检测GIS局部放电的小型化平面螺旋天线研究  

Study on a Miniaturized Planar Spiral Antenna for Partial Discharge Detection in GIS

作　　者：王永强[1] 李建芳[1] 李长元[1] 郑志宏[1] 崔博源[2] 

机构地区：[1]华北电力大学河北省输变电设备安全防御重点实验室,保定071003 [2]中国电力科学研究院,北京100192

出　　处：《高电压技术》2016年第4期1252-1258,共7页High Voltage Engineering

基　　金：国家高技术研究发展计划(863计划)(2012AA050802);中央高校基本科研业务费项目(13MS73);国家电网公司科技项目(1206112011018)~~

摘　　要：为满足超高频检测法对天线小型化、宽频带的设计要求,设计了一种用于气体绝缘全封闭组合电器(GIS)局部放电检测的小型化平面螺旋天线。该天线是在传统阿基米德螺旋天线的基础上进行正弦波曲折化处理后,来达到小型化的目的。天线的测试结果显示在920 MHz^3 GHz频带范围内电压驻波比(VSWR)<2。天线结构简单,尺寸较小,口径为97 mm,剖面高度为51 mm;具有超宽带的特性,在工作频段内方向性良好,能够实现全向辐射。最后,在实验室搭建了测试平台,将天线和外置超高频传感器进行了局放测量效果的对比,结果表明,所设计的天线特性良好,可用于GIS局部放电检测。In order to meet the requirements of the miniaturized and wide-band antennas for ultra-high frequency（UHF） detection method, we designed a sensor of miniaturized planar antenna for detecting PD in gas insulated substations（GISs）, which is sine-wave meandered based on the traditional Archimedean spiral antenna, in order to reduce the antenna size. The test results indicate that this antenna has a wide frequency band of 920 MHz^3 GHz in terms of the voltage standing wave ratio（VSWR） smaller than 2. The antenna is smaller and its structure is more simple, its diameter is 97 mm, and its height is 51 mm;Besides, this antenna has an ultra-wide-band, as well as great directivity and omnidirectional radiation feature. The partial discharge was tested in the laboratory, detected by the miniaturized planar spiral antenna and external UHF sensor. Compared the measurement results, the proposed antenna is quite promising for PD on-line detection applications.

关 键 词：超高频 气体绝缘组合电器 小型化平面螺旋天线 正弦波曲折臂 超宽带 外置超高频传感器 

分 类 号：TM595[电气工程—电器] TN823.31[电子电信—信息与通信工程]