Experimental and Simulation Study of Anode Activities of High-Current Vacuum Arcs
It is well known that the melting of electrodes (mainly anode melting) in vacuum arc can increase the metal vapor density around current zero and even lead to interruption failure. In order to clarify the anode melting and evaporation process, a two dimensional transient numerical model was developed. The simulation results such as temperature variation of anode and the melting width and depth were obtained. Meanwhile, series experiments of cup-shaped copper electrodes were conducted. Obvious anode melting was detected, the liquid copper flowed on the contact plate of anode and formed a clockwise swirl flow. The melting of anode was severer than cathode. The material lost of anode was mainly in form of liquid droplets sputtering out of gap or flow into the cup of electrode, the copper vapor evaporated into arc column only accounted for a few portion. Comparison between experiments and simulation has been carried out.
anode melting simulation vacuum arcs
Jia Shenli Yang Dingge Wang Lijun Shi Zongqian
State Key Laboratory of Electrical Insulation and Power Equipment, Xi’an Jiaotong University, Xi’an 710049, China
国际会议
The International Conference on Electrical Engineering 2009(2009 电机工程国际会议)
沈阳
英文
1-5
2009-07-05（万方平台首次上网日期，不代表论文的发表时间）