GIS局部放电在线监测超高频Moore分形天线研究  

Research on UHF Moore fractal antenna for online GIS PD monitoring

作　　者：王永强[1] 李建芳[1] 郑志宏[1] 欧阳宝龙 李长元[1] 

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,河北保定071003

出　　处：《电测与仪表》2016年第14期10-15,共6页Electrical Measurement & Instrumentation

基　　金：中央高校基本科研业务专项资金项目(13MS73);国家863计划课题项目(2012AA050802)

摘　　要：设计了一种应用于气体绝缘全封闭组合电器(gas insulated substation,GIS)局部放电在线监测的超高频Moore分形天线。首先从理论上分析了该天线的多频特性,使用ANSYS HFSS对Moore分形天线和Hilbert分形天线进行了仿真对比,仿真结果显示Moore分形天线方向性良好,并根据仿真结果制作了天线实物。采用矢量网络分析仪对天线进行实测,测试结果显示Moore分形天线在电压驻波VSWR<5时具有更多频段。最后,在实验室搭建了GIS局放测试平台,使用两种分形天线进行对比测量,结果表明,Moore分形天线特性良好,可用于GIS局部放电在线监测。We designed a sensor of Moore fractal antenna for online monitoring partial discharge（ PD） in gas insulated substations（ GIS）,which is working at ultra-high frequency. Firstly,we analyzed the multi-frequency characteristics of this antenna in theory,used ANSYS HFSS to simulate the Moore fractal antenna and the Hilbert fractal antenna for comparison,and the results show that the Moore fractal antenna had great direction and omnidirectional radiation feature,then we made their physical ones according to the simulation results. The antennas were tested by vector network analyzer,and the results show that the Moore fractal antenna had more frequency bands when the VSWR 5. Finally,the partial discharge was tested in the laboratory,detected by Moore fractal antenna and Hilbert fractal antenna. Compared the measurement results,the antenna proposed was quite promising for PD on-line detection applications.

关 键 词：气体绝缘全封闭组合电器 局部放电 超高频 Moore分形天线 Hilbert分形天线 

分 类 号：TM855[电气工程—高电压与绝缘技术]