Partial Discharge (PD) detection is an effective tool to diagnose the insulation condition of high voltage (HV) equipment. Among detection methods of PD, the ultra‐high frequency (UHF) method is distinguished by high sensitivity and safety operation. However, the UHF band includes many communication and broadcasting line spectral frequencies, which can be interference against the UHF method. From the point of view of the reduction of interferences, the authors proposed the multiple narrow band (MNB) antenna, which can detect PD signals with high sensitivity and eliminate the line spectral noise frequencies. In this paper, a new MNB antenna was evaluated based on fundamental properties and fabricated, then applied to detect discharge signals emitted from breakdown phenomena. The results demonstrated that the fabricated MNB antenna had a good omnidirectional radiation pattern and similar sensitivity with a standard wide‐band Horn antenna. © 2020 Institute of Electrical Engineers of Japan. Published by Wiley Periodicals LLC.

中文翻译：

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用于检测发射放电电磁波的多窄带天线，用于绝缘诊断

局部放电（PD）检测是诊断高压（HV）设备绝缘状况的有效工具。在PD的检测方法中，超高频（UHF）方法以高灵敏度和安全操作而著称。但是，UHF频段包含许多通信和广播线路频谱频率，这可能会干扰UHF方法。从减少干扰的角度出发，作者提出了多窄带（MNB）天线，该天线可以高灵敏度地检测P​​D信号并消除线频谱噪声频率​​。在本文中，基于基本性能对新型MNB天线进行了评估并进行了制造，然后将其应用于检测击穿现象发出的放电信号。结果表明，所制造的MNB天线具有良好的全向辐射方向图，并且具有与标准宽带Horn天线相似的灵敏度。©2020日本电气工程师学会。由Wiley Periodicals LLC发布。