Surface leakage current signal response on the field-aged high voltage polymeric insulator

Norazli, Mohd Syahiran (2020) Surface leakage current signal response on the field-aged high voltage polymeric insulator. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

This project presents determination of field-aged polymer insulators on the high voltage surface leakage current. Insulators are devices that are used to support, separate or contain high voltage conductors in electricity supply networks. Aging processes are typically complicated and occur under various type of stresses at same time. Insulation measured at the contact angle under consideration leads to the surface being approximately horizontal to the top surface. Insulators of a polymer form have slowly replaced ceramic insulators. Polymer insulator is exposed to the natural environment after field-aged high voltage polymer insulator such as sunlight, solar radiation and acidic agents so the propagation of degradation on the insulator surface continues to begin. Researchers around the world have looked into different types of evaluation and analysis methods. This evaluation and analysis involve physical evaluate, analyze and compare the conditions of polymer insulator degradation using a simple measured information and spectrogram. Therefore, the research goal is to conduct a comparative study of the condition of polymeric insulator degradation between 6-year and 18-year field-aged insulator. The comparison involves the physical evaluation performance of polymer insulator which is surface roughness and to statically gather the root mean squared LC data of 6-year and 18-year insulator. The project test and analysis consist of software hardware part the measurement of surface roughness using surface roughness analyser and the LC signal parameter test using the inclined plane test (IPT). Labview and Matlab software are used for the software part for the process and study of LC capture. Since hardware testing is not possible, the project focuses on data analysis carried out by Matlab software to analyse spectrograph signal data. As the overall result, the LC signal parameter which is surface leakage current able to significantly differentiate the surface condition of 6-year and 18-year insulators compared with the surface roughness data.

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