Partial discharge energy and electrical tree volume degraded in epoxy resin

R. Schurch, S. M. Rowland, R. S. Bradley

    Research output: Chapter in Book/Conference proceedingConference contributionpeer-review

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    Abstract

    Electrical trees are hollow artifacts resembling botanical trees generated in high electrical fields, and are a form of polymeric insulation degradation. Most models assume partial discharges, which accompany tree growth, are the cause of material degradation, and so understanding the energy associated with discharges and the energy of vaporization of the material chemical constituents is critical. In this study the volume of trees has been determined through an X-ray Computed Tomography technique, and the energy of discharges by directly measuring PD activity during tree growth. It is shown that approximately 9×105 µm3 of material is evaporated per electrical Joule of energy, representing 7% efficiency in the conversion process.
    Original languageEnglish
    Title of host publicationhost publication
    PublisherIEEE
    Pages820-823
    Number of pages4
    DOIs
    Publication statusPublished - 2015
    EventConference on Electrical Insulation and Dielectric Phenomena - Des Moines
    Duration: 1 Jan 1824 → …

    Conference

    ConferenceConference on Electrical Insulation and Dielectric Phenomena
    CityDes Moines
    Period1/01/24 → …

    Keywords

    • partial discharge; PD; electrical tree; degradation

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