一种传感器型故障指示器在配电网中的应用  

Application of a sensor-type fault indicator in distribution networks

作　　者：杜严行 张国清 王豫宁 王玉财 翟虎成 张泽锋 DU Yanxing;ZHANG Guoqing;WANG Yuning;WANG Yucai;ZHAI Hucheng;ZHANG Zefeng(Ningdong Power Supply Company,State Grid Ningxia Electric Power Co.,Ltd.,Yinchuan Ningxia 750411,China;Shizuishan Power Supply Company,State Grid Ningxia Electric Power Co.,Ltd.,Shizuishan Ningxia 753000,China)

机构地区：[1]国网宁夏电力有限公司宁东供电公司,宁夏银川750411 [2]国网宁夏电力有限公司石嘴山供电公司,宁夏石嘴山753000

出　　处：《宁夏电力》2024年第4期37-40,48,共5页Ningxia Electric Power

摘　　要：为实现配电网单相接地故障的快速选线感知及定位,方便抢修人员快速处理故障,提出一种利用传感器型故障指示器与现有配电自动化终端零序电流进行单相接地故障定位的方法。应用结果表明,该型传感器在单相接地故障判别方面具有灵敏性高、金属性单相接地故障的检测优势,应用该传感器与现有配电自动化终端可准确实现金属性单相接地故障定位。To achieve rapid selection,detection,and localization of single-phase earth faults in distribution networks and to facilitate swift fault resolution by emergency repair teams,a sensor-type fault indicator and system is applied.This paper details the principles behind the detection of single-phase ground faults by this sensor and system,proposing and employing a comprehensive method that integrates the sensor with the existing distribution automation terminals′zero-sequence current for fault location.Practical applications show this sensor′s high sensitivity to single-phase ground faults,with particular proficiency in detecting metallic single-phase earth faults.The combined use of this sensor and current distribution automation terminals allows for the accurate location of metallic single-phase earth faults.The evaluation of this sensor′s application provides insights that contribute to the advancement of single-phase earth fault handling techniques in distribution networks.

关 键 词：配电网 传感器 暂态零序电流 故障指示器 故障定位 

分 类 号：TM862[电气工程—高电压与绝缘技术]