分岐線路における部分放電電流パルスの伝搬特性

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: 2020/02/01

タイトル(英語): Propagation Characteristics of Partial Discharge Current Pulse for Branched Line

著者名: 山下　勝也（宮崎大学），三宅　琢磨（宮崎大学），迫田　達也（宮崎大学），川野　渉（西日本電線（株））

著者名(英語): Katsuya Yamashita (University of Miyazaki), Takuma Miyake (University of Miyazaki), Tatsuya Sakoda (University of Miyazaki), Wataru Kawano (Nishi Nippon Electric Wire & Cable Co., Ltd.)

キーワード: 部分放電，分岐線路，伝搬特性　　partial discharge，branched line，propagation characteristics

要約(英語): At joint and terminal sections of electric power cables, there is possibility to occur partial discharges (PDs) in defects of insulating materials. Therefore, PD measurement is useful from a viewpoint of assessing insulation deterioration of electric power cables. There are some measurement systems to locate PDs, however, it is quite difficult and complicated in the case where cable lines include branched lines because the PD current pulse separately flows at the branch line. To establish a PD location system, the investigation of propagation characteristics of PD current pulse for branched lines is necessary. Based on EMTP simulations and experiments, we evaluated how a PD current pulse propagates at a Y-branch. The results showed that the separation of a PD current pulse is dependent on frequency component of the PD current pulse and the cable impedance after branching. The frequency components of a PD current pulse, which are higher than the resonant frequency of lines, tend to flow into the longer cable side.

本誌: 電気学会論文誌A（基礎・材料・共通部門誌） Vol.140 No.2 （2020）　特集：放電研究の最新動向

本誌掲載ページ: 92-97 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/140/2/140_92/_article/-char/ja/