Performance of 400 kV line insulators under pollution

Author

Arora, Ravindra ; Rai, Manoj ; Yadav, Satyendra Kumar

Author_Institution

Dept. of Electr. Eng., Indian Inst. of Technol., Kanpur

fYear

2006

fDate

11-14 June 2006

Firstpage

136

Lastpage

139

Abstract

Investigation of the cause of repeated tripping of a 400 kV, AC transmission line has been reported in this paper. Failure of insulation strings in the months of December and January in a small length of the 400 km long line were caused due to peculiar fumes coming out from salt kilns. The laboratory investigations performed under simulated conditions of line pollution revealed a drastic fall in the flashover voltages. Excessively high creepage currents were measured under fog and polluted conditions. Performance of these insulators with RTV coating was also investigated

Keywords

electric current measurement; failure analysis; flashover; insulating coatings; insulator contamination; power transmission lines; 400 kV; AC transmission line; RTV coating; creepage current measurement; flashover; fumes; insulation string failure; insulator pollution; salt kiln; Capacitive sensors; Coatings; Dielectrics and electrical insulation; Flashover; Kilns; Laboratories; Poles and towers; Pollution; Power transmission lines; Voltage; High Voltage Insulator; Pollution performance; RTV;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulation, 2006. Conference Record of the 2006 IEEE International Symposium on

Conference_Location

Toronto, Ont.

ISSN

1089-084X

Print_ISBN

1-4244-0333-2

Type

conf

DOI

10.1109/ELINSL.2006.1665275

Filename

1665275