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NUMERICAL STUDY OF THE ARC BEHAVIOR DURING CONTACT OPENING SUPPORTED BY EXPERIMENTS IN LOW-VOLTAGE SWITCHING DEVICES

机译:低电压切换装置中实验支持的接触开口期间ARC行为的数值研究

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This paper focuses on the simulation of the low-voltage arc with an opening contact. A controllable experiment setup with a rotating contact is designed to investigate the arc behaviour. Supported by the experiment, the phenomena of arc elongation and commutation in the case of rotating contact are simulated with the dynamic grid technique introduced. Under the given condition of the external magnetic field and the contact rotating velocity, the stagnation and rapid jump of two arc roots are observed by the calculated and experimental arc root displacement. The voltage of arc column can be divided into four phases and its sharp rising progress results from the increase of the displacement difference between two arc roots in x direction.
机译:本文重点研究带开放触点的低压电弧的仿真。设计了带有旋转触点的可控实验装置,以研究电弧行为。在实验的支持下,采用动态网格技术对旋转接触情况下的电弧伸长和换向现象进行了仿真。在给定的外部磁场和接触转速的条件下,通过计算和实验得出的电弧根位移观察了两个电弧根的停滞和快速跳变。电弧柱的电压可以分为四个阶段,其急剧上升的过程是由于两个电弧根在x方向上的位移差的增加而引起的。

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