基于智能电能表的新型电力系统低压配电网线阻抗计量  

Impedance Measurement of Low-Voltage Distribution Network Cable in New Power System Based on Intelligent Electricity Meter

作　　者：朱铮 蒋超 许堉坤 刘畅 ZHU Zheng;JIANG Chao;XU Yukun;LIU Chang(Customer Service Center,State Grid Shanghai Municipal Electric Power Company,Shanghai 200300,China)

机构地区：[1]国网上海市电力公司营销服务中心,上海200300

出　　处：《电子器件》2025年第1期206-210,共5页Chinese Journal of Electron Devices

基　　金：国家电网公司总部科技项目(52094022001Q)。

摘　　要：提出一种基于智能电表测量低压配电网中馈线阻抗的策略,以提供有关电网保护装置安全情况和基础设施受损程度等信息。在两类接地方案中,分别检查了中性线断线故障导致的后果。通过在用户端部署智能电表,基于低压馈线的实验模型评估了使用智能电表测量线路阻抗的可行性。实验结果表明,智能电表可用于估计线路阻抗,以检测可能的中性线保护性接地以及中性线故障。A smart meter for measuring feeder impedance in LV network is proposed to provide information about the safety of power grid protection devices and the extent of infrastructure damage.In two earthing schemes,the consequences caused by the disconnection of neutral line are checked respectively.The feasibility of using smart meters to measure line impedance is evaluated based on the experi-mental model of LV feeders.The experimental results show that the smart meter can be used to estimate line impedance and thus detect possible neutral line protective earth and neutral line fault.

关 键 词：智能电表 低压配电网 阻抗计量 电网安全 

分 类 号：TM744[电气工程—电力系统及自动化]