Experimental studies on effects of surface morphologies on corona characteristics of conductors subjected to positive DC voltages  

作　　者：Zhu Jie He Zichen Wu Jiale Bian Xingming 

机构地区：[1]State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources,North China Electric Power University,Beijing 102206,People's Republic of China

出　　处：《High Voltage》2020年第4期489-497,共9页高电压（英文）

基　　金：This work was financially supported by the National Natural Science Foundation of China(51377096,51877082);the Fok Ying-Tong Education Foundation,China grant no.151058,the Fundamental Research Funds for the Central Universities 2019MS011;the Young Elite Scientists Sponsorship Program by CAST.

摘　　要：As the surface conditions play a significant role on corona discharge and its related effects of the conductors,the influence of fine particulate matter on positive-polarity,direct-current conductors was studied experimentally in this study.The surface morphologies of the conductor could be discovered from the experiments.The typical morphologies are the parallel chains of particles.To evaluate the surface condition quantitively,the surface roughness of the conductors is measured.It is found that the applied voltage and testing time have a great influence on the surface condition.After that,the corona characteristics of conductors are tested.It reveals that the total ground level electric field and ion flow density increases with the surface roughness growing.

关 键 词：SURFACE PARTICLES ROUGHNESS 

分 类 号：TM86[电气工程—高电压与绝缘技术]