境界要素法と直接探索法による電力ケーブル接続部の最適設計

概要

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This paper proposes an effective method of electric field optimization at power cable joint. The purpose of this paper is to find the optimal shape of inner curved electrode that shows the lowest electric field. The constraint condition in this problem is to keep the maximum electric field along the interface between the insulation rubber and the polyethylene being less than a permissible value. Boundary element method is used for numerical analysis of electric field and direct search method is applied as optimization process. Spline function is introduced in order to draw the inner curved electrode smoothly. Furthermore, the authors introduce dynamical modification of search width of design variables for optimal process. The optimal curved electrode shape can be derived from the initial rectangular one and the maximum electric field on the inner curved electrode can be greatly reduced. By considering the dynamical modification of search width, the maximum electric field is made less than the one ob tained in the case of fixed search width. Therefore, it is made clear that the effective optimal design can be achieved by using the proposed method without any experienced knowledge for designing the electrode shape.
日本シミュレーション学会の論文
2002-09-15