Effect Analysis of Pollutant Distribution on the Flashover Performance of Porcelain and Composite insulator using Finite Element Method
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Abstract
The paper presents the investigation of flashover performance on porcelain and composite insulators by using the finite element-based method. The main focus of this study was to investigate the performance of insulators when operated under pollution since pollution is the leading factor of flashover phenomenon. In terms of the pollution configuration, different methodologies were proposed according to the nature of the insulating material. For porcelain insulators, the assumption based on previous research is that pollution accumulates as a conductive layer covering the surface of the insulator. In contrast, the composite insulator will have particulate matter to indicate the formation of a pollution layer on the insulator surface as the hydrophobic property would provide additional resistance to contamination. The simulation was conducted in finite element-based method software by applying different types of pollution configurations to porcelain and composite insulator surfaces. Evaluation of the simulation results will be based on the evaluation of electric field strength across the insulators surfaces. By comparing the electric field profiles across the insulator’s surfaces, the flashover performances of the insulators can be determined. Based on the evaluation results, the composite insulator shows better performance under pollution conditions, providing a more stable operation and stands as a more economical replacement for porcelain insulators to ensure the sustainability and reliability of the power system.
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