电测与仪表2016，Vol.53Issue(z1)：235-241,7.
变压器局部放电超高频在线监测天线研究
Research on fourth-order Hilbert fractal antenna for UHF online monitoring of partial discharge in power transformers
摘要
Abstract
Ultra-High-Frequency (UHF) method for detection of partial discharge (PD) has been widely appreciated and studied. It can effectively avoid the low-frequency electromagnetic interference and has the advantage of high sensitivi-ty. Mostly, the UHF antennas used for PD detection have large size, and the characters are narrow frequency pand, this paper designs a Hilbert fractal antenna with multi-frequency and small size for UHF PD online monitoring of transform-er. In the existing basic principle of fourth-order Hilbert four-order fractal antenna technology, the planar antenna is mod-eled by Ansoft Designer. Based on simulation calculation, geometric parameters of the antenna were selected and the fourth order Hilbert fractal antenna was designed. The partial discharge UHF signal of four typical defects for oil-paper insulation was measured by the optimized fourth order Hilbert fractal antenna designed in the laboratory. Experimental results show that the designed antenna is qualified for online PD UHF monitoring.关键词
局部放电/检测/Hilbert分形天线/在线监测/超高频信号Key words
partial discharge/detection/Hilbert fractal antenna/online monitoring/UHF signal分类
信息技术与安全科学引用本文复制引用
沈鑫,束洪春,曹敏,李剑,翟少磊,张林山,林中爱..变压器局部放电超高频在线监测天线研究[J].电测与仪表,2016,53(z1):235-241,7.基金项目
国家高技术研究发展计划(863计划)（2011AA05A120）；云南省教育厅重大研究项目 （863计划）
