Influence of metallic defects on the partial discharges at the interface between epoxy resin and silicone rubber

Makoto Onogi, Yoshimichi Ohki, Toshihiro Takahashi, Tsuguhiro Takahashi, Tatsuki Okamoto

Research output: Contribution to conferencePaper

Abstract

We have proposed a concept of an all solid insulated substation system as a next generation substation from a viewpoint of environmental protection. In order to make the system compact and its layout flexible, a compact connection system with a soft insulating material and a hard one has to be developed. There is a high possibility that the dielectric strength of such a connection system is decreased when a metallic defect such as a wire exists at its interface. Thus, we prepared samples that imitate the interface of the connection system and measured partial discharge inception voltages (PDIV) in both cases that a metal wire was present or not at the interface. When we put the metal wire along the direction of electric field, the PDIV decreases significantly with an increase in the length of the wire, while it decreases a little when the wire is along the equipotential line. The presence of air at the interface also reduces the PDIV.

Original languageEnglish
Pages560-563
Number of pages4
Publication statusPublished - 2005 Oct 7
Event2005 International Symposium on Electrical Insulating Materials, ISEIM 2005 - Kitakyushu, Japan
Duration: 2005 Jun 52005 Jun 9

Conference

Conference2005 International Symposium on Electrical Insulating Materials, ISEIM 2005
CountryJapan
CityKitakyushu
Period05/6/505/6/9

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ASJC Scopus subject areas

  • Engineering(all)
  • Materials Science(all)

Cite this

Onogi, M., Ohki, Y., Takahashi, T., Takahashi, T., & Okamoto, T. (2005). Influence of metallic defects on the partial discharges at the interface between epoxy resin and silicone rubber. 560-563. Paper presented at 2005 International Symposium on Electrical Insulating Materials, ISEIM 2005, Kitakyushu, Japan.