Overvoltage in Insulated-cable-type Down Conductor

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: 2017/11/01

タイトル(英語): Overvoltage in Insulated-cable-type Down Conductor

著者名: Shinji Yasui (Department of Electrical and Mechanical Engineering, Nagoya Institute of Technology), Kohei Sakaguchi (Department of Electrical and Mechanical Engineering, Nagoya Institute of Technology), Takashi Tsuchida (Technology Development Headquarter

著者名(英語): Shinji Yasui (Department of Electrical and Mechanical Engineering, Nagoya Institute of Technology), Kohei Sakaguchi (Department of Electrical and Mechanical Engineering, Nagoya Institute of Technology), Takashi Tsuchida (Technology Development Headquarters, Kandenko Co. Ltd.)

キーワード: insulated cable，down conductor，overvoltage，surge propagation，analysis model

要約(英語): Special facilities such as data centers, computer centers, and hospitals with operating rooms require a extremely static electromagnetic environment. In this study, we investigated the use of insulated-cable-type down conductor as a measure for protection from lightning for these facilities. The overvoltage observed at the injection point of the lightning impulse in the insulated cable was evaluated by an impulse test and a transient analysis using a distributed constant circuit. Overvoltages were measured under a lightning impulse voltage using a commercially available insulating cable of 11m length. The distributed circuit parameters of the analysis model for the cable were determined based on the results of the impulse experiments. Using the constructed analysis model, the lightning overvoltages in the injection point of the cable were analyzed for different lengths of the cable and steepness of the lightning current. It was found that the overvoltage caused by the lightning current in the cable can be evaluated by the reflection of the lightning current using a common ground system. In addition, the overvoltage values could be estimated from the steepness of the lightning current, surge impedance and propergation velocity of the cable, and the cable length.

本誌: 電気学会論文誌B（電力・エネルギー部門誌） Vol.137 No.11 （2017） 特集：IWHV2016 & JK2016

本誌掲載ページ: 710-716 p

原稿種別: 論文／英語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejpes/137/11/137_710/_article/-char/ja/