The ultra‐high frequency (UHF) method is attempted to diagnose the insulation condition of high voltage equipment as detecting partial discharge (PD) – emitted electromagnetic (EM) wave. Although the EM wave caused by PD has broadband, the UHF band includes many communication and broadcasting line spectral frequencies, which can affect PD detection as a noise. The authors have developed the multiple‐narrow band (MNB) antenna to detect discharge signals with high resistance against noisy line spectral frequencies. In this paper, the MNB antenna was applied to measure PD in SF₆ gas and compared with a standard wide‐band Horn antenna to identify the PD detection ability. Furthermore, the MNB antenna was applied to measure PD signal in SF₆ gas under the artificial and the real communication noise to estimate the noise elimination ability of MNB antenna. © 2021 Institute of Electrical Engineers of Japan. Published by Wiley Periodicals LLC.

中文翻译：

---

无线电通信噪声下多窄带天线的局部放电检测

尝试使用超高频（UHF）方法来诊断高压设备的绝缘状况，方法是检测局部放电（PD）–发射的电磁（EM）波。尽管由PD引起的EM波具有宽带，但UHF频带包含许多通信和广播线路频谱频率，这会影响PD检测作为噪声。作者已经开发出了多窄带（MNB）天线，以检测对噪声线性频谱频率具有高抵抗力的放电信号。本文将MNB天线用于测量SF ₆气体中的PD ，并将其与标准宽带Horn天线进行比较，以确定PD的检测能力。此外，使用MNB天线测量SF _6中的PD信号在人工噪声和真实通信噪声的作用下估计MNB天线的消噪能力。©2021日本电气工程师学会。由Wiley Periodicals LLC发布。