含分布式电源的配电网多时段重构研究

摘要

Distribution network reconfiguration is a method that changes network configuration for obtaining the optimal operation efficiency,which neglects the influences of load varying,switch operation constraints and distributed generation connected.In allusion to the situations of distributed generation output randomicity and load varying,this paper presents a dynamic reconfiguration model of comprehensive cost minimum distribution network.Firstly,on the basis of static network reconfiguration,the injection active power of distributed generations was optimized.Then,reconfiguration time intervals was devided by setting a comprehensive performance indicator.The globally researching capability of quantum particle swarm algorithm was adopted to search for optimal reconfiguration scenario,in which,the distributed generations output,switch operation constraints and load varying in reconfiguration process were considered.Simulation results show that proposed method can reduce the power loss and operation cost effectively.%配电网重构是通过改变网络拓朴结构来获得运行效益最优的方式,但传统的静态重构方法忽略了负荷变化,开关操作约束以及分布式电源接入后对配电网运行的影响.针对分布式电源随机出力以及负荷波动的情况,提出了一种基于综合费用最低的配电网络多时段重构模型.首先在静态重构的基础上对分布式电源功率进行优化,采用综合评估指标划分多个重构时段,再利用量子粒子群算法的全局寻优能力求解该时段内的最优重构方案,在重构过程中重点考虑了分布式电源出力、负荷动态变化以及开关约束等特性.仿真算例验证了所提出的方法能有效减少系统网损及运行费用.