Calculation of the Arc Velocity Along the Polluted Surface of Short Glass Plates Considering the Air EffectReportar como inadecuado


Calculation of the Arc Velocity Along the Polluted Surface of Short Glass Plates Considering the Air Effect


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State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400044, China





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Abstract To investigate the microphysics mechanism and the factors that influence arc development along a polluted surface, the arc was considered as a plasma fluid. Based on the image method and the collision ionization theory, the electric field of the arc needed to maintain movement with different degrees of pollution was calculated. According to the force of the charged particle in an arc plasma stressed under an electric field, a calculation model of arc velocity, which is dependent on the electric field of the arc head that incorporated the effects of airflow around the electrode and air resistance is presented. An experiment was carried out to measure the arc velocity, which was then compared with the calculated value. The results of the experiment indicated that the lighter the pollution is, the larger the electric field of the arc head and arc velocity is; when the pollution is heavy, the effect of thermal buoyancy that hinders arc movement increases, which greatly reduces the arc velocity. View Full-Text

Keywords: partial arc; force analysis; charge simulation method CSM; electric field; velocity partial arc; force analysis; charge simulation method CSM; electric field; velocity





Autor: Wenxia Sima, Fusheng Guo, Qing Yang * and Tao Yuan

Fuente: http://mdpi.com/



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