New design of a medium voltage indoor post insulator

This paper describes the designing of a new external shape for a medium voltage indoor post insulator, which consists of an optimization polynomial. The new external shape provides lower values of electric field strength inside the insulator and in the air. Another innovation is the use of reliable components, i.e. the voltage divider. The new insulator uses a ceramic capacitor with the required capacitance, unlike previous insulators that had problems reaching the appropriate capacitance using cylindrical metal mesh. The insulator model was built with MATLAB software, followed by the calculations of electric fields in EleFAnT software. The differential evolution (DE) algorithm was used as a successful and global optimization algorithm for the optimal design of an insulator's external shape and the position of internal insulator elements.