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.
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.
