Aging of porcelain suspension insulators under mechanical and electrical stress on EHV AC lines

Author

Jagtiani, A.S. ; Booker, J.R.

Author_Institution

AEP Service Corp., Columbus, OH, USA

fYear

1995

fDate

29 Oct-3 Nov 1995

Firstpage

80

Lastpage

86

Abstract

A small number of failures of standard porcelain suspension insulators used on American Electric Power Company´s (USA) 765 kV lines were found with the porcelain shed broken away from the cap and pin assembly, allowing a “donut” of porcelain to fall to the hardware below. The investigation of these failures was approached from many angles to determine the sequence of events leading to the failure. Additionally, it was desired to determine if this phenomena was the result of aging porcelain under electrical and/or mechanical stress

Keywords

ageing; electric breakdown; insulator testing; poles and towers; porcelain insulators; power overhead lines; power transmission lines; 765 kV; EHV AC transmission lines; USA; aging; electrical stress; failures; mechanical stress; porcelain shed; porcelain suspension insulators; testing; Aging; Aluminum; Assembly; Conductors; Dielectrics and electrical insulation; Hardware; Insulator testing; Poles and towers; Porcelain; Stress;

fLanguage

English

Publisher

ieee

Conference_Titel

Transmission and Distribution Construction and Live Line Maintenance, 1995. ESMO-95 Proceedings., Seventh International Conference on

Conference_Location

Columbus, OH

Print_ISBN

0-7803-2506-0

Type

conf

DOI

10.1109/TDCLLM.1995.485040

Filename

485040