Influence of streaming electrification on creeping discharge of oil-paper insulation systems. (Study on dendritic discharge of barrier boards in power transformers)

Author

Jia-xiang, Yang ; Xiao-Chun, Chi ; Li-Jian, Ding

Author_Institution

Dept. of Electr. Mater. Eng., Harbin Inst. of Electr. Technol., China

Volume

2

fYear

1994

fDate

3-8 Jul 1994

Firstpage

857

Abstract

In this paper, in order to investigate failures due to the dendritic discharge on the surface of barrier boards in power transformers, streaming electrification and its influence on creeping discharge of oil-paper insulation systems have been studied using experimental models. According to the experimental results, the reasons of the failures have been revealed. It has been found that the creeping discharge of oil-paper insulation systems are related to streaming electrification and, as the streaming electrification makes the creeping discharge voltage lower, the creeping discharge path is also influenced

Keywords

electric breakdown; electrostatics; insulating oils; insulation testing; paper; power transformer insulation; power transformer testing; surface discharges; barrier boards; creeping discharge; dendritic discharge; oil-paper insulation systems; power transformers; streaming electrification; testing; Circuits; Control systems; Electrodes; Electron tubes; Leakage current; Oil insulation; Petroleum; Portable media players; Power transformer insulation; Valves;

fLanguage

English

Publisher

ieee

Conference_Titel

Properties and Applications of Dielectric Materials, 1994., Proceedings of the 4th International Conference on

Conference_Location

Brisbane, Qld.

Print_ISBN

0-7803-1307-0

Type

conf

DOI

10.1109/ICPADM.1994.414146

Filename

414146