Genetic algorithm for optimal sectionalizing in radial distribution systems with alternative supply

A procedure for optimal allocation of sectionalizing switches in radial distribution systems is proposed. This procedure is aimed at minimizing unsupplied energy caused by network failures. Opportunities for alternative source supply made possible by network reconfiguration are considered. Two applications of this procedure are explored: when the allocation of alternative supply tie-lines is given and when the optimal allocation of a specified number of tie-lines, as well as the allocation of sectionalizers, must be determined. The procedure is based upon the genetic algorithm, a search technique motivated by natural evolution. The basic operators of the genetic algorithm are adapted to solve the problems considered. Performance enhancing modifications of the algorithm are suggested when applicable. A medium-scale, practical example is presented to illustrate the validity and effectiveness of the proposed method.