Influence of humidity on flashover in air in the presence of dielectric surfaces

Author

Zheng, J.C. ; Wang, Zhen ; Liu, Y.W.

Author_Institution

Electr. Power Res. Inst., China

Volume

5

fYear

1993

fDate

19-21 Oct. 1993

Firstpage

443

Abstract

The humidity effect on flashover in air in the presence of a dielectric surface was studied on insulator specimens having typical electrode geometries in a humidity chamber. The influence of humidity-dependent change in electric field distribution on the inception and flashover voltage was investigated by field simulation and tests. The concept of indirect effect of atmospheric parameters is proposed and used to explain the anomalous behaviour of insulators in respect of humidity influence.<>

Keywords

atmospheric humidity; electric breakdown of gases; electric fields; electrodes; flashover; gaseous insulation; insulation testing; insulators; atmospheric parameters; breakdown; dielectric surfaces; electric field distribution; electrode geometries; field simulation; field tests; flashover inception; flashover voltage; humidity; indirect effect; insulators; Atmospheric modeling; Dielectrics and electrical insulation; Electrodes; Flashover; Geometry; Humidity; Insulator testing; Lightning; Temperature dependence; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

TENCON '93. Proceedings. Computer, Communication, Control and Power Engineering.1993 IEEE Region 10 Conference on

Conference_Location

Beijing, China

Print_ISBN

0-7803-1233-3

Type

conf

DOI

10.1109/TENCON.1993.320677

Filename

320677