Elimination of surface leader and increase in flashover strength by use of hollow insulators

Author

Yamano, Y.

Author_Institution

Dept. of Eng., Chiba Univ., Japan

Volume

28

Issue

3

fYear

1993

fDate

6/1/1993 12:00:00 AM

Firstpage

372

Lastpage

378

Abstract

The study of gaseous discharges leads one to the surface streamer channel. If the propagation of the generated streamer could be interrupted by some method, the surface leader would be eliminated. To achieve high reliability of HV insulation, a method is established for elimination of negative leaders, even when the streamers appear. A hollow insulator is designed to interrupt the streamer´s propagation. Surface insulation abilities are studied using the hollow insulator. The elimination of negative surface leaders and increase in flashover voltage under AC voltage in air are reported

Keywords

electric breakdown of solids; flashover; high-voltage techniques; insulators; organic insulating materials; polymers; surface discharges; AC voltage; HV insulation; PMMA pipe; acrylic pipe; flashover strength; flashover voltage; gaseous discharges; hollow insulator; negative surface leaders; partial surface discharges; reliability; streamer propagation; surface streamer channel; Cable insulation; Conductors; Creep; Dielectrics and electrical insulation; Electrodes; Flashover; Gas insulation; Partial discharges; Surface discharges; Voltage;

fLanguage

English

Journal_Title

Electrical Insulation, IEEE Transactions on

Publisher

ieee

ISSN

0018-9367

Type

jour

DOI

10.1109/14.236210

Filename

236210