Effect of N2 and O2 Additions to CO2 on Extinction Limitation of Axial Gas Flow Arc

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: 2013/11/01

タイトル(英語): Effect of N2 and O2 Additions to CO2 on Extinction Limitation of Axial Gas Flow Arc

著者名: Yasunobu Yokomizu (Department of Electrical Engineering and Computer Science, Nagoya University), Yasuhiro Hayashi (Department of Electrical Engineering and Computer Science, Nagoya University), Toshiro Matsumura (Department of Electrical Engineering and

著者名(英語): Yasunobu Yokomizu (Department of Electrical Engineering and Computer Science, Nagoya University), Yasuhiro Hayashi (Department of Electrical Engineering and Computer Science, Nagoya University), Toshiro Matsumura (Department of Electrical Engineering and Computer Science, Nagoya University), Amane Majima (Toshiba Corporation), Toshiyuki Uchii (Toshiba Corporation), Katsumi Suzuki (Toshiba Corporation)

キーワード: arc，quenching gas，CO2，arc extinguishing limitation，arc temperature

要約(英語): The arc extinguishing limitation, (dE / dt)lim, in a thermal re-ignition region was evaluated for CO2 and its mixtures with N2 and O2 at a concentration of 0.2 to study variation in (dE / dt)lim due to N2 and O2 additions. A progress effect on (dE / dt)lim did not necessarily emerge in any arc state but arose only in a specific arc state. Further consideration led to the essential facts that the emergence condition of the progress effect depended on the arc-core temperature at the instant of an interrupting current zero. In other words, admixing N2 with CO2 proved to produce an increasing effect on (dE / dt)lim, if the temperature composition in an arc-core cross-section at the current zero showed an axial temperature in a range from about 9 to 14kK. In contrast, mixture of O2 with CO2 was found to contribute to a distinct rise in (dE / dt)lim, if the arc temperature composition at the current zero revealed the axial temperatures below 10kK. This rise in (dE / dt)lim arose more pronouncedly with a lower axial temperature. The above-mentioned facts were explained, in terms of a temperature reduction factor showing a decay rate of an arc temperature with time.

本誌: 電気学会論文誌B（電力・エネルギー部門誌） Vol.133 No.11 （2013） 特集：開閉保護技術

本誌掲載ページ: 858-866 p

原稿種別: 論文／英語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejpes/133/11/133_858/_article/-char/ja/