基于零序电流突变量的配电线路带电回路识别  

Live Circuit Identification of Distribution Lines Based on Zero Sequence Current Sudden Change

作　　者：周霞 周斌 ZHOU Xia;ZHOU Bin(Zhejiang Tusheng Power Transmission and Transformation Engineering Co.,Ltd.,Wenzhou 325000,Zhejiang,China)

机构地区：[1]浙江图盛输变电工程有限公司,浙江温州325000

出　　处：《电气传动自动化》2024年第3期54-57,70,共5页Electric Drive Automation

摘　　要：配电线路带电回路识别过程中,未对线路异常情况进行检查,导致识别效果存在误差,对此,研究基于零序电流突变量的配电线路带电回路识别。首先,分析配电网的等效电路结构,计算零序电流的数值和分布情况。然后,通过零序电流突变量计算,检测三相电流是否平衡,识别存在电流异常的线路和节点。最后,采用深度优先遍历算法进行带电回路的识别,并结合粒子群优化算法提升识别效率。实验结果表明:采用所提方法后,配电线路带电回路识别精度均高于90%;配电线路带电回路识别时间始终低于15s,说明所提方法能够更准确地识别出带电回路,提高计算效率。In the process of distribution line live circuit identification,the abnormal condition of the line is not checked,which leads to the error of the identification effect.Firstly,the equivalent circuit structure of distribution network is analyzed,and the value and distribution of zero sequence current are calculated.Then,through the calculation of zero sequence current mutation,the three-phase current balance is detected,and the abnormal current lines and nodes are identified.Finally,depth-first traversal algorithm is used to identify the charged circuit,and particle swarm optimization algorithm is combined to improve the identification efficiency.Experimental results show that the identification accuracy of distribution line live circuit is higher than 90%after the proposed method is adopted.The identification time of the charged circuit of the distribution line is always lower than 15s,which indicates that the proposed method can identify the charged circuit more accurately and improve the calculation efficiency.

关 键 词：三相不平衡 零序电流突变量 深度优先遍历算法 带电回路识别 粒子群优化算法 

分 类 号：TM73[电气工程—电力系统及自动化]