Three dimensional imaging of electrical trees in multiple stages

Siyuan Chen, Zepeng Lv, Simon Rowland, Philip Withers, James Carr

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

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    Electrical trees are degraded paths in polymeric insulation and are the mechanism of electrical failure of high voltage insulation systems. Previous studies have confirmed the application of X-ray Computed Tomography (XCT) imaging of electrical trees using phase contrast enhancement. This work evaluates the feasibility of X-ray imaging of electrical trees to measure growth at several stages of growth in the same treeing sample. The impact of x-ray dose on the epoxy resin studied is determined experimentally. An example of multi-stage tree imaging using laboratory micro-XCT and reconstructed renderings is provided. Based on the three-dimensional tree models, characteristics such as the degraded volume and surface area can be quantified. Furthermore, a comparison between two stages is presented to show the growth of the electrical tree in a fixed period of time. Insight into the treeing characteristics is also discussed.
    Original languageEnglish
    Title of host publicationIEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)
    Publication statusE-pub ahead of print - 15 Jan 2018


    • Electrical trees
    • 3D
    • X-ray
    • tensile tests
    • FTIR
    • multiple stages


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