基于特征曲率的配电网电压稳定薄弱节点识别方法  

Method of Distribution Network Voltage Stability Weak Bus Identification Based on Characteristics Curvature

作　　者：孙景钌 胡长洪 陈梦翔 项烨鋆 刘津源 朱启伟 SUN Jingliao;HU Changhong;CHEN Mengxiang;XIANG Yejun;LIU Jinyuan;ZHU Qiwei(State Grid Wenzhou Power Supply Company,Wenzhou 325088,China)

机构地区：[1]国网浙江省电力有限公司温州供电公司,浙江温州325088

出　　处：《湖南电力》2023年第2期79-84,共6页Hunan Electric Power

摘　　要：提出一种基于节点特征曲率的配电网电压薄弱节点识别方法,采用连续潮流法生成网络节点的P-V曲线,建立基于节点有功-电压曲率半径平均变化率的灵敏度指标;利用K-means聚类法对配电网节点灵敏度指标进行分类,定义薄弱节点评价指标并进行薄弱节点分类排序;根据薄弱程度确定系统薄弱区域及节点,为后续无功补偿、薄弱节点跟踪分析提供依据。基于IEEE 33节点系统的仿真试验验证了该方法的有效性和合理性。In this paper,a method for identifying voltage weak bus in distribution network based on the characteristic curvature is proposed for the determination of voltage stability weak bus.The P-V curve of network bus is generated by the extended power flow method,and the sensitivity index based on the average change rate of the active power-voltage curvature radius is established.K-means clustering is used to classify the sensitivity indexes of distribution network bus,and the evaluation indexes of weak bus are defined to classify and sort the weak.The reactive voltage compensation point is confirmed according to the weakness degree.Simulation experiments based on IEEE 33 node system verify the effectiveness and rationality of the proposed method.

关 键 词：薄弱节点识别 曲率灵敏度 连续潮流法 K-MEANS聚类 

分 类 号：TM712.2[电气工程—电力系统及自动化]