智能配网单相接地故障自愈技术研究及应用  

Study and Application on Single-Phase Grounding Fault Self-Healing Technology of Intelligent Distribution

作　　者：彭伟[1] 熊军[1] 吴靖[1] 

机构地区：[1]国网福建省电力有限公司厦门供电公司,福建厦门361004

出　　处：《电力与电工》2013年第4期15-18,共4页Electric Power and Electrical Engineering

摘　　要：介绍了单相接地故障自愈技术发展现状,提出基于零模电流相关的小电流接地故障定位方法,比较故障线路各相邻FTU间的暂态零序电流相似系数,实现了故障区段自动判断。厦门地区现场运行数据和模拟试验表明,该方法适用中性点不接地或经消弧线圈接地系统,能克服故障时刻和过渡电阻的影响,具有较高的实用价值。This paper introduces the development status of single-phase grounding fault self-healing technology,presents the location method for the small current grounding fault based on zero mode current correlation was put forward,compares the similarity coefficient of transient zero-sequence current between the adjacent FTU of fault lines,realizes the fault section automatic judgment. Through the analysis of the field operation data in Xiamen area and artificial simulation test results,it shows that the method for isolated neutral system and Petersen coil grounded system are applicable. This method is able to overcome the influence of fault time and transition resistance,which has high practical value.

关 键 词：故障自愈 单相接地 配电自动化 定位 

分 类 号：TM862.3[电气工程—高电压与绝缘技术]