配电网中电压不平衡治理设备的优化配置方法  

Optimal configuration of voltage unbalance control equipment in distribution network

作　　者：何峰 魏光明 尹巧荣 倪源宏 王杰 HE Feng;WEI Guang-ming;YIN Qiao-rong;NI Yuan-hong;WANG Jie(State Grid Gansu Power Company Lanzhou Power Supply Company,Lanzhou 730050,China)

机构地区：[1]国网甘肃省电力公司兰州供电公司,甘肃兰州730050

出　　处：《兰州理工大学学报》2023年第6期95-99,共5页Journal of Lanzhou University of Technology

摘　　要：针对配电网中高比例光伏发电系统导致的电压不平衡问题,提出了一种结合电压灵敏度矩阵法和Gamultiobj函数遗传算法的优化配置方法.首先通过含道路关联矩阵T的电压灵敏度矩阵法分析系统中的电压薄弱节点,确定治理节点集合;然后构建电压不平衡治理设备的多目标优化模型,并引入权重和惩罚因子将其改进为动态模型保证解集的准确性;最后利用小生境(Niche)技术改进Gamultiobj函数遗传算法的子种群环境适应度,求解出考虑电压不平衡度和经济成本的优化配置方案.通过对IEEE30节点系统的仿真,验证了本文方法的可行性.Aiming at the problem of voltage unbalance caused by high proportion of photovoltaic power generation system in distribution network,an optimal configuration method combining voltage sensitivity matrix method and Gamultiobj function genetic algorithm was proposed.Firstly,the voltage sensitivity matrix method with road association matrix T is used to analyze the voltage weak nodes in the system and determine the governing node set.Then the multi-objective optimization model of voltage unbalance control equipment is constructed,and the weight and penalty factor are introduced to improve the model into dynamic model to ensure the accuracy of solution set.Finally,Niche technology was used to improve the environmental fitness of the sub-population of Gamultiobj function genetic algorithm,and the optimal configuration scheme considering voltage imbalance degree and economic cost was solved.The feasibility of the proposed method is verified by the simulation of IEEE30 node system.

关 键 词：电压不平衡治理 电压灵敏度矩阵 Gamultiobj函数遗传算法 多目标优化模型 小生境技术 

分 类 号：TM761[电气工程—电力系统及自动化]