基于稀疏测量的配电网泄漏电流检测技术研究  

Research on Leakage Current Detection Technology for Distribution Network Based on Sparse Measurement

作　　者：李春 朱良杰 张悦 柏晶晶 LI Chun;ZHU Liangjie;ZHANG Yue;BAI Jingjing(Yancheng Power Supply Branch,State Grid Jiangsu Electric Power Co.,Ltd.,Yancheng,Jiangsu 224000,China)

机构地区：[1]国网江苏省电力有限公司盐城供电分公司,江苏盐城224000

出　　处：《自动化应用》2025年第6期182-185,188,共5页Automation Application

基　　金：国网江苏省电力有限公司科技项目(B310A0241QAA)。

摘　　要：配电网高压电缆泄露电流会给电网安全运行造成很大隐患,因此,电力公司要求更准确、更可靠的故障定位系统,以降低停电漏电对经济的影响。结合稀疏测量方式,提出了一种新的提供准确的泄露电流定位的检测方法。该方法首先使用基于迭代状态假设的算法寻找距离故障位置最近的节点,然后检查连接到选定节点的所有线路并定位泄漏电流。通过对一种真实的13.8 kV、134节点配电系统在不同故障场景下的仿真试验,研究了该方法的性能。结果验证了该算法在不确定测量数据下的准确性和鲁棒性。该方法能有效处理测量误差,适用于任何具有横向、负载抽头和异质线路的配电网。The leakage current of high-voltage cables in the distribution network can pose significant risks to the safe operation of the power grid.Therefore,power companies require more accurate and reliable fault location systems to reduce the impact of power outages and leakage on the economy.A new detection method that provides accurate leakage current localization is proposed by combining sparse measurement methods.This method first uses an algorithm based on iterative state assumptions to find the node closest to the fault location,and then checks all lines connected to the selected node and locates the leakage current.The performance of this method was studied through simulation experiments on a real 13.8 kV,134 node distribution system under different fault scenarios.The results validated the accuracy and robustness of the algorithm under uncertain measurement data.This method can effectively handle measurement errors and is applicable to any distribution network with lateral,load tap,and heterogeneous lines.

关 键 词：配电网 泄漏电流 漏电检测 故障定位 

分 类 号：TM757[电气工程—电力系统及自动化]