周波数領域反射法による複数の異常箇所をもつ同軸ケーブルでの位置標定

カテゴリ: 論文誌(論文単位)

グループ名: 【A】基礎・材料・共通部門

発行日: 2019/09/01

タイトル(英語): Location Attempt of a Coaxial Cable with Multiple Abnormalities by Frequency Domain Reflectometry

著者名: 平井　直志（早稲田大学理工学術院材料技術研究所），大木　義路（早稲田大学理工学術院材料技術研究所／早稲田大学理工学術院電気・情報生命）

著者名(英語): Naoshi Hirai (Research Institute for Materials Science and Technology, Waseda University), Yoshimichi Ohki (Research Institute for Materials Science and Technology, Waseda University/Department of Electrical Engineering and Bioscience, Waseda University)

キーワード: 位置標定，フーリエ変換，劣化監視，高分子絶縁ケーブル，熱劣化　　location，Fourier transform，aging monitoring，polymer-insulated cable，thermal degradation

要約(英語): We have demonstrated that frequency domain reflectometry (FDR) can locate the position of degradation or abnormality in a cable with the assistance of inverse fast-Fourier transform (IFFT). Although it is easily understandable that this FDR-IFFT method can be applied for a location attempt of a cable with more than one abnormality, we have not demonstrated this experimentally. Therefore, we heated two different positions on a coaxial cable of 31.5 m insulated with low-density polyethylene using two heating chambers. As a result, it is clearly indicated that the two positions can be located if we heated there only by 10℃. Furthermore, this method can precisely estimate the length of a heated portion in a coaxial cable when we set the highest measurement frequency higher than 600 MHz.

本誌: 電気学会論文誌A（基礎・材料・共通部門誌） Vol.139 No.9 （2019） 特集：電気電子絶縁材料システムシンポジウム

本誌掲載ページ: 367-372 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/ieejfms/139/9/139_367/_article/-char/ja/