Optimal Reconfiguration of Electrical Distribution Network

Distribution networks are the most extensive part of the electrical power system. The goal of reconfiguration of the distribution network is to find a radial operating structure that minimizes power losses of the distribution system under normal operation conditions. Generally, distribution networks are built as interconnected networks, while in operation they are arranged into a radial tree structure. The distribution network reconfiguration (DNRC) model with line power constraints is set up, in which the objective is to minimize the system power loss. The basic idea of the heuristic branch exchange method is to compute change of power losses through operating a pair of switches. When the load flow distribution in a loop is an optimal flow, the corresponding network power losses will be minimal. In order to get a precise expression for system power loss, the branch power will be computed through a radial distribution network load flow (RDNLF) method.

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