An investigation into electromagnetic radiation due to partial discharges in high voltage equipment based on non-contact measurements

S. Xiao, P.J. Moore, M.D. Judd, I. Portugues

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

15 Citations (Scopus)

Abstract

The non-contact PD measurement is based on wideband radiometry to detect the radiated electromagnetic waves. This paper studies the propagation characteristics of the radiation by considering a current transformer (CT) as an example in both modeling simulation and experimental tests. A three-dimensional model is established for finite element analysis of the radiated emissions from a current transformer, incorporating two kinds of insulation materials, air and transformer oil. Studies are made of the effects of the insulation material properties and the structure of the CT tank, for which frequency response and resonance are also analyzed by the finite element method. Simulation results obtained are evaluated and used together to inform the design of practical experiments. This paper describes these experiments and draws its conclusions based on their comparison, and indicates the effect of resonant frequencies on the receiving frequency spectra.
Original languageEnglish
Title of host publicationElectrical Insulation, 2008. Proceedings of the 2008 IEEE International Symposium on Electrical Insulation
PublisherIEEE
Pages567-570
Number of pages4
DOIs
Publication statusPublished - 2008

Keywords

  • current transformers
  • electromagnetic waves
  • finite element analysis
  • frequency response
  • partial discharge measurement
  • radiometry
  • transformer oil
  • current transformer
  • electromagnetic wave radiation
  • finite element method
  • frequency spectra
  • high voltage equipment
  • insulation materials
  • noncontact measurements
  • partial discharges
  • wideband radiometry

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