非合作博弈背景下基于BSA的配电网优化重构  

Optimal Reconfiguration of Distribution Network Based on Backtracking Search Algorithm Under the Background of Non-cooperative Game Theory

作　　者：李奇[1] 艾钰璇 孙彩 邱宜彬 陈维荣[1] LI Qi;AI Yuxuan;SUN Cai;QIU Yibin;CHEN Weirong(School of Electric Engineering,Southwest Jiaotong University,Chengdu 610031,China)

机构地区：[1]西南交通大学电气工程学院,四川成都610031

出　　处：《西南交通大学学报》2024年第2期438-446,共9页Journal of Southwest Jiaotong University

基　　金：国家自然科学基金(51977181);霍英东教育基金(171104)。

摘　　要：为缓解分布式电源大规模接入对配电网安全稳定运行的影响,提出一种考虑分布式电源输出功率的不确定性的有源配电网优化重构方法.首先,采用非合作博弈理论研究电网调度人员与“大自然”之间的博弈关系,将配电网系统中光伏单元的不确定性视为“大自然”博弈方;其次,以有功网损、负荷均衡度、电压偏差最小为目标函数,建立有源配电网优化重构模型,通过回溯搜索算法(backtracking search algorithm,BSA)进行迭代求解,得到最优重构方案;最后,在IEEE33节点系统进行仿真分析,验证模型的正确性及求解算法的有效性.研究结果表明,相较传统重构方法,本文方法更充分考虑了分布式电源输出功率的不确定性,并且在最恶劣的情况发生时,得到的重构策略能够使配电网系统的有功网损、负荷均衡度、电压偏差指标分别降低0.31%、0.59%、0.48%.To mitigate the impact of large-scale integration of distributed generation(DG)on the secure and stable operation of distribution networks,we propose an active distribution network optimal reconfiguration method that considers the uncertainty of distributed power generation output,based on non-cooperative game theory.Firstly,non-cooperative game theory is employed to analyze the game relationship between the distribution network topology and DG output,considering the uncertainty of photovoltaic units in the distribution network system as a player.Secondly,an optimal reconfiguration model with the objective functions of minimizing active network loss,balancing load and minimizing voltage deviation is established.The model is solved iteratively using the backtracking search algorithm(BSA)to obtain the optimal reconfiguration solution.Finally,simulation analysis is conducted using the IEEE33-node system to verify the correctness of the proposed model and the effectiveness of the algorithm.The results indicate that,compared to traditional reconfiguration methods,the proposed optimal reconfiguration approach in this study comprehensively addresses the uncertainty of distributed power generation output.In the most adverse scenario,the reconfiguration strategy can lead to a reduction of 0.31%,0.59%,and 0.48%in active power loss,load balancing,and voltage deviation indices within the distribution network system.

关 键 词：配电网 优化重构 不确定性 非合作博弈 回溯搜索算法 

分 类 号：TM73[电气工程—电力系统及自动化]