1. Estimate the corona loss for a three-phase, 110 kV, 50 Hz, 150 km long transmission line consisting of three conductors each of 10 mm diameter and spaced 2-5 m apart in an equilateral triangle formation. The temperature of air is 30°C and the atmospheric pressure is 750 mm of mercury. Take irregularity factor as 0-85. Ionisation of air may be assumed to take place at a maximum voltage gradient of 30 kV/ [316-8 kW] cm.

1. Estimate the corona loss for a three-phase, 110 kV, 50 Hz, 150 km long transmission line consisting of three conductors each of 10 mm diameter and spaced 2-5 m apart in an equilateral triangle formation. The temperature of air is 30°C and the atmospheric pressure is 750 mm of mercury. Take irregularity factor as 0-85. Ionisation of air may be assumed to take place at a maximum voltage gradient of 30 kV/ [316-8 kW] cm.

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

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TUTORIAL PROBLEMS
1. Estimate the corona loss for a three-phase, 110 kV, 50 Hz, 150 km long transmission line consisting of
three conductors each of 10 mm diameter and spaced 2-5 m apart in an equilateral triangle formation.
The temperature of air is 30°C and the atmospheric pressure is 750 mm of mercury. Take irregularity
factor as 0-85. Ionisation of air may be assumed to take place at a maximum voltage gradient of 30 kV/
[316-8 kW]
cm.

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