Abstract
Lightning strike is the main reason for the failure of overhead lines in distribution network, which seriously affects the reliability of power supply and power quality. The existing optimization research of lightning protection system(LPS) mainly focuses on a specific lightning protection method, and there are few kinds of research on comprehensive optimization methods among various lightning protection solutions. A model based on distribution network reliability index is proposed in this paper. In the model, mixed integer linear programming (MILP) is used to optimize the lightning protection measures of lightning rods, lightning wires and lightning arresters with different densities. The model considers the influence of arc over rate on the basis of related research and obtains a comprehensive optimization method of different protection measures acting on distribution lines. Taking an actual distribution network as an example, this paper applies the optimization model established to obtain the appropriate lightning protection measures for each line.
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