Cathode Spot Velocity after Arc Ignition Affected by Self and External Electromagnetic Force Between Parallel Electrodes Using 3D Numerical Simulation

カテゴリ: 研究会(論文単位)

論文No: EPP20100,SP20042,HV20086

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: 2020/11/19

タイトル(英語): Cathode Spot Velocity after Arc Ignition Affected by Self and External Electromagnetic Force Between Parallel Electrodes Using 3D Numerical Simulation

著者名: Ren Zhenwei(Tokyo City University),Nemoto Yusuke(Tokyo City University),Maeda Yoshifumi(Tokyo City University),Yamamoto Shinji(Fuji Electric Co., Ltd.,),Asanuma Gaku(Fuji Electric Co., Ltd.,),Onchi Toshiyuki(Fuji Electric Co., Ltd.,),Iwao Toru(Tokyo City

著者名(英語): Zhenwei Ren(Tokyo City University),Yusuke Nemoto(Tokyo City University),Yoshifumi Maeda(Tokyo City University),Shinji Yamamoto(Fuji Electric Co., Ltd.,),Gaku Asanuma(Fuji Electric Co., Ltd.,),Toshiyuki Onchi(Fuji Electric Co., Ltd.,),Toru Iwao(Tokyo City University)

キーワード: cathode spot movement|electromagnetic force balance|external and self-magnetic field|numerical simulation|parallel electrode|current path|cathode spot movement|electromagnetic force balance|external and self-magnetic field|numerical simulation|parallel el

要約(日本語): For visually and quantitatively elucidating the contribution of self and external electromagnetic forces of the cathode spot area to the cathode spot movement, a three-dimensional electromagnetic thermal fluid simulation program was used to simulate the a

要約(英語): For visually and quantitatively elucidating the contribution of self and external electromagnetic forces of the cathode spot area to the cathode spot movement, a three-dimensional electromagnetic thermal fluid simulation program was used to simulate the arc movement between parallel electrodes. According to the analysis results, the cathode spot first step occurred when the electromagnetic force balance of cathode spot area was broken, and the direction of self-electromagnetic force at the cathode spot right side pointed forward. The rapid of cathode spot first step significantly increased along with the arc current increasing, and the cathode spot velocity after that increased as well, because the increments of self and external electromagnetic forces benefit to the charged particles transport forward. When the current path changes from straight to reentry model, the cathode spot movement became faster because of the self-electromagnetic force derived from electrodes. In conclusion, the application of external magnetic field or the self-magnetic field derived from the parallel electrodes benefit to break the electromagnetic force balance and promote the rapid of cathode spot first step. After the occurrence of cathode spot first step, the cathode spot velocity is mainly affected by the self-magnetic force derived from the arc or electrodes.

原稿種別: 英語

PDFファイルサイズ: 1,956 Kバイト