Dyhia Doufene, Slimane Bouazabia, and Sid A. Bessedik
Insulators design, particle swarm optimization, finite elementmethod, 3D electric field
The purpose of this study is to estimate 3D electric field distribution on a polluted suspension insulator surface using finite element method (FEM) combined with a metaheuristic method namely a particle swarm optimization (PSO) algorithm. The PSO is applied to reshape an insulator form that presents a better electrical performance and thus reduce the electric field at the pin region. In the presence of pollution, this region is proved to be the most critical area for discharge initiation and propagation. The study of the electric field repartition on optimized high-voltage (HV) insulators under polluted conditions plays an important role in enhancing the performance and reliability of HV insulators. For this purpose, the electric field is calculated in both dry clean and contaminated surface conditions using FEM. Afterwards, the PSO algorithm is proposed as an efficient approach for optimizing the insulator geometry. Each stage of the work will be studied in both clean and polluted situations. From the achieved results, we see that the hybrid algorithm (PSO-FEM) gives great aptitudes for enhancing the distribution of the electric field on the HV insulators. The proposed PSO-FEM algorithm could be very helpful tool for designing HV insulator profiles that provide enhanced performances.
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