中国电机工程学报Issue(3)：468-477,10.DOI:10.13334/j.0258-8013.pcsee.2014.03.019
伞裙结构对绝缘子表面流注发展特性的影响
Influence of Shed Configuration on Characteristics of Streamer Propagation Along the Insulation Surfaces
摘要
Abstract
The design of shed configuration should consider a number of factors. The reasonable shed configuration can improve flashover voltage of insulator and enhance the reliability of the overhead transmission lines. The paper investigated the influence of shed configuration on development of the predischarge (streamer discharge) and proposed a novel design idea from the perspective of inhibiting streamer discharge. The result shows that the streamer propagated along smooth cylindrical insulator with a ‘surface’ and an ‘air’ component. For the insulators with a shed, the ‘surface’ component never reached the cathode, only the ‘air’ component crossed the gap to reach the cathode. Furthermore, the electric field required for streamer stable propagation along the insulators with a shed was larger than that along smooth cylindrical insulators. The electric field required for streamer stable propagation was in proportion to the protrusion length of insulator shed. Under the same electric field, the streamer propagation velocity was in inverse proportion to the protrusion length of insulator shed. The position of shed also had a great influence on the characteristics of streamer propagation. The more the shed was close to the initiation of streamer, the more difficult the streamer propagates along the insulator surface.关键词
沿面闪络/流注放电/伞裙结构/“三电极”结构/流注传播电场/流注传播速度Key words
surface flashover/streamer discharge/shed configuration/three electrode arrangement/streamer propagation electric field/streamer propagation velocity分类
信息技术与安全科学引用本文复制引用
孟晓波,梅红伟,陈昌龙,王黎明,关志成,周军..伞裙结构对绝缘子表面流注发展特性的影响[J].中国电机工程学报,2014,(3):468-477,10.基金项目
国家重点基础研究发展计划项目(973项目)(2011CB209406)；国家自然科学基金项目(50777033，50977048)。The National Basic Research Program of China (973 Program)(2011CB209406) （973项目）
Project Supported by National Natural Science Foundation of China (50777033,50977048) （50777033,50977048）
