Analysis of the influence of a conductive particle on the surface flashover characteristics of epoxy dielectric in atmospheric air

Dong Young Lim, Seung Wook Jee, Sungwoo Bae, Young Kil Choi

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

The insulation design of high-voltage equipment is based on physical information about surface discharge mechanism. However, few studies have provided the information. This paper presents a peculiar-surface discharge characteristic in the presence of particle around an epoxy surface. Surface discharge experiments were conducted to measure partial discharge (VP) and surface flashover voltage (VF) with particle locations from the epoxy surface in atmospheric air. There was no the significant change in VP on the particle location. In contrast, VF revealed the distinctive-insulation characteristic that showed its peak. This characteristic was described from the space charge and the proposed surface discharge mechanism.

Original languageEnglish
Pages (from-to)31-40
Number of pages10
JournalJournal of Electrostatics
Volume99
DOIs
StatePublished - 2019 May 1

Keywords

  • Breakdown
  • Conductive particle
  • Electron avalanche
  • Flashover
  • Secondary electron emission
  • Surface discharge

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