The Research of Asymmetric Parallel Gaps in EHV Transmission Lines

Jin-bo WU, Zhan-qing YU, Hong-jun ZHEN, Chao SU, Rong ZENG, Jin-liang HE

Abstract


As a new kind of lightning protection, parallel gaps have simple structure, easy installation, good economy, and many other advantages. The traditional parallel gap due to the large short distance, can lead to lightning trip-out rate increases. Based on arc movement characteristics this paper presents a design of new type of parallel gaps and the analysis of the surface field strength, and the verification test, design a new kind of parallel gap are obtained.

Keywords


Arc movement, Parallel gaps, Surface electrical field


DOI
10.12783/dtetr/eeta2017/7703

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