GIS局部放电特高频时差定位法应用案例分析  

Analysis on Application Case of GIS Partial Discharge Ultra-high Frequency Time-of-arrival Location

作　　者：尤德锋 李兴旺[2] 庞小峰[2] 

机构地区：[1]广州粤能电力科技开发有限公司,广东广州510080 [2]广东电网公司电力科学研究院,广东广州510080

出　　处：《广东电力》2014年第8期98-101,共4页Guangdong Electric Power

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.

关 键 词：局部放电 特高频时差定位法 悬浮放电 

分 类 号：TM835.4[电气工程—高电压与绝缘技术]