电工技术学报  2019, Vol. 34 Issue (13): 2752-2759    DOI: 10.19595/j.cnki.1000-6753.tces.L80312
电机与电器 |
气流场驱动下栅片中弧压提升特性的数值分析
张明1, 王永兴1, 田宇1, 董恩源1, 丛宇2
1.大连理工大学电气工程学院大连 116024;
2. 大连供电公司大连116000
Numerical Analysis of Arc Voltage Increasing Characteristics in Plate Driven by Airflow Field
Zhang Ming1, Wang Yongxing1, Tian Yu1, Dong Enyuan1, Cong Yu2
1. School of Electrical Engineering Dalian University of TechnologyDalian116024China;
2. Dalian Electric Power Supply CompanyDalian116000China
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摘要 建立了以磁流体动力学(MHD)理论为基础的气吹灭弧室电弧被气流吹入栅片过程的三维数值分析模型。与当前空气断路器普遍研究的采用磁场驱动电弧进入铁磁栅片区域并被切割为若干短弧相比,主要研究在灭弧室的进气口处施加气流来驱动电弧运动,并采用绝缘栅片来拉长和冷却空气电弧以提高电弧电压。基于商业软件包ANSYS FLUENT并对其进行二次开发,对气吹灭弧室中的多物理场耦合进行数值计算,仿真分析了不同材料栅片下电弧的运动和电压变化情况,采用全绝缘栅片可以获得最大的电弧电压;并比较分析了栅片间距和入口气压对电弧电压提升的影响,为开关电器中基于提升弧压应用场合的研究提供一定的指导作用。
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张明
王永兴
田宇
董恩源
丛宇
关键词 磁流体动力学栅片灭弧气流场电弧电压    
Abstract:A3-D numerical analysis model for air arcs splitting by airflow field in air blowing chamber based on magneto hydro dynamics(MHD) was established. At present, air circuit breakers generally use magnetic field driving arc to enter ferromagnetic plates area and cut into short arcs. Compare with that, the application of air flow outside to drive arc movement was mainly studied. The insulation plate was also used to elongate and cool the air arc to increase the arc voltage. Based on the commercial software package ANSYS FLUENT, the numerical calculation of multi physical field coupling in air blow chamber was carried out in this paper. The motion and voltage changes of arc under different material plates were simulated and analyzed. The maximum arc voltage can be obtained with all insulated plates. The effects of plate spacing and inlet air pressure on the arc voltage rise of the blowout chamber were compared and analyzed. This work will provide some guidance for the research on the application of arc voltage rise in switching devices.
Key wordsMagneto hydro dynamics(MHD)    plate arc quenching    airflow field    arc voltage   
收稿日期: 2018-07-01      出版日期: 2019-07-17
PACS: TM561  
基金资助:基金:国家自然科学基金重点资助项目(51337001)
通讯作者: 张明,男,1992年生,硕士研究生,研究方向为限流技术及气体电弧现象。E-mail:zm09abc@126.com   
作者简介: 王永兴,男,1973年生,副教授,硕士生导师,研究方向为智能电器、高压电器的可靠性理论及试验研究等。E-mail:yxwang@dlut.edu.cn
引用本文:   
张明, 王永兴, 田宇, 董恩源, 丛宇. 气流场驱动下栅片中弧压提升特性的数值分析[J]. 电工技术学报, 2019, 34(13): 2752-2759. Zhang Ming, Wang Yongxing, Tian Yu, Dong Enyuan, Cong Yu. Numerical Analysis of Arc Voltage Increasing Characteristics in Plate Driven by Airflow Field. Transactions of China Electrotechnical Society, 2019, 34(13): 2752-2759.
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https://dgjsxb.ces-transaction.com/CN/10.19595/j.cnki.1000-6753.tces.L80312          https://dgjsxb.ces-transaction.com/CN/Y2019/V34/I13/2752