配电网中的故障定位技术分析及应用  

Analysis and Application of Fault Location Technology in Distribution Network

作　　者：张骥 崔晓娟 贾兵 Zhang Ji;Cui Xiao-juan;Jia Bing(State Grid Ningxia Electric Power Co.,Ltd.Yinchuan Power Supply Company,Yinchuan 750001,Ningxia Hui Autonomous Region,China;Yinchuan Rural Electric Power Service Co.,Ltd.,Yinchuan 750001,Ningxia Hui Autonomous Region,China)

机构地区：[1]国网宁夏电力有限公司银川供电公司,宁夏银川750001 [2]银川农村电力服务有限公司,宁夏银川750001

出　　处：《科学与信息化》2024年第18期80-82,共3页Technology and Information

摘　　要：为降低电流状态分析异常带来的配电网故障定位误差问题,提出配电网中的故障定位技术分析及应用研究。结合故障电流方向与主电源电流流向之间的关系,对配电网故障电流进行编码后,以电流状态对于与配电网运行状态之间的适应度作为基准,确定配电网故障电流在当前编码下的适应度值,逐步缩小故障范围,实现定位。在测试结果中,设计基础定位精度最高,准确性最可靠,且与对照组相比,明显更加稳定。In order to reduce the problem of fault location error in distribution network caused by abnormal current state analysis,the analysis and application of fault location technology in distribution network are proposed.Combined with the relationship between the direction of fault current flow and the direction of main power supply current flow,the fault current in distribution network is coded,and the adaptability of current state to the operation state of distribution network is taken as the benchmark to determine the adaptability value of fault current in distribution network under the current code,gradually narrow the fault range and achieve positioning.In the test results,the design foundation positioning precision is the highest,and the accuracy is the most reliable.Compared with the control group,it is significantly more stable.

关 键 词：配电网 故障定位技术 故障电流方向 主电源电流流向 故障电流编码 适应度 

分 类 号：TM7[电气工程—电力系统及自动化]