The effectiveness of FDTD modelling for refinement of UHF PD sensor response characteristics

Alistair Reid, Matt Stewart, Martin D. Judd

    Research output: Contribution to conferencePaper

    Abstract

    This paper explores the effectiveness of the Finite Difference Time Domain (FDTD) numerical modelling technique as a tool to aid in the design and optimisation of ultra high frequency (UHF) partial discharge couplers. The responses of two common UHF sensors – a monopole and a planar logarithmic spiral – to a step electric field have been obtained both empirically, using a gigahertz transverse electromagnetic test cell, and through software modelling by means of the FDTD technique. Results indicate that FDTD modelling can achieve sufficiently accurate prediction of UHF partial discharge sensor response provided specific environmental electromagnetic conditions are met and the model geometry is an acceptable trade-off between accuracy and simulation time.
    Original languageEnglish
    Pages77-80
    Number of pages4
    Publication statusPublished - 21 Jan 2009

    Keywords

    • partial discharge
    • FDTD modelling
    • UHF couplers
    • condition monitoring

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