The effect of polarity on dc arc development over an ice surface

Shahab Farokhi, Masoud Farzaneh, Issouf Fofana

    Research output: Contribution to journalArticle

    Abstract

    Electrical/optical measurements have been carried out to study the dynamic behaviour of discharge on an ice surface. Significant differences in behaviour between positive and negative arcs have been revealed during discharge propagation. Also, its root structure, shape and velocity were found to be strongly polarity dependent. High-speed photography of the decays observed during discharge propagation showed two different patterns for dc positive and negative. Using simultaneous analysis of the captured pictures along with the current measurements at anode and cathode a mechanism describing the observed patterns is proposed.
    Original languageEnglish
    Article number185202
    Pages (from-to)1-12
    Number of pages12
    JournalJournal of Physics D: Applied Physics
    Volume43
    Issue number18
    DOIs
    Publication statusPublished - May 2010

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    Keywords

    • ice surface
    • polarity
    • dc arcs

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