超広帯域計測による経年絶縁油と新油及び油種類によるPD電流波形の比較

カテゴリ: 論文誌(論文単位)

グループ名: 【B】電力・エネルギー部門

発行日: 2022/10/01

タイトル(英語): Comparison of PD Current Waveforms between Aged and New Insulation Oils and Oil Types by Super-Wideband Measurement

著者名: 芝田　拓樹（九州工業大学 大学院工学研究院 電気電子工学研究系），福崎　稔（九州工業大学 大学院工学研究院 電気電子工学研究系），松本　卓也（九州工業大学 大学院工学研究院 電気電子工学研究系），大塚　信也（九州工業大学 大学院工学研究院 電気電子工学研究系）

著者名(英語): Hiroki Shibata (Kyushu Institute of Technology), Minoru Fukuzaki (Kyushu Institute of Technology), Takuya Matsumoto (Kyushu Institute of Technology), Shinya Ohtsuka (Kyushu Institute of Technology)

キーワード: 部分放電，超広帯域計測，PD電流，電磁波，絶縁油_x000D_　　partial discharge，super high frequency-wideband measurement，PD current，electromagnetic wave，insulation oil

要約(英語): Liquid insulators such as mineral oil and silicone oil have excellent cooling and insulation performance, but impurities, dissolved gases and/or moisture in the liquid are known to have a significant influence on insulation performance. So far, the authors have shown that partial discharge (PD) current waveforms in mineral oil differ significantly depending on degassing treatment condition and on positive and negative polarity by super high frequency-wideband measurement. In this paper, using aged mineral oil which was used in a distribution transformer over 48 years, difference in PD current waveforms between new and aged mineral oil and between mineral and silicone oils as difference in insulation oil type were investigated by the super high frequency-wideband measurement system, so-called “SHF_PDPW system” with a 33GHz oscilloscope. In addition, PD-emitted electromagnetic (EM) waves in those oils were measured with an antenna with sensitivity in the UHF band, and differences in the polarity and relationship between PD current and PD-emitted EM waves were investigated from the viewpoint of applicability of the UHF method.

本誌: 電気学会論文誌B（電力・エネルギー部門誌） Vol.142 No.10 （2022）

本誌掲載ページ: 482-489 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejpes/142/10/142_482/_article/-char/ja/