加速劣化試験を実施した6.6 kV CVケーブルの水トリー劣化調査に基づく水トリーのモデル化と過渡電界解析による直流漏れ電流・交流重畳電流の算出と交流絶縁破壊電圧の推定

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: 2020/10/01

タイトル(英語): Modeling of Water Trees based on Investigation of Water Tree Degradation of 6.6 kV XLPE Cable Subjected to Accelerated Water-treeing Test and Calculation of DC Leakage Current and AC Superposition Current and Estimation of AC Breakdown Voltage by Transien

著者名: 牧野　広俊（東北大学），八島　政史（東北大学），栗原　隆史（（一財）電力中央研究所），佐藤　智之（東北電力（株）），坂田　学（東北電力（株）），万木　剛（東北電力ネットワーク（株））

著者名(英語): Hirotoshi Makino (Tohoku University), Masafumi Yashima (Tohoku University), Takashi Kurihara (Central Research Institute of Electric Power Industry), Tomoyuki Sato (Tohoku Electric Power Co., Inc.), Manabu Sakata (Tohoku Electric Power Co., Inc.), Tsuyoshi Yurugi (Tohoku Electric Power Network Co., Inc.)

キーワード: CVケーブル，三層同時押出，水トリー，直流漏れ電流，交流重畳法，過渡電界解析　XLPE cable，E-E type，water tree，DC leakage current，AC superposition method，transient electric field analysis

要約(英語): The authors were able to generate a penetrated water tree in an extruded three layer (E-E type) 6.6 kV XLPE cable subjected to an accelerated water-treeing test, and measured DC leakage and AC superposition currents of the cable. In this study, the penetrated water tree was modeled and DC leakage and AC superposition currents were calculated by using transient electric field analysis, and the calculated currents and measured ones were compared. In addition, the conductivity of water trees was selected so that the calculated AC superposition current was equivalent to the average value of the measured values, and DC leakage and AC superposition currents were calculated for a non-bridged water tree obtained after the accelerated water-treeing test. Furthermore, the shapes of water trees were assumed as spheroidal ones, and the DC leakage current, AC superposition current and AC breakdown voltage were analyzed when the length and width of the water tree changed.

本誌: 電気学会論文誌A（基礎・材料・共通部門誌） Vol.140 No.10 （2020）

本誌掲載ページ: 491-499 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/140/10/140_491/_article/-char/ja/