典型悬式绝缘子风洞直流积污特性与分析  

Wind Tunnel DC Contamination Performance of Typical Suspension Insulator and Its Analysis

作　　者：张东东[1] 张志劲[1] 蒋兴良[1] 胡建林[1] 刘小欢 Zhang Dongdong;Zhang Zhijin;Jiang Xingliang;Hu Jianlin;Liu Xiaohuan(State Key Laboratory of Power Transmission Equipment&System Security and New Technology Chongqing University Chongqing 400044 China;State Grid Jingmen Power Supply Bureau Jingmen 448000 China)

机构地区：[1]输配电装备及系统安全与新技术国家重点实验室(重庆大学),重庆400044 [2]国网荆门供电公司,荆门448000

出　　处：《电工技术学报》2018年第19期4636-4645,共10页Transactions of China Electrotechnical Society

基　　金：国家电网公司科技项目资助(SGTYHT/14-JS-188)

摘　　要：直流输电线路绝缘子表面的污秽颗粒运动沉积过程受其周围电场的影响明显。目前对于绝缘子带电积污规律及电场影响机制方面的研究仍不全面。以典型悬式绝缘子XP-160为对象,开展其在不同风速及污秽颗粒粒径下的风洞直流积污试验,分析绝缘子的直流带电积污特性,得到绝缘子带直流电和不带电情况下的积污差异。并结合场致荷电理论,计算分析污秽颗粒在绝缘子周围直流电场中受到的作用力,研究直流电场中污秽颗粒的运动过程及运动速度变化规律,分析绝缘子周围直流电场对积污的影响。The pollution particle depositing and moving process on DC transmission line energized insulator will be obviously affected by its surrounding electric field.Currently,energized insulator contamination rules and the corresponding mechanism are not fully revealed yet.In this paper,taking XP-160 typical suspension insulator as the object,its DC contamination tests under various wind velocity and pollution particle diameter were carried out using wind tunnel platform.The DC contamination performances were analyzed.The discrepancy of pollution degree between DC energized insulator and non-energized insulator was obtained.Then combining with field charging theory,t the bearing forces of pollution particles were calculated and analyzed,and the variation of the particles’moving process as well as their moving speed by DC electric field were studied.Finally the effects of insulator DC electric field on its contamination were revealed.

关 键 词：绝缘子 积污 风洞试验 直流电场 

分 类 号：TM85[电气工程—高电压与绝缘技术]