基于柔性分析的配电网重构方法
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摘要
配电网重构通过调整开关的开合状态来改变配电网络的拓扑结构,从而实现降低网络损耗和提高供电质量等目的。现有的配电网重构方法往往以经济性为目标,来求取满足安全可靠性约束的最优配置方式。由于约束条件的边界通常是用刚性表达式来刻画的,因此这些方法具有一定的局限性。提出了一种基于柔性分析的配电网重构优化建模方法,其特点在于通过引入柔性参数来协调处理配电网运行的多个目标之间的联系,使得所获得的最优解能够更为全面地兼顾经济性与安全可靠性的要求。为了求解所建立的用于配电网重构的混合整数非线性优化模型,采用了改进的混合蛙跳算法,其保留了混合复杂进化算法与粒子群算法的特性,具有较强的全局寻优能力。
The optimization of distribution network reconfiguration aims at changing the topological structure of distribution networks through altering the status of switches so as to decrease the power loss and enhance the power quality. The existing methods for optimization of distribution network configuration regard the economic functions as objectives,and obtain an optimal configuration which satisfies the constraints of security and reliability. Since the boundary of these constraints is rigid,these methods are limited to some extent. This paper proposes a new modeling method for optimization of distribution network reconfiguration based on flexible analysis,and it deals with the relationship among the multiple objectives coordinately by introducing the flexible parameters,so that the optimal solution obtained can satisfy the requirements of economy,security and reliability in a more comprehensive manner. In order to solve the established mixed integer nonlinear programming model for optimization of distribution network reconfiguration,this paper employs the improved shuffled frog leaping algorithm,which reserves the features of both the complex evolution algorithm and the particle swarm optimization algorithm and is more capable to seek a global optimal solution.
The optimization of distribution network reconfiguration aims at changing the topological structure of distribution networks through altering the status of switches so as to decrease the power loss and enhance the power quality. The existing methods for optimization of distribution network configuration regard the economic functions as objectives,and obtain an optimal configuration which satisfies the constraints of security and reliability. Since the boundary of these constraints is rigid,these methods are limited to some extent. This paper proposes a new modeling method for optimization of distribution network reconfiguration based on flexible analysis,and it deals with the relationship among the multiple objectives coordinately by introducing the flexible parameters,so that the optimal solution obtained can satisfy the requirements of economy,security and reliability in a more comprehensive manner. In order to solve the established mixed integer nonlinear programming model for optimization of distribution network reconfiguration,this paper employs the improved shuffled frog leaping algorithm,which reserves the features of both the complex evolution algorithm and the particle swarm optimization algorithm and is more capable to seek a global optimal solution.
引文
[1]刘健,毕鹏翔,董海鹏.复杂配电网简化分析与优化[M].北京:中国电力出版社,2002.
[2]刘东,丁振华,滕乐天.配电自动化实用化关键技术及其进展[J].电力系统自动化,2004,28(7):16-19.Liu Dong,Ding Zhenhua,Teng Letian.Key technology and its development in the practicability of distribution automation systems[J].Automation of Electric Power Systems,2004,28(7):16-19.
[3]梁文举,田昊,姚凡.计及可靠性含MVU的配电网动态重构[J].电测与仪表,2017,54(20):76-81.Liang Wenju,Tian Hao,Yao Fan.Distribution network dynamic reconfiguration with M-V-U considering reliability[J].Electrical Measurement&Instrumentation,2017,54(20):76-81.
[4]潘欢,杨丽,胡钢墩.基于改进量子粒子群算法的配电网络优化重构[J].电测与仪表,2018,55(18):31-36.Pan Huan,Yang Li,Hu Gangdun.Distribution network optimal reconfiguration based on improved quantum particle swarm optimization algorithm[J].Electrical Measurement&Instrumentation,2018,55(18):31-36.
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[6]翁嘉明,刘东,何维国,等.基于层次分析法的配电网运行方式多目标优化[J].电力系统自动化,2012,36(4):56-61.
[7]杨滨.配电网运行方式优化方法研究[D].上海交通大学,2009.
[8]赵晓慧,梁标,李海波,等.城市配网自动化可靠性评估与成本效益分析[J].电力科学与技术学报,2015,30(1):73-79.
[9]袁兴华.多目标配电网运行方式优化的研究[D].南昌大学,2013.
[10]朱红,余昆,韦磊,等.配电网运行方式调度及其发展趋势分析[J].华东电力,2013,41(4):822-825.
[11]Sun W,Zhang Y,Wang C.Flexibility evaluation and flexible comprehensive optimization in power systems[J].European Transactions on E-lectrical Power,2012,22(6):846-865.
[12]Sun W,Zhang Y,Wang C,et al.Flexible load shedding strategy considering real-time dynamic thermal line rating[J].IET Generation,Transmission&Distribution,2013,7(2):130-137.
[13]Eusuff M M,Lansey K E.Optimization of water distribution network design using the shuffled frog leaping algorithm[J].Journal of Water Resources Planning and Management,2003,129(3):210-225.
[14]Baran M E,Wu F F.Network reconfiguration in distribution systems for loss reduction and load balancing[J].IEEE Transactions on Power delivery,1989,4(2):1401-1407.
[2]刘东,丁振华,滕乐天.配电自动化实用化关键技术及其进展[J].电力系统自动化,2004,28(7):16-19.Liu Dong,Ding Zhenhua,Teng Letian.Key technology and its development in the practicability of distribution automation systems[J].Automation of Electric Power Systems,2004,28(7):16-19.
[3]梁文举,田昊,姚凡.计及可靠性含MVU的配电网动态重构[J].电测与仪表,2017,54(20):76-81.Liang Wenju,Tian Hao,Yao Fan.Distribution network dynamic reconfiguration with M-V-U considering reliability[J].Electrical Measurement&Instrumentation,2017,54(20):76-81.
[4]潘欢,杨丽,胡钢墩.基于改进量子粒子群算法的配电网络优化重构[J].电测与仪表,2018,55(18):31-36.Pan Huan,Yang Li,Hu Gangdun.Distribution network optimal reconfiguration based on improved quantum particle swarm optimization algorithm[J].Electrical Measurement&Instrumentation,2018,55(18):31-36.
[5]刘莉,陈学允.基于模糊遗传算法的配电网络重构[J].中国电机工程学报,2000,20(2):66-69.
[6]翁嘉明,刘东,何维国,等.基于层次分析法的配电网运行方式多目标优化[J].电力系统自动化,2012,36(4):56-61.
[7]杨滨.配电网运行方式优化方法研究[D].上海交通大学,2009.
[8]赵晓慧,梁标,李海波,等.城市配网自动化可靠性评估与成本效益分析[J].电力科学与技术学报,2015,30(1):73-79.
[9]袁兴华.多目标配电网运行方式优化的研究[D].南昌大学,2013.
[10]朱红,余昆,韦磊,等.配电网运行方式调度及其发展趋势分析[J].华东电力,2013,41(4):822-825.
[11]Sun W,Zhang Y,Wang C.Flexibility evaluation and flexible comprehensive optimization in power systems[J].European Transactions on E-lectrical Power,2012,22(6):846-865.
[12]Sun W,Zhang Y,Wang C,et al.Flexible load shedding strategy considering real-time dynamic thermal line rating[J].IET Generation,Transmission&Distribution,2013,7(2):130-137.
[13]Eusuff M M,Lansey K E.Optimization of water distribution network design using the shuffled frog leaping algorithm[J].Journal of Water Resources Planning and Management,2003,129(3):210-225.
[14]Baran M E,Wu F F.Network reconfiguration in distribution systems for loss reduction and load balancing[J].IEEE Transactions on Power delivery,1989,4(2):1401-1407.