Analysis of the influence of a conductive particle on the surface flashover characteristics of epoxy dielectric in atmospheric air
- Authors
- Lim, Dong-Young; Jee, Seung-Wook; Bae, Sungwoo; Choi, Young-Kil
- Issue Date
- May-2019
- Publisher
- ELSEVIER SCIENCE BV
- Keywords
- Breakdown; Conductive particle; Electron avalanche; Flashover; Secondary electron emission; Surface discharge
- Citation
- JOURNAL OF ELECTROSTATICS, v.99, pp.31 - 40
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF ELECTROSTATICS
- Volume
- 99
- Start Page
- 31
- End Page
- 40
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/147887
- DOI
- 10.1016/j.elstat.2019.04.005
- ISSN
- 0304-3886
- 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 (V-P) and surface flashover voltage (V-F) with particle locations from the epoxy surface in atmospheric air. There was no the significant change in V-P on the particle location. In contrast, V-F revealed the distinctive-insulation characteristic that showed its peak. This characteristic was described from the space charge and the proposed surface discharge mechanism.
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