Controlling flashover between electrode segments in DC power capacitors

Author

Grafton, M.A. ; Fothergill, J.C. ; Dissado, L.A. ; Shirley-Elgood, J.R.R. ; Stevens, G.C. ; Thomas, J.L.

Author_Institution

Dept. of Eng., Leicester Univ., UK

fYear

2001

fDate

6/23/1905 12:00:00 AM

Firstpage

279

Lastpage

282

Abstract

The aim of this research is to gain an understanding of the mechanisms leading to electrical failure in DC power capacitors based on a polypropylene (PP) dielectric and a "self-healing" electrode structure, Connolly et al. In this structure the electrode is sectioned into small parts, which are interconnected by fusible bridges. If a localised flashover occurs, the bridges connecting that part of the electrode fuse and isolate it from the neighbouring regions. Such a method for \´graceful\´ ageing will be reduced in effectiveness if surface flashover occurs between the disconnected sections

Keywords

flashover; organic insulating materials; power capacitors; DC power capacitors; ageing; disconnected sections; electrical failure; flashover; fusible bridges; localised flashover; polypropylene; self-healing electrode structure; Aluminum; Atomic force microscopy; Breakdown voltage; Bridge circuits; Coatings; Electrodes; Flashover; Power capacitors; Power engineering; Power engineering and energy;

fLanguage

English

Publisher

ieee

Conference_Titel

Solid Dielectrics, 2001. ICSD '01. Proceedings of the 2001 IEEE 7th International Conference on

Conference_Location

Eindhoven

Print_ISBN

0-7803-6352-3

Type

conf

DOI

10.1109/ICSD.2001.955623

Filename

955623