A 110 kV, three-phase, 50 Hz, 150 km long overhead line consists of three 1.8 cm diameter stranded copper conductors spaced in 2.5 m delta arrangement. Assume surface irregularity factor m = 0.89 (roughness factor), m for local corona = 0.74 and m for general corona is 0.84. Determine the following at 290° C and barometric pressure of 76 cm Hg. (i) Disruptive voltage (ii) Visual corona voltage for local corona (iii) Visual corona voltage for general corona

A 110 kV, three-phase, 50 Hz, 150 km long overhead line consists of three 1.8 cm diameter stranded copper conductors spaced in 2.5 m delta arrangement. Assume surface irregularity factor m = 0.89 (roughness factor), m for local corona = 0.74 and m for general corona is 0.84. Determine the following at 290° C and barometric pressure of 76 cm Hg. (i) Disruptive voltage (ii) Visual corona voltage for local corona (iii) Visual corona voltage for general corona

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

Chapter4: Transmission Line Parameters

Section: Chapter Questions

Problem 4.8P: A 60-Hz, single-phase two-wire overhead line has solid cylindrical copper conductors with a 1.5 cm...

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