特殊工业粉尘地区复合绝缘子自然积污特性研究  

Natural fouling characteristics of composite insulatorsin special industrial dust areas

作　　者：邵仕超 毕晓甜 李明哲 陈杰 吴笑寒 陶风波 SHAO Shichao;BI Xiaotian;LI Mingzhe;CHEN Jie;WU Xiaohan;TAO Fengbo(Graduate International School at Shenzhen,Tsinghua University,Shenzhen 518000,China;State Grid Jiangsu Electric Power Co.,Ltd.Research Institute,Nanjing 211103,China)

机构地区：[1]清华大学深圳国际研究生院,广东深圳518000 [2]国网江苏省电力有限公司电力科学研究院,江苏南京211103

出　　处：《电力工程技术》2021年第1期138-141,154,共5页Electric Power Engineering Technology

基　　金：国家重点研发计划资助项目(2017YFB0902702)。

摘　　要：硅橡胶复合绝缘子具备机械强度高、防污闪性能优异、质量轻、运行维护方便等优点,在电网建设中应用广泛。在部分工业化工区,存在特殊工业粉尘污染,该类地区运行的复合绝缘子表面更容易积污,绝缘子表面在积污后憎水性显著降低,绝缘性能明显减弱。为研究特殊工业粉尘地区运行的复合绝缘子自然积污特性,文中对江苏某工业园区运行的复合绝缘子进行取样,使用污秽度与微观分析结合的方法对积污特性进行研究。结果表明,该地区运行的复合绝缘子普遍表面污秽度较重,污秽可溶物等值盐密(ESDD)数值较高,且污秽中存在的不溶灰分主要元素为碳(C)、氧(O)、硅(Si),含碳粉、二氧化硅(SiO 2)、氧化钙(CaO)等影响绝缘子表面导电性及吸水性的物质。文中所提方法能较好地揭示特殊工业粉尘地区的污秽特性。Silicone rubber composite insulator has the advantages of high mechanical strength,excellent antipollution flashover performance,light weight,convenient operation and maintenance.It has been widely used in power grid construction.As silicone rubber material has excellent hydrophobicity and hydrophobicity mobility,its surface can still maintain good antifouling flashover ability after contamination.In some industrial areas,there is special industrial dust pollution,and the special industrial dust pollution in such areas has obvious impact on the performance of composite insulators,which makes the composite insulator surface in operation more prone to fouling.After fouling the hydrophobicity of the insulator surface is significantly reduced and the insulation performance is weakened.In order to study the natural pollution characteristics of composite insulators in special industrial dust areas,the composite insulators operated in a special industrial park in Jiangsu are sampled to study the pollution characteristics.The results show that the surface contamination of composite insulators operating in this area is generally heavy,the density of pollution equivalent salt is high,and the soluble salt components of pollution are mainly CaSO 4 and Na 2 SO 4.The main components of insoluble ash are C,O,Si,containing carbon powder,SiO 2,CaO and other substances,which affect the surface conductivity and absorption of insulators.

关 键 词：复合绝缘子 工业粉尘 积污特性 成分分析 微观分析 

分 类 号：TM852[电气工程—高电压与绝缘技术]