摘要
局部放电检测是目前气体绝缘金属封闭式开关设备(gas insulated switchgear,GIS)状态诊断的关键技术手段。分析各种局部放电检测方法,认为特高频法抗干扰能力较强,检测效率较高,可实现故障模式识别及定位。基于此,采用局部放电检测法发现一起GIS典型悬浮放电缺陷,采用时差定位法确定缺陷位置采用相位同步技术确定缺陷相序。经过解体检查验证,检查结果与特高频诊断结果一致。
Partial discharge detection is a key technological means for gas insulated switchgear state diagnosis at present. This paper analyzes various partial discharge detection methods and considers that ultra-high frequency is provide with stronger anti-jamming capability and higher detection efficiency which may realize fault mode recognition and positioning. On the ba-sis of the above analysis,one GIS typical suspended discharge defect was discovered by applying partial discharge ultra-high frequency detection method. Afterwards,ultra-high frequency time-of-arrival location was used to ensure defect position and phase synchronous technology was used to confirm defect phase. By strip inspection,the result was verified agreed with diagnosis result of ultra-high frequency method.
出处
《广东电力》
2014年第8期98-101,共4页
Guangdong Electric Power
关键词
局部放电
特高频时差定位法
悬浮放电
gas insulated switchgear partial discharge ultra-high frequency time-of-arrival location suspended discharge
