高速铁路GIS高压开关柜局部放电在线监测装置研究

On-line Monitoring Device for Partial Discharge of High-voltage Switchgear in High-speed Railway GIS

结合我国高速铁路牵引变电所GIS开关柜全密封的特点,根据其在运行中出现的问题,研制了GIS柜局部放电在线监测装置。在研制过程中,认真分析了影响GIS柜局部放电的关键技术,并提出了相应的技术解决方案。针对京广高铁分区所、AT所GIS柜在运行中出现的异声问题,进行现场测试,能够准确的判断GIS柜局部放电的类型、大小、位置,清晰显示GIS柜内部局部放电的幅值,特性图谱等信息,实现了GIS柜局部放电故障的早发现、早预警、早处理。

According to the characteristics of fully sealed GIS switchgear in traction substation of high-speed railway in China and the problems in operation,an on-line monitoring device for partial discharge of GIS switchgear is developed.In the process of development,the key technologies affecting partial discharge of GIS cabinet are carefully analyzed,and the corresponding technical solutions are put forward.In view of the abnormal sounds in the operation of GIS cabinets in Beijing-Guangzhou High-speed Railway Zoning Institute and AT Institute,field testing can accurately judge the type,size and location of partial discharge in GIS cabinets,and clearly display the magnitude and characteristic Atlas of partial discharge in GIS cabinets.It achieves the early detection,early warning and early treatment of partial discharge fault in GIS cabinet.