基于改进禁忌搜索算法的配电网无功补偿优化规划

摘要

针对现阶段中国配电网无功补偿问题，提出了一种改进邻域搜索范围的禁忌搜索算法来确定并联电容器的安装位置和补偿容量，以此提高电压质量和降低系统有功损耗。采用电压合格目标函数搜索满足电压约束条件的初始解，使之在电压可行范围内寻优，然后以减少的有功网损最大为目标函数，从而得到全局最优解，并以未来24 h负荷预测曲线为背景确定了电容器的投切时刻。算例表明，提出的改进算法是可行和有效的。%Aiming at the problem of distribution network reactive power compensation in China, a Taboo search-ing algorithm which can improve the neighborhood searching is proposed to determine the optimal location and the size of shunt capacitors on distributed system, improve the voltage profile and reduce the active power loss.In this paper, voltage qualified objective function is used to search an initial solution that meets the voltage con-straints so that it is feasible in practicable voltage range, then the global optimum solution can be got when taking the reduced maximum of active power loss as objective function.And capacitor switching can be confirmed by set-ting the background of load prediction curve in coming 24 hours.The flow charts and the examples given in this paper show that the improved algorithm is feasible and effective.