微粒陷阱对直流稍不均匀场中球状自由导电微粒运动的影响规律  

Effect of Particle Traps on Movement of Spherical Free-conducting Particles in Slightly Inhomogeneous DC Field

作　　者：汪佛池[1,2] 曹东亮 杨磊 刘宏宇[1] 李志兵[2] 齐玉娟 WANG Fochi;CAO Dongliang;YANG Lei;LIU Hongyu;LI Zhibing;QI Yujuan(Hebei Provincial Key Laboratory of Power Transmission Equipment Security Defense,North China Electric Power University,Baoding 071003,China;China Electric Power Research Institute,Beijing 100085,China;State Grid Shenyang Electric Power Supply Company,Shenyang 110811,China;State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources,North China Electric Power University,Beijing 102206,China)

机构地区：[1]华北电力大学河北省输变电设备安全防御重点实验室,保定071003 [2]中国电力科学研究院有限公司,北京100085 [3]国网沈阳供电公司,沈阳110811 [4]华北电力大学新能源与电力系统国家重点实验室,北京102206

出　　处：《高电压技术》2018年第9期2897-2903,共7页High Voltage Engineering

基　　金：中央高校基本科研业务费专项资金(2016MS93;2018MS086)~~

摘　　要：针对气体绝缘系统（GIS）中自由导电微粒无害化研究问题,明确微粒陷阱对直流稍不均匀场中导电微粒运动的影响规律可指导后续微粒陷阱的设置。为此,建立了球状导电微粒在直流稍不均匀场中的运动方程,获得了导电微粒的运动轨迹,并将其分为水平滚动、起跳与反弹3个阶段;仿真分析了微粒陷阱宽度、深度对周围局部场强的影响,表明陷阱宽度是影响陷阱周围电场分布的主要因素;对比研究了在水平滚动和起跳两个阶段设置微粒陷阱对导电微粒的捕获效果,表明在起跳点处设置微粒陷阱可能导致导电微粒提前起跳,在水平滚动阶段设置微粒陷阱对导电微粒的捕获具有明显效果,并给出了水平滚动阶段微粒陷阱设置准则。最后,通过相关实验验证了上述结论的准确性。To solve the problem of deactivation of spherical free conducting particles in gas insulated system（GIS）, the determination of the influences of particle traps on the conducting particles motion in a slightly inhomogeneous DC field can guide the installation of particle traps.Therefore, we established a moving equation of conducting particles in DC slightly non-uniform field, and acquired the trajectory of conducting particles which could be divided into three stages, namely horizontal scroll, lifting-off and rebound. Moreover, we simulated the effects of the width and depth of particle traps on the local field. The results show the trap width is the main factor affecting the electric field distribution around the trap;meanwhile we studied the capture effect of particle traps on conducting particles in a comparative way in the horizontal sliding stage and lift-off stage, the results indicate that the particle traps at the jump point may lead to lifting off in advance for the conducting particles, setting up traps during the horizontal sliding stage has an obvious effect on the particle capturing, and gives the particle traps setting criteria during the horizontal sliding stage. Finally, the accuracy of the above conclusions is verified by experiments.

关 键 词：气体绝缘系统 微粒陷阱 直流稍不均匀场 球状自由导电微粒 无害化 

分 类 号：TM595[电气工程—电器]