中国电机工程学报Issue(15)：3971-3978,8.DOI:10.13334/j.0258-8013.pcsee.2015.15.028
考虑非弹性随机碰撞与SF6/N2混合气体影响的直流GIL球形金属微粒运动行为研究
Motion Analysis of Spherical Conducting Particle in DC GIL Considering the Influence of Inelastic Random Collisions and SF6/N2 Gaseous Mixture
摘要
Abstract
ABSTRACT:To solve the problem of metal-particles pollution in DC gas insulated metal enclosed transmission line(GIL), in a more realistic situation of coaxial cylindrical electrodes, the motion analysis of spherical metal particle was made in DC GIL structure. Based on the theory of fluid mechanics and considering the SF6/N2 mixtures parameters, analysis of the flow resistance in the process of particle movement was proposed. Based on the collision theory of elastic mechanics and considering the random effects caused by roughness of metal surface, analysis of the collides between the particle and the conductor or the shell was also proposed. On the basis of these two factors, the motion model of spherical metal particle in DC GIL was established and the experimental results validate the accuracy of the model. Furthermore, the motion trails of the particle were simulated based on the concept of particle vitality proposed according to the distribution of particle movement. It is observed that the resonant frequency of the particle between the conductor and the shell decreases with particle radius, SF6 proportion and insulating air pressure increasing; the particle vitality increases with the random angle of reflection and the applied voltage increasing, but there is a maximum in the relation between the vitality and the particle radius.关键词
直流气体绝缘金属封闭输电线路(GIL)/金属微粒/非弹性随机碰撞/SF6/N2混合气体/谐振频率/微粒活跃度Key words
DC gas insulated metal enclosed transmission line(GIL)/metal particle/inelastic random collisions/SF6/N2 mixtures/resonant frequency/particle vitality分类
信息技术与安全科学引用本文复制引用
王健,李庆民,李伯涛,陈超..考虑非弹性随机碰撞与SF6/N2混合气体影响的直流GIL球形金属微粒运动行为研究[J].中国电机工程学报,2015,(15):3971-3978,8.基金项目
国家重点基础研究发展计划项目(973计划)(2014CB239502)。The National Basic Research Program (973 Program)(2014CB239502) （973计划）
