Paper Title:

Analysis on Altitude Correction Factor of 750kV Transmission Line Conductors Corona Inception Voltage

Periodical Applied Mechanics and Materials (Volumes 385 - 386)
Main Theme Applied Scientific Research and Engineering Developments for Industry
Chapter Chapter 7: Power System and Energy Engineering, its Applications
Edited by Zhifeng Liu
Pages 1108-1111
DOI 10.4028/www.scientific.net/AMM.385-386.1108
Citation Qing Zhong Geng et al., 2013, Applied Mechanics and Materials, 385-386, 1108
Online since August, 2013
Authors Qing Zhong Geng, Fang Cheng Lü, Zhu Lei, Zhu Jun, Yun Peng Liu
Keywords Corona Cage, Corona Inception Voltages, High Altitude, Resistive Current, Six-Bundle Conductors, UV Imaging Detector
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In order to study the effect of attitude for corona inception voltage of AC transmission lines conductors in the altitude areas ranging from 0 to 3000 meters, conducted a series of tests about the corona characteristics of AC six-bundle conductors based on the mobile corona cage at Wuhan, Xining and Haibei respectively. Recorded the number of photons after conductors corona discharge by ultraviolet imaging detector. Conductor corona inception voltages were acquired by the tangent method. The measurement result shows that conductors corona inception voltage decrease with increasing altitude. Corona inception voltage is reduced about 8.12% if altitude rises 1000m. The exponential and linear correction equations suitable for 6 × LGJ-400/50 conductors are introduced. The maximum tolerance is less than 5% and meets the engineering needs.

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