一种适用于多T接输配电线路故障测距新算法  

A New Algorithm for Fault Ranging on Multi-T Connection Transmission and Distribution Lines

作　　者：李梁溪 Li Liangxi(State Grid Lianyungang Power Supply Company,Lianyungang Jiangsu 222000,China)

机构地区：[1]国网连云港供电公司,江苏连云港222000

出　　处：《现代工业经济和信息化》2024年第11期282-285,288,共5页Modern Industrial Economy and Informationization

摘　　要：作为电能传输的重要路径,输配电线路的运行安全性、稳定性一直是电力单位重点考察范围。现阶段,我国输配电线路特征慢慢趋向于复杂化,多T接化,应用于输配电线路传统的阻抗法故障测距、行波法测距对于多T接复杂线路适应性较差,这就导致了线路故障排查成本高,效率低下,提出了一种应对于复杂T接输配电线路适应性高的网络坐标化算法,该方法首先对待监测线路已安装的监测终端进行网络坐标化处理,当线路发生故障跳闸时,对待监测线路进行主支线的故障点大致确认,然后结合行波法故障精确定位进行故障点查找,结合监测终端挂网故障定位数据表明,该故障测距新算法具有良好的多T接适应性以及故障测距的稳定性。As an important path of power transmission,the operation safety and stability of transmission and distribution lines have always been the focus of power units.At this stage,the characteristics of transmission and distribution lines in China tend to be complicated and multi-T connection.The traditional impedance fault location method and traveling wave method applied to transmission and distribution lines have poor adaptability to complex multi-T connection lines,which leads to high cost and low efficiency of line fault troubleshooting.This paper proposes a network coordinate algorithm which should be highly adaptable to complex T connection transmission and distribution lines.The method first carries out network coordinate processing for the monitoring terminal installed on the monitoring line.When the fault trip occurs on the line,the fault point of the main branch line is roughly confirmed for the monitoring line,and then the fault point is searched by combining the fault location method with the traveling wave method.The new fault location algorithm has good multi-T connection adaptability and fault location stability.

关 键 词：多T接线路 坐标化新算法 挂网数据 适应性 

分 类 号：TM726[电气工程—电力系统及自动化]