Optimal conductor selection in planning radial distribution systems

A fast algorithm to help in the selection of proper conductors for feeder expansion plans is presented. The optimal conductor type is determined for each feeder segment in order to maintain an acceptable voltage profile along the entire feeder, minimizing capital investments and the cost of feeder losses. Lateral branches as well as regulators along the feeder are considered. Computer implementation of the algorithm is described. Its use in conjunction with an optimization model for configuring feeder networks to derive an overall distribution expansion plan is discussed