摘要
使用基本环矩阵编码的智能优化算法在处理配电网重构问题中,通常使用无序的解空间,解空间中局部峰值较多,使得智能优化算法难以发挥自身优势,耗时严重且难以寻找到最优解。针对以上问题,提出一种有序环网编码方式,并基于改进灰狼算法求解含分布式电源(distributed generation,DG)配电网的重构方法。首先,将基本环矩阵的元素按支路顺序排列,再利用启发式规则初步寻找较优解,并将其与初始狼群中的Alpha狼比较,取其较优解作为新的Alpha狼;然后,引入Gamma狼,用于环绕Alpha狼寻优,使狼群保证种群多样性的同时,提高其局部搜索能力;最后,使用改进灰狼算法求解修改后IEEE 33配电网和Taipower 84配电系统,有效地降低系统网损并且提高了系统内的最低电压。经验证,该方法有效可行、算法简单、快速性高,得到的结果更优。
During the process of distribution network reconfig-uration by intelligent optimization algorithm using basic ring matrix coding the disordered solution space is usually utilized,however there are many local peaks in the solution space so that it makes the intelligent optimization algorithm hard to full play its own advantages,besides it consumes too much time and it is difficult to search out the optimal solution.In allusion to above-mentioned defects,an ordered ring network coding scheme was proposed and the improved gray wolf algorithm was used to search out the method to reconfigure distribution network con-taining distributed generation(DG).Firstly,the elements of the basic ring matrix wee arranged according to the order of branches,and then the heuristic rules were used to preliminary find the better solution and this better solution was compared with the alpha wolf in the initial wolf pack,and the better solu-tion was taken as the new alpha wolf.Secondly,the gamma wolf was led in to surround the alpha wolf for optimization to ensure the population diversity of the wolf pack meanwhile to improve its local searching ability.Finally,the improved grey wolf algorithm was used to conduct the simulation in the modi-fied IEEE 33-bus distribution network and the Taipower84 dis-tribution system.Simulation results show that using the pro-posed reconfiguration method the network loss is effectively re-duced and the lowest voltage in the system is improved,thus,the proposed reconfiguration method is effective and feasible,the algorithm is simple and fast,and the obtained res-ults are better.
作者
王鲁明
程静
王维庆
WANG Luming;CHENG Jing;WANG Weiqing(School of Electrical Engineering,Xinjiang University,Urumqi 830047,Xinjiang Uygur Autonomous Region,China;Renewable Energy Grid Connection and Control Technology Ministry of Education Engineering Center,Urumqi 830047,Xinjiang Uygur Autonomous Region,China)
出处
《现代电力》
北大核心
2022年第1期56-63,共8页
Modern Electric Power
基金
新疆维吾尔自治区自然科学基金项目(2018D01C046)
新疆可再生能源发电与并网技术自治区重点实验室开放课题(2020D04048)。
关键词
配电网重构
灰狼算法
有序环网
分布式电源(DG)
distribution network reconfiguration
gray wolf algorithm
ordered ring network
distributed generation(DG)
作者简介
王鲁明(1997),男,硕士,研究方向为电力系统自动化,E-mail:749875755@qq.com;通信作者:程静(1980),女,博士,副教授,研究方向为新能源发电与并网控制技术,E-mail:157511515@qq.com;王维庆(1959),男,硕士,教授,研究方向为可再生能源发电与继电保护,E-mail:3064486275@qq.com。
