Investigation into Pulse Sequence Analysis of PD features due to electrical tree growth in epoxy resin

Bojie Sheng, Victoria M. Catterson, Simon Rowland, Ibrahim Iddrissu

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

    192 Downloads (Pure)

    Abstract

    Electrical trees developed using point-plane samples have been investigated under three different voltage conditions: AC, AC with positive DC bias, and AC with negative DC bias. Visual observations mainly indicate two types of electrical tree progression from initiation to breakdown: “forward and backward” (FB) trees and “forward” (F) trees. FB trees can be observed in AC tests, while F trees occur in AC with DC bias tests. The difference between AC with negative DC bias and AC with positive DC bias is the growth of a rapid long branch prior to breakdown under negative DC bias conditions. Based on the pulse sequence analysis (PSA) technique applied to the PD data associated with electrical tree growth, the findings confirm that PSA curves under different voltage tests have different regions and PSA features can be indicators of tree growth.
    Original languageEnglish
    Title of host publicationProceedings of the International Conference on Dielectrics 2016
    DOIs
    Publication statusPublished - 2016

    Keywords

    • partial discharge (PD)
    • electrical tree
    • AC
    • AC with DC bias
    • pulse sequence analysis
    • epoxy resin

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