変圧器通過故障遮断時の変圧器高周波短絡インダクタンス

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: 2016/06/01

タイトル(英語): High Frequency Short-circuit Inductance for Transformer at Transformer Limited Fault

著者名: 腰塚　正（東京電機大学工学部電気電子工学科），萩森　英一（東京大学先端電力ネルギー・環境技術教育研究センター），谷口　安彦（東京大学先端電力ネルギー・環境技術教育研究センター），池田　久利（東京大学先端電力ネルギー・環境技術教育研究センター），原田　克彦（九州工業大学大学院工学研究院電気電子工学研究系）

著者名(英語): Tadashi Koshizuka (Tokyo Denki University), Eiichi Haginomori (APET, The University of Tokyo), Yasuhiko Taniguchi (APET, The University of Tokyo), Hisatoshi Ikeda (APET, The University of Tokyo), Katsuhiko Harada (Kyushu Institute of Technology)

キーワード: 変圧器通過故障，短絡インダクタンス，周波数特性　　transformer limited fault，short-circuit inductance，frequency response

要約(英語): Currently, the IEC (International Electrotechnical Commission) standard (IEC62271-100) requires that the transformer limited fault (TLF) shall be verified in the test duty T10, the amplitude factor of which is defined as 1.7 for the transient recovery voltage (TRV). But, the TRV measurements for the TLF at various transformers show that the factor is mostly lower than 1.7. The reason for the low values is considered to be that the short-circuit inductance of transformer at the TRV frequency region is lower than that at the power frequency, and consequently the factor is lower than the standard value 1.7. But, the frequency-dependence of the short-circuit inductance of transformer has not been clarified yet. We measured the short-circuit inductances of model transformers with and without iron core. The short-circuit inductance with the iron core becomes small and equals to one without the iron core at the TRV frequency region. We concluded that this is the reason for the phenomena of low amplitude factor. In addition we showed, by taking eddy current within an iron core and Cu windings into consideration, that the frequency-dependence of the short-circuit inductance could be explained.

本誌: 電気学会論文誌B（電力・エネルギー部門誌） Vol.136 No.6 （2016）

本誌掲載ページ: 596-601 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/ieejpes/136/6/136_596/_article/-char/ja/