Impact of Pollution on Leakage Current in Polymeric Insulators: Time and Frequency Domain Analysis

Abstract

Insulators are used to provide mechanical support as well as prevent the flow of electricity that is not required for the transmission of high voltage electricity. Silicon rubber insulators are the commonly used insulating materials and are thus used in the highly polluted environment. Composite insulators are known to outperform the ceramic insulators. The Mechanical and reliability of polymeric insulators are critical for the high-performance voltage transmission lines and since most high voltage electricity transformation is done using the overhead lines safety and performance of the composite insulators used must be considered. This paper aims to analysis of the leakage current in time and frequency domain, particularly completed for polluted polymeric insulator surfaces. The results indicate that significantly enhance the performance of polymeric insulator, the analysis of LC behaviors under different conditions can be monitored. In order to get an accurate picture of the insulator performance and surface activity, field measurement is required.