Electrode Shape Design at the Power Cable Joint by Using (.MU.+.LAMBDA.)-ES Multi-Objective Evaluation

Abstract

This paper proposes effective and general-purpose insulation design method of the power cable joint. To improve the insulation performance of the cable joint, the electric field strength on the inner electrode surface should be made as low as possible. The evolution strategy (ES) method is employed for obtaining the optimum shape of the electrode. The multi-objective evaluation is performed as well as the single-objective evaluation. The one of the objective functions is the maximum electric field strength on the electrode and the other is the maximum electric field strength along the interface. The electrode shape that shows the smallest maximum electric field is obtained among the shapes that satisfy the constraint condition.