Influence of Overhead Ground Wire Height and Impulse Ground Resistance on Lightning Protection Performance of Distribution Line

Abstract:

Since distribution lines have relatively weak insulation compared to power transmission lines, it is more liable to lightning damages. This paper reports a study of how overhead ground wire height and impulse ground resistance affect the lightning protection performance. The results obtained in this paper show that high overhead ground wire worsen the lightning protection performance while reducing the impulse ground resistance improves the lightning protection performance. Therefore, it is recommended to set the overhead ground wire lower and take necessary measures to reduce impulse ground resistance. The results obtained also confirm the crucial role of the overhead ground wire as a protection of distribution lines.

• Periodical: Advanced Materials Research (Volumes 1092-1093)
• Pages: 281-287
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1092-1093.281
• Online since: March 2015
• Authors: Yao Zhang Yu, Jun Kang Ni*, Jun Yu Han, Bin Ren, Ao An Li, Chong Xin Liu
• Keywords: Impulse Ground Resistance, Lightning Withstand Level, Overhead Ground Wire, Trip-Out Rate

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