Composite Insulators Profile Optimization Using Particle Swarm Algorithm and Finite Element Method

Insulators are very important element in electric power systems. Composite insulators such as silicone rubber provide an excellent alternative to porcelain and glass in the field of high voltage applications. It has been widely used by power utilities since 1980's owing to their superior contaminant performances. Electric field stress along the insulators profile is one of the most important factors governing the electrical performance of composite insulator. The main objective of this paper is to improve the electric field distribution of composite insulators by reducing the value of maximum electric field strength, in order to enhance its long term performance. This will be done by modifying the dimensions of already exist practical insulators through an efficient optimization technique.…