基于电阻接地的电力系统保护方法  

Power system protection method based on resistance grounding

作　　者：胡昀 吴丽 刘乔 HU Yun;WU Li;LIU Qiao(China Energy Construction Group Gansu Electric Power Design Institute Co.,Ltd.,Lanzhou 730050,P.R.China)

机构地区：[1]中国能源建设集团甘肃省电力设计院有限公司,兰州730050

出　　处：《灯与照明》2025年第1期154-156,共3页Light & Lighting

摘　　要：随着电网中电力电缆数量的增加,城市配电网中性点经小电阻接地方式已逐渐被广泛应用。基于电阻的接地方式可快速判定故障点,当发生单相接地故障时会有很大的故障电流产生,电力系统企业可及时找出故障原因并采取解决措施,选择合适的中性点接地方式,以确保电力系统稳定运行。鉴于此,重点分析电阻接地系统单相接地故障特征,同时探讨基于电阻接地的电力系统保护方法,以期为确保电力系统稳定运行提供一定的参考借鉴。With the increase of the number of power cables in the power grid,the method of grounding the neutral point through small resistance in the urban distribution network has gradually been widely used.The grounding method based on resistance can quickly identify fault points.When a single-phase grounding fault occurs,a large fault current will be generated,allowing power system enterprises to promptly identify the cause of the fault and take measures to resolve it.Selecting an appropriate neutral grounding method is essential to ensure the stable operation of the power system.In view of this,this paper focuses on the analysis of single-phase grounding fault characteristics of resistance grounding system,and discusses the protection method of power system based on resistance grounding,in order to provide certain reference for ensuring the stable operation of power system.

关 键 词：电阻接地 电力系统 保护方法 

分 类 号：TM7[电气工程—电力系统及自动化]