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Detecting ultra-high frequency (UHF) signal method is becoming more and more popular in the area of monitoring partial discharge (PD) in power transformers. In order to learn the characteristics of the signal, we should pay attention to the frequency spectrum of electromagnetic (EM) wave, which may be influenced by power transformers' inner structures, such as core and winding. In this paper, both...
In recent years, ultra high frequency (UHF) method has become a widely used method to detect partial discharge (PD) in transformers. For this method, we should pay attention to two crucial problems: (i) How to detect the UHF signals radiated from PDs; (ii) How to confirm the PD locations accurately. In this paper, a new type of antenna, named multi-element monopole antenna or Goubau antenna, is introduced...
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