Multi Objective Topological Planning of Distribution Network Considering Load and Network Loss Uniformity

In addition to economy, the reliability of distribution network topology should be considered in distribution network topology planning. In allusion to such factors existed in the research on distribution network topological structure as single characteristic index and the difficulty to scientifically evaluate the uniformity of distribution network topology, which affect the reliability of the planning, so a distribution network topology uniform planning method, which was based on uniform distribution coefficient and overall considered both the load rate of distribution lines and the network loss rate, was proposed. It was put forward that the load rate topological entropy and network loss rate topological entropy were used to weigh the distribution network topology structure, and the weighted sum of the two entropies was defined as the index of uniform distribution coefficient to represent the uniformity of the topological structure of distribution network. On this basis, a multi-objective planning model for distribution network, in which the minimized economic cost and the maximized uniform distribution coefficient were taken as objectives, was established to improve both economy and reliability of distribution network planning. The rationality and superiority of the proposed scheme are verified by simulation results.