permissible line length if the receiving end at no-voltage is not to exceed 400 kV.

A three phase transmission line is 390 km long. The series impedance of the line is (0.315+ j0.653) Q/km and the susceptance is (j2.74x e(-6)) S/km. The voltage at the sending end is 430 kV. (a)Find the sending end current and receiving end voltage when there is no load on the line. (b)Suppose a medium transmission line and determine the maximum permissible line length if the receiving end at no-voltage is not to exceed 400 kV.

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 5.11P: A 40-km, 220-kV, 60-Hz, three-phase overhead transmission line has a per-phase resistance of...

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