The mechanism of arcing is discussed, including two theoretical hypotheses and a modified mechanism by Cho and Hastings in terms of the causes, processes and research state-of-the-art.

• 文章先介绍了电弧放电的理论观点,包括Park和Hastings的假说以及Cho和Hastings的理论扩展,对放电起因、过程及研究现状进行了分析。