CAJ | 학술논문

为克服目前气体绝缘组合电器（GIS）局部放电检测外置传感器的缺点，设计了一种外置小型准TEM喇叭天线传感器，它采用介质填充、楔形立体微带和背腔结构优化等技术手段，既可使喇叭天线小型化，又能得到优良的驻波比特性，可方便地从盆式绝缘子处接收局部放电产生的电磁泄漏信号，并能有效抑制周围空间低频电磁干扰。理论计算和实验室实测特性数据表明，该宽带天线在超高频（UHF）频段内，有较好的检测性能，并具有多频段选择特性。最后，在实验室GIS模拟缺陷装置上，将TEM喇叭天线与已有的微带贴片天线进行了局放测量效果的对比。
위극복목전기체절연조합전기（GIS）국부방전검측외치전감기적결점，설계료일충외치소형준TEM나팔천선전감기，타채용개질전충、설형입체미대화배강결구우화등기술수단，기가사나팔천선소형화，우능득도우량적주파비특성，가방편지종분식절연자처접수국부방전산생적전자설루신호，병능유효억제주위공간저빈전자간우。이론계산화실험실실측특성수거표명，해관대천선재초고빈（UHF）빈단내，유교호적검측성능，병구유다빈단선택특성。최후，재실험실GIS모의결함장치상，장TEM나팔천선여이유적미대첩편천선진행료국방측량효과적대비。
An outer-positioned small quasi-TEM horn antenna sensor was designed and constructed for detecting the partial discharge in gas insulation substations （GIS）, which could expediently receive the electromagnetic wave leaked from the basin type insulator, and effectively suppress low frequency electromagnetic interference from sur- roundings. Certain effective structures such as dielectric filled horn, wedge-shaped substrate and backing cavity were utilized to miniaturize during the antenna design process so as to optimize standing-wave ratio characteristics. The model calculation and experimental data measured in the laboratory shows that the antenna possesses a good radia- ting performance and a multi-band property when working in the ultrahigh frequency （UHF） band. The partial dis- charge was tested in the device of imitation GIS defect, detected by TEM horn antenna and existing microstrip patch antenna concurrently, then, the measurement results were compared.