Improving the maximum loading by optimal conductor selection of radial distribution systems

In this article, a method is proposed for improving the maximum allowable loading of radial distribution feeders for different types of load models without violating the maximum current carrying capacity of branch conductors by optimum conductor selection. The conductor, which is determined by the proposed method, will maximize the total savings in cost of conducting material and energy losses by maintaining acceptable voltage levels in radial distribution systems. Minimum voltage of the feeder can also be maintained by allowing the feeders to take load growth up to a specific period of time. The effectiveness of the proposed method is illustrated with a practical 26 node radial distribution system.