基于网损最小的油田配电网重构方法研究-电力系统及其自动化专业论文.docxVIP

摘要网络重构是配电系统运行和控制的蕈要手段，也是配电管理系统的重要组成部分。 摘要 网络重构是配电系统运行和控制的蕈要手段，也是配电管理系统的重要组成部分。 网络重构在理论}：是一个复杂的多目标非线性组合优化问题。自上世纪80年代以来， 人们刈配IU网络重构进行了广泛的研究，形成了比较成熟的网络重构的方法耵『理论。 配电例湖流计算是研究网络重构的基石ff{，本文详细讨论了近年来m现的配}U网络潮 流训弹的各种存效算法，并对“些算法进行了改进，如6n推回代法对弱上不网牙¨PV节点 的统处理。 本文以遗传算法为基础，以配电网网络损耗最低为目标函数，引入模拟退火算了作 为辅l!_Jj手段进行网络重构的研究。在对遗传算法和模拟退火算法进行研究的基础上，对 遗传操作进行了部分改进，采用基于基本回路的编码方式，引入新的交叉方案，提出了 ‘种新的变芹操作力’式，同时加入了倒位算子。对于新解的接受机制，引入模拟退火算 法的№ ，p c，]i s准则。通过算例证明了将遗传算法和模拟退火算法结合可以有效地解 决配f包网络苇构问题。 关键词：例络损耗： 遗传算法； 网络重构； 模拟退火算法； 网络优化 ABSTRACTNetwork ABSTRACT Network reconfiguration is not only all important method in circulate and control of distribution system，but also an important part of distribution management system．In theory, network reconfiguration is a complex and multi—object combination optimization problem From 1 980s，people have extensively studied on network reconfiguration of distribution system Many relatively mature methods and theories of network reconfiguration have formed and developed． Distribution power flow calculation is the base of distribution network analysis Some effective algolithms that have appeared recently in distribution power flow calculation are discussed in this paper，and the parts of them are modifed．For example，weakly meshed distribution network and PV nodes are dealed with in the same way in back／forward sweep method On the base of genetic algorithm，mimum of feeder looses，and the operation of #mulated annealing．network reconfiguration is studied．Encoding mode based on basic loop is adopted，new crossover mode is introduced，new mutation mode and inversion operator are put forward．For acceptance mechanism of new answer,Metropolis rule of simulated annealing is introduced．It is proved that the mixed genetic annealing algorithm can solve the problem ol’dist J’ibution reconfiguration effectively． Keywords：Feeder losses：Genetic algorithm；Distribution network reconfiguration Simuated annealing；Network optimization 独创性声明本人声明所呈交的学位论文是本人在导师指导下进行的研究工作和取得的研究成 独创性声明 本人声明所呈交的学位