Numerical Thermofluid Simulation on Decaying Arc Behavior in CO2/O2/C4F7N gas mixture flowat Different Oxygen Ratios

カテゴリ: 研究会(論文単位)

論文No: EPP23088,SP23030,HV23059

グループ名: 【A】基礎・材料・共通部門 放電・プラズマ・パルスパワー/【B】電力・エネルギー部門 開閉保護/【B】電力・エネルギー部門 高電圧合同研究会

発行日: 2023/11/03

タイトル(英語): Numerical Thermofluid Simulation on Decaying Arc Behavior in CO2/O2/C4F7N gas mixture flow at Different Oxygen Ratios

著者名: AUNG TAT HTUT(金沢大学),田中 康規(金沢大学),中野 裕介(金沢大学),石島 達夫(金沢大学)

著者名(英語): TAT HTUT AUNG(Kanazawa university),Yasunori Tanaka(Kanazawa university),Yusuke NAKANO(Kanazawa university), Tatsuo Ishijima(Kanazawa university)

キーワード: ＣＯ２／Ｏ２／Ｃ４Ｆ７Ｎ　ｇａｓ　ｍｉｘｔｕｒｅ|ＳＦ６　ｇａｓ　ａｌｔｅｒｎａｔｉｖｅｓ|ｆｒｅｅ　ｒｅｃｏｖｅｒｙ|ａｒｃ　ｑｕｅｎｃｈｉｎｇ　ｍｅｄｉｕｍ|ｄｉｆｆｅｒｅｎｔ　ｏｘｙｇｅｎ　ｒａｔｉｏｓ|ｃｕｒｒｅｎｔ　ｉｎｔｅｒｒｕｐｔｉｏｎ|CO2/O2/C4F7N gas mixture|SF6 gas alternatives|free recovery|arc quenching medium|different oxygen ratios|current interruption

要約(日本語): Numerical thermofluid simulation was conducted for decaying arc behavior in CO2/O2/C4F7N gas mixtures at different oxygen content ratios for development of SF6 alternative gas circuit breakers. First, steady state calculation was made for 50 A DC arcs in CO2/O2/C4F7N gas mixtures. After that, transient calculation was made for free recovery condition, one fundamental condition for decaying arcs. For these calculation, thermodynamic and transport properties of CO2/O2/C4F7N was calculated in advance as function of temperature and O2 content ratios with fixed 10%C4F7N. Results indicate that O2 mixing may remarkably affect the arc behavior for thermal mode in current interruption._x000D_

要約(英語): Numerical thermofluid simulation was conducted for decaying arc behavior in CO2/O2/C4F7N gas mixtures at different oxygen content ratios for development of SF6 alternative gas circuit breakers. First, steady state calculation was made for 50 A DC arcs in CO2/O2/C4F7N gas mixtures. After that, transient calculation was made for free recovery condition, one fundamental condition for decaying arcs. For these calculation, thermodynamic and transport properties of CO2/O2/C4F7N was calculated in advance as function of temperature and O2 content ratios with fixed 10%C4F7N. Results indicate that O2 mixing may remarkably affect the arc behavior for thermal mode in current interruption._x000D_

本誌: 2023年11月6日-2023年11月7日放電・プラズマ・パルスパワー/開閉保護/高電圧合同研究会-1

本誌掲載ページ: 27-32 p

原稿種別: 英語

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