南方电网技术2017，Vol.11Issue(8)：55-60,6.DOI:10.13648/j.cnki.issn1674-0629.2017.08.008
GIL中电极覆膜对金属微粒表面电场及受力的影响
Effect of Dielectrically Coated Electrode on Surface Electric Field and Force of Metal Particles in GIL
摘要
Abstract
It is of great significance to study the electric field and force of metal particles on the dielectrically coated electrodes of gas insulation line ( GIL) to investigate the reasons of coating enhancing the lifting field strength of particles.Calculation models of the e-lectric field distribution of particles on electrodes with or without dielectric coating are established respectively.Electric field calcula-tion results show that the maximum value of the electric field under bare electrode appears at the top of the particle and is subjected to an upward electric field.While the maximum value of the electric field under dielectrically coated electrode appears between the parti-cle and the coating, and the direction of the electric field force is related to the electric charge, and there are two kinds of situations, downward or upward.The partial discharge between the particles and the coating is the main mechanism of particle charging under the dielectrically coated electrode, when the electric field strength reaches the lifting field strength under bare electrode, the particle may still be uncharged, but it is subjected to the downward electric field force.Therefore, the decrease of electric charge and the downward of the electric field force are the reasons enabling coating to enhance the particle lifting field strength.关键词
气体绝缘金属封闭线路(GIL)/电极覆膜/金属微粒/电场/受力Key words
gas insulation line (GIL)/dielectrically coated electrodes/metal particles/electrical field/force分类
信息技术与安全科学引用本文复制引用
律方成,董蒙,颜湘莲,刘宏宇,李志兵..GIL中电极覆膜对金属微粒表面电场及受力的影响[J].南方电网技术,2017,11(8):55-60,6.基金项目
国家重点研发计划(2017YFB0902504).Supported by the National Key Research and Develop-ment Plan (2017YFB0902504). （2017YFB0902504）
