配電用柱上変圧器の雷過電圧応答 - 変圧器容量への依存性 -

カテゴリ: 部門大会

論文No: 69

グループ名: 【B】平成19年電気学会電力・エネルギー部門大会講演論文集

発行日: 2007/09/12

タイトル(英語): Response of Pole-Type Distribution Transformer to Lightning Overvoltage Dependent on Rated Power

著者名: 道下 幸志(静岡大学),平岩 秀夫(静岡大学),本郷 保二(東北電力)

著者名(英語): Koji Michishita(Shizuoka Univarsity),Hideo Hiraiwa(Shizuoka Univarsity),Yasuji Hongo(Tohoku Electric Power Co.,Inc.)

キーワード: 雷|雷サージ|柱上変圧器|配電線|移行電圧|lightning|lightning surge|pole-type transformer|distribution line|transfer voltage

要約(日本語): A pole-Type transformer on a power distribution line is vulnerable to lightning overvoltages, and is one of the most frequently damaged instruments in Japan. Therefore, the response of the transformer to the overvoltage draws great concern. In this paper, the authors developed equivalent circuits of pole-type transformers of 10kVA, 20kVA and 30kVA rated power based on modal analysis of measured admittance whereby one can evaluate its response to overvoltages not only on medium-voltage line but also on low-voltage line. The validity of the calculated results obtained by using the developed circuits is demonstrated by comparison with experimental results. The response of transformers to the impulse voltage waveform is influenced by the rated power, and the phase and the degree of such influence is demonstrated.

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