溶融ブリッジと離線アークが及ぼすトロリ線の断線条件の解明に向けたトロリ線の温度分布の算出

カテゴリ: 部門大会

論文No: 53

グループ名: 【B】令和3年電気学会電力・エネルギー部門大会

発行日: 2021/08/12

タイトル(英語): Calculation of Amount of Melting Loss for Broken Condition Elucidation of Contact Wire Caused by Molten Metal Bridge and Disconnection Arc

著者名: 森下穂香（東京都市大学），真栄田義史（東京都市大学），任振威（東京都市大学），根本雄介（東京都市大学），早坂高雅（鉄道総合技術研究所），岩尾徹（東京都市大学）

著者名(英語): Honoka Morishita (Tokyo City University), Yoshifumi Maeda (Tokyo City University), Zhenwei Ren (Tokyo City University), Yusuke Nemoto (Tokyo City University), Takamasa Hayasaka (Railway Technical Research Institute), Toru Iwao (Tokyo City University)

キーワード: ３次元電磁熱流体シミュレーション|溶融ブリッジ|離線アーク|トロリ線|溶損量|three-dimensional electromagnetic thermal fluid simulation|molten metal bridge|disconnection arc|contact wire|amount of melt damage

要約(英語): As the mileage of the electric railway increases, the contact wire and the contact strip may be separated by the unevenness of the contact wire. At that time, the arc discharge is generated by the molten metal bridge. This causes the contact wire to melt and evaporate, causing the contact wire to break. Research is conducted by experiment in order to prevent disconnection of the contact wire. From the experimental results, it was hypothesized that the contact wire would break if the cross section of the contact wire rises above the softening temperature, in addition to the melting damage caused by the molten metal bridge. In this research, the amount of melt loss is calculated in order to elucidate the broken conditions of the contact wire caused by the molten metal bridge and the disconnection arc. The cross-sectional temperature distribution of the contcat wire was calculated, and the melted volume and melted amount could be calculated based on the calculated temperature distribution. As a result, it was possible to show an increase in the amount of erosion as the staying time of the arc increased. Therefore, it is considered that the hypothesis could be explained as a tendency, and it became meaningful to elucidate the disconnection condition of the contcat wire.

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