| 纵向磁场对电弧带电粒子密度和电压噪声的影响 |
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| 引用本文： | 李辛.纵向磁场对电弧带电粒子密度和电压噪声的影响[J].沈阳工业大学学报,2006,28(3):357-360. |
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| 作者姓名： | 李辛 |
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| 作者单位： | 沈阳药科大学,基础学院,沈阳,110015 |
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| 摘 要： | 在稳态模型和局域热力学平衡的假设下，从动量方程出发，推导了施加纵向磁场后真空电弧带电粒子密度的数学表达式.在此基础上，分析了纵向磁场对真空电弧带电粒子密度和电弧电压噪声所产生的影响，得知施加纵向磁场之后电弧带电粒子密度增加了而电弧电压噪声减小了，由此抑制了真空电弧由扩散型向集聚型的转变，从而延缓了阳极斑点的生成，提高了真空开关的开断容量.
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| 关 键 词： | 纵向磁场 真空电弧 等离子体密度 电压噪声 阳极斑点 |
| 文章编号： | 1000-1646(2006)03-0357-04 |
| 收稿时间： | 03 13 2006 12:00AM |
| 修稿时间： | 2006年3月13日 |
Effects of axial magnetic field on density and voltage noise of vacuum arc charged particle |
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| LI Xin.Effects of axial magnetic field on density and voltage noise of vacuum arc charged particle[J].Journal of Shenyang University of Technology,2006,28(3):357-360. |
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| Authors: | LI Xin |
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| Affiliation: | School of Basic Courses, Shenyang Pharmaceutical University, Shenyang 110015, China |
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| Abstract: | From the momentum equation,the mathematical expressions of charged particle density in(vacuum) arc by applied axial magnetic field were deduced under the assumption of stationary model and local thermodynamic equilibrium.Effects of the axial magnetic field on the charged particle density in vacuum arc and the voltage noise of arc were analyzed.The results indicate that the charged particle density of arc is enhanced and the voltage noise of arc is reduced with the increasing of the axial magnetic field.The vacuum arc conversion from diffuse type to concentration type is restrained,from which the formation of anode spot is retarded and the switching capacity of vacuum switch is improved. |
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| Keywords: | axial magnetic field vacuum arc plasma density voltage noise anode spot |
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