摘要
在特高压变电站中,若GIS母线气室发生故障击穿,仅依靠人工检测定位故障点耗费时间极长。文章研究了特高频局部放电电磁波信号在GIS设备内部的传播特性,得出电磁波信号在经过GIS设备的各个部件时会大大衰减的结论,并阐述可以通过比较内部特高频传感器采集到的信号幅值来定位GIS设备故障。在此基础上,提出了一种基于保护动作行为和特高频在线监测的GIS母线故障定位方法和系统。以一起特高压GIS母线气室故障击穿实例,验证了次方法的有效性。
In UHV substations,if the GIS bus gas chamber breaks down,it will take a long time to locate the fault point only by manual detection.To study the GIS fault location method with no obvious fault characteristics,this paper firstly studies the propagation characteristics of electromagnetic waves in GIS equipment,and then proposes a fault location method and system of GIS equipment based on protection action behavior and ultra-high frequency online monitoring.Finally,the effectiveness of this method is verified by an UHV GIS fault example.
作者
刘翔
周玉琦
马慧芳
胡坤
沈庆
LIU Xiang;ZHOU Yuqi;MA Huifang;HU Kun;SHEN Qing(Maintenance Company of State Grid Anhui Electric Power Co. , Ltd. , Hefei 230000, China;State Grid Wuhu Electric Power Supply Company, Wuhu 241000, China)
出处
《安徽电气工程职业技术学院学报》
2021年第2期47-54,共8页
Journal of Anhui Electrical Engineering Professional Technique College
关键词
GIS母线故障
保护动作特性
特高频监测
特高压
GIS bus fault
protection action behavior
ultra-high frequency monitoring
UHV
