Calculation of conductive ions distribution in icicle and melting water conductivity  

作　　者：Yanqing Liu Lichun Shu Qin Hu Xingliang Jiang Meilin Zhu Jianbo Yu 

机构地区：[1]State Key Laboratory of Power Transmission Equipment&System Security and New Technology,Chongqing University,Chongqing,China [2]State Grid Chongqing Electric Power Company,Chongqing,China

出　　处：《High Voltage》2021年第4期702-710,共9页高电压（英文）

基　　金：National Natural Science Foundation of China,Grant/Award Number:51637002;Science and Technology Project of State Grid Chongqing Electric Power Company of China,Grant/Award Number:SGCQJY00JJS190061。

摘　　要：The flashover problem of ice-covered insulators has seriously affected the safe operation of transmission lines.Numerous researches have shown that the high conductivity water film on the surface is determined by the conductive ions distribution in the icicle which is the key factor affecting the flashover voltage of ice-covered insulators.In our previous work,the conductive ions distribution in the icicle has been obtained through experi-ments and simulation analysis.In order to calculate the conductivity of the water film,the conductive ion-specific content at different positions in the icicle has been calculated mathematically.In addition,based on the simulation of icicle melting process,the icicle melting process is analysed,and the melting water conductivity of the icicle is calculated.Moreover,melting ice test is carried out in artificial climate chamber to verify the validity of the calculation method.The calculated results are in good agreement with the test results.The conclusion obtained here would provide theoretical basis for establishing a flashover model of ice-covered insulators.

关 键 词：CONDUCTIVITY CONDUCTIVE DISTRIBUTION 

分 类 号：TM216[一般工业技术—材料科学与工程]