Feeder reconfiguration for loss reduction

Distribution networks are generally built as meshed networks, while they are operated radially. Their configurations may be varied with manual or automatic switching operations so that all of the loads are supplied and reduce power loss, increase system security, and enhance power quality. Reconfiguration also relieves the overloading of the network components. The change in network configuration is performed by opening sectionalizing (normally closed) and closing tie (normally open) switches of the network. These switching are performed in such a way that the radiality of the network is maintained and all of the loads are energized. Obviously, the greater the number of switches is, the greater the possibilities are for reconfiguration and the better the effects are. In recent years, considerable attention has been conducted for loss minimization in the area of network reconfiguration of distribution systems using heuristics as well as artificial intelligence techniques. In this chapter, the author has considered multiple objectives and reduction of real power loss is one of the objectives. Hence, the work formulates the network reconfiguration problem as a multiple objective problem subject to operational and electric constraints.