A three-phase transmission line is 10 km long. It is supplying a load of 250 MW with a lagging power factor of 0.8. The receiving line-to-line end voltage is kept constant at 230 kV. The characteristics parameters of the transmission line are: (b) r = 0.5 Q x = 1.5 N (i) Determine the total impedance of the transmission line. (ii) Determine the voltage regulation. (iii) Determine the efficiency of the transmission line. (iv) Determine the voltage regulation if the system has unity power factor.

A three-phase transmission line is 10 km long. It is supplying a load of 250 MW with a lagging power factor of 0.8. The receiving line-to-line end voltage is kept constant at 230 kV. The characteristics parameters of the transmission line are: (b) r = 0.5 Q x = 1.5 N (i) Determine the total impedance of the transmission line. (ii) Determine the voltage regulation. (iii) Determine the efficiency of the transmission line. (iv) Determine the voltage regulation if the system has unity power factor.

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 5.64P

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