Behavior of AC High Voltage Polyamide Insulators: Evolution of Leakage Current in Different Surface Conditions

Advances in Electrical and Electronic Engineering

Mohammed El Amine Slama¹  Abderrahmane Beroual² 

[1] 1 Ecole Centrale de Lyon, University of Lyon, AMPERE CNRS UMR 500536 Avenue Guy de Collongue, 69134 Ecully, France 2 University of Sciences and Technology of Oran, Laboratory LGEO, USTO BP 1505, Oran, Algeria;;

关键词: dielectric;    electrical arc;    flashover;    humidity;    insulator;    leakage current;    partial discharges;    pollution;    polyamide.;   

DOI  :  10.15598/aeee.v13i2.1145

来源: DOAJ

【 摘 要 】

This paper is aimed at a systematic study of the leakage current of high voltage polyamide insulator string under different conditions of pollution for possible application in the electric locomotive systems. It is shown that in the case of clean/dry and clean/wetted insulators, the leakage current and applied voltage are linear. While in the case of pollution with saline spray, the leakage current and the applied voltage are not linear; the leakage current changes from a linear regime to a nonlinear regime up to total flashover of the insulators sting. Traces of erosion and tracking of insulators resulting of partial discharges are observed.

【 授权许可】

Unknown