The optimal planning of Distributed Generation (DG) is researched. Under the condition that the single capacity, number and position of Distributed Generation are uncertain, an optimal objective function of active power loss for distribution network with DG is established, and the voltage level constraint is introduced which is merged into objective function in the form of punishment factor. The Particle Swarm Optimization (PSO) algorithm and the calculation program of power flow are programmed based on Matlab software. An improved PSO algorithm is used to optimize the planning of DG and the optimal scheme is attained at last. Through the case analysis, the method is proved to be correct and effective.%研究了分布式电源的优化规划问题.在分布式电源单个容量、个数和位置未知的情况下,建立了包含分布式电源的配电网有功网损目标函数,模型中引入了电压水平约束,并将其转化为惩罚因子的形式并入目标函数.运用Matlab软件编写了粒子群算法和配电网潮流计算程序,采用改进的自适应权重粒子群算法进行目标函数寻优,最后得到了有功网损最小的分布式电源接入方案.通过算例分析,验证了该模型及方法的正确性和有效性.
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