A three-phase 630 kV, 50 Hz, 400 km completely transposed long transmission line, has the following positive sequence impedance and admittance parameters. z = 0.015 + j 0.25 0/km y = j 4 x 10-6 S/km Identical shunt reactors are connected from each phase conductor to neutral at both ends of the line providing 80% compensation during light load conditions. The reactors are removed during heavy load conditions. Full load is 0.75 kA at 0.95 lagging power factor and at 600 kV. Assuming the sending end voltage remains constant. Determine the following: 1. Using the equivalent r circuit find the exact ABCD parameters of the transmission line.
A three-phase 630 kV, 50 Hz, 400 km completely transposed long transmission line, has the following positive sequence impedance and admittance parameters. z = 0.015 + j 0.25 0/km y = j 4 x 10-6 S/km Identical shunt reactors are connected from each phase conductor to neutral at both ends of the line providing 80% compensation during light load conditions. The reactors are removed during heavy load conditions. Full load is 0.75 kA at 0.95 lagging power factor and at 600 kV. Assuming the sending end voltage remains constant. Determine the following: 1. Using the equivalent r circuit find the exact ABCD parameters of the transmission 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
Chapter7: Symmetrical Faults
Section: Chapter Questions
Problem 7.6P
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