Title :
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
fDate :
6/23/1905 12:00:00 AM
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;
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
DOI :
10.1109/ICSD.2001.955623
