The functional relation between partial discharges and induced charge

Aage Pedersen, George C Crichton, Iain Wilson McAllister

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    Abstract

    Analytical expressions are deduced for the quantitative evaluation of the charge induced on an electrode by a partial discharge (PD) within a dielectric body. Two approaches have been employed to effect this evaluation. These are characterized by the λ function and the φ function, and the essential relationships to be fulfilled by λ and φ are derived. The principal difference between these functions is how the dielectric polarization is accounted for, either implicitly (λ) or explicitly (φ). This difference is brought clearly into focus. Thereafter the application of these functions to PD studies is considered. It is demonstrated quantitatively, that perturbations in the dielectric polarization, brought about by the PD, can contribute significantly to the magnitude of the induced charge. As a consequence, the currently accepted approach to PD energy considerations should be re-examined
    Original languageEnglish
    JournalIEEE Transactions on Dielectrics and Electrical Insulation
    Volume2
    Issue number4
    Pages (from-to)535-543
    ISSN1070-9878
    DOIs
    Publication statusPublished - 1995

    Bibliographical note

    Copyright: 1995 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE

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