中国电机工程学报2016，Vol.36Issue(24)：6718-6726,9.DOI:10.13334/j.0258-8013.pcsee.161823
直流GIL内金属微粒对表面电荷积聚影响的三维仿真及实验研究
3D Simulation and Experimental Study of Metal Particles’ Effect in DC GIL on Surface Charge Accumulation
摘要
Abstract
Regarding the metallic particle pollution within DC GIL, a simulation model was established to study the effect of the particles on the surface charge accumulation. The model is based on Maxwell equations with the generation, recombination, migration and diffusion of the positive/negative ions at the gas side being taken into account. The COMSOL software was used to calculate the surface charge accumulation influenced by the insulator shape, the adhering attitude of metal particles and the gas state in the three-dimensional environment. An experimental platform, for surface charge measurement with consideration of the metal particles, had been set up to approve the typical simulation results. The study shows that, the smaller the base angle, the more charge accumulation on the insulator surface, and the charge amount may have a surge with the adhesion of metal particles, in which the one along the tangential direction of the electric field renders the most obvious effect. Also, the change of gas state will vary the accumulation and the surface charge is much likely to accumulate in a low gas pressure.关键词
直流GIL/表面电荷积聚/微粒黏附/微观机制/三维仿真Key words
DC GIL/surface charge accumulation/particle adhesion/microcosmic mechanism/three-dimensional simulation分类
信息技术与安全科学引用本文复制引用
王志远,王健,李庆民,刘思华..直流GIL内金属微粒对表面电荷积聚影响的三维仿真及实验研究[J].中国电机工程学报,2016,36(24):6718-6726,9.基金项目
国家重点基础研究发展计划项目(973项目)(2014CB239502)。 The National Basic Research Program of China (973 Program)(2014CB239502) （973项目）
