Influence of high-permittivity barriers on PD activity in three-layer dielectrics

S. M. Lebedev, O. S. Gefle, Y. P. Pokholkov, E. Gockenbach, H. Borsi, V. Wasserberg, N. Abedi, J. Szczechowski

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Abstract

It is a well-known fact that the breakdown voltage of dielectrics in a divergent field may be increased by using an additional insulating layer (a barrier) placed at the optimal position between the electrodes. This paper is devoted to the investigation of the barrier effect in solid dielectrics in a quasi-uniform electric field, i.e. the study of the relationship between partial discharge (PD) activity and the barrier position in the insulating gap. It is established that the PD parameters depend on the barrier position in the gap. In particular, the ignition voltage of critical PDs is increased by more than 50% at the optimal barrier position compared to that for other barrier positions.

Original languageEnglish
Pages (from-to)3155-3159
Number of pages5
JournalJournal of Physics D: Applied Physics
Volume37
Issue number22
DOIs
Publication statusPublished - 21 Nov 2004

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ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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