Title :
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
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;
Conference_Titel :
Electrical Insulation, 2006. Conference Record of the 2006 IEEE International Symposium on
Conference_Location :
Toronto, Ont.
Print_ISBN :
1-4244-0333-2
DOI :
10.1109/ELINSL.2006.1665275
