电工技术学报  2019, Vol. 34 Issue (20): 4217-4225    DOI: 10.19595/j.cnki.1000-6753.tces.180492
电机与电器 |
GIS中线形和球形金属微粒的运动行为和危害性
张连根, 路士杰, 李成榕, 王海青, 唐志国
新能源电力系统国家重点实验室(华北电力大学) 北京 102206
Motor Behavior and Hazard of Spherical and Linear Particle in Gas Insulated Switchgear
Zhang Liangen, Lu Shijie, Li Chengrong, Wang Haiqing, Tang Zhiguo
State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources North China Electric Power University Beijing 102206 China
全文: PDF (34335 KB)  
输出: BibTeX | EndNote (RIS)      
摘要 为了研究气体绝缘组合电器(GIS)中线形和球形两种典型微粒污染物运动行为和危害性,在实验室搭建了以实际126kV GIS设备为原型的21缩比实验腔体,记录了球形和线形微粒在腔体内起跳、碰撞、运动与停止的全过程,对微粒的运动行为特征进行了描述和总结,对两类微粒最终停止位置以及不同停止位置处的危害性进行了统计分析,并通过不同微粒初始位置、不同外施电压下的多次重复性实验论证了实验结果的一般性。研究结果表明:球形微粒起跳后,径向起跳高度2mm左右;线形微粒起跳时,一端首先抬起,然后微粒站立跳动,径向起跳高度5mm左右。球形微粒与绝缘子碰撞会弹回,经过充分运动最终全部停止在外侧弱电场区;线形微粒与绝缘子碰撞作用易形成吸附,吸附于绝缘子的线形微粒易引起局部放电和诱发沿面闪络,危害性高于球形微粒。分析了重力、库仑力、电场梯度力及镜像力对两类微粒运动行为的影响,并论证了接触面镜像力所引起的静摩擦力差异是线形微粒与球形微粒在绝缘子表面吸附情况不同的主要原因。
服务
把本文推荐给朋友
加入我的书架
加入引用管理器
E-mail Alert
RSS
作者相关文章
张连根
路士杰
李成榕
王海青
唐志国
关键词 气体绝缘组合电器(GIS)球形微粒线形微粒微粒运动行为微粒危害性    
Abstract:In order to study the motion behavior and hazard of spherical particle and linear particle, a 2:1 scaled model cavity according to 126kV gas insulated switchgear (GIS) was set up. The whole process of jumping, collision, movement and stopping of spherical and linear particles was record and described. The hazards of the final stopping position of the two kinds of particles were discussed through multiple repetitive experiments. The results indicate that after the spherical particles jump, the radial height is about 2mm. As the linear particles jump, one end first lifts, the particles stand and jump, and the radial jump height is about 5mm. The spherical particles bounce back when colliding with insulators and they all stop in the weak external electric field. Linear particles adsorbed will easily cause partial discharges and induce flashover voltage along the surface. The effects of Coulomb force, gravity, electric field gradient and image force were analyzed. It is also demonstrated that the image force is the main reason for the final formation of particle adsorption on the insulator.
Key wordsGas insulated switchgear    spherical particle    linear particle    particle motion    particle hazard   
收稿日期: 2018-03-31      出版日期: 2019-10-30
PACS: TM85  
基金资助:国家重点研发计划资助项目(2017YFB0903800)
通讯作者: 张连根 男,1987年生,博士,研究方向为电气设备在线监测与故障诊断。E-mail: zhanglg612@163.com   
作者简介: 路士杰 男,1995年生,硕士研究生,研究方向为气体绝缘输电设备绝缘及相关技术。E-mail: 13001980343@126.com
引用本文:   
张连根, 路士杰, 李成榕, 王海青, 唐志国. GIS中线形和球形金属微粒的运动行为和危害性[J]. 电工技术学报, 2019, 34(20): 4217-4225. Zhang Liangen, Lu Shijie, Li Chengrong, Wang Haiqing, Tang Zhiguo. Motor Behavior and Hazard of Spherical and Linear Particle in Gas Insulated Switchgear. Transactions of China Electrotechnical Society, 2019, 34(20): 4217-4225.
链接本文:  
https://dgjsxb.ces-transaction.com/CN/10.19595/j.cnki.1000-6753.tces.180492          https://dgjsxb.ces-transaction.com/CN/Y2019/V34/I20/4217