基于SA算法的主动配电网网损优化模型研究

Active power distribution network loss optimization model based on SA algorithm

分布式电源的接入会对主动配电网系统网损以及其运行经济性造成一定的影响。文章在传统最优潮流(Optimal Power Flow,OPF)模型的基础上,提出了基于敏感性分析(Sensitivity Analysis,SA)算法的主动配电网系统网损优化模型及其求解流程,并在华北地区某34节点配电网系统中对上述模型进行了仿真验证。算例结果表明,在一定的优化误差内,SA算法较传统OPF优化过程具有更高的计算效率,风电出力的不确定性会对系统网损及其最佳接入位置的选择产生较大的影响。

The grid-connection renewable distributed power will affect the active loss and operation cost of the active distribution system. Therefore, on the basis of the traditional optimal power flow(OPF)model, this paper proposes an active distribution network loss optimization model and its solution process based on sensitivity analysis(SA) algorithm. Then the above model is simulated and validated in a 34-node distribution network system in north China. The result shows the effectiveness of the proposed algorithm. And within a certain optimization error, SA algorithm is more efficient than the traditional OPF optimization process. The results also show that the uncertainty of the output of renewable distributed power will have a great impact on the selection of the system network loss and its optimal access location.