期刊名称：IOP Conference Series: Earth and Environmental Science
印刷版ISSN：1755-1307
电子版ISSN：1755-1315
出版年度：2019
卷号：295
期号：4
页码：1-8
DOI：10.1088/1755-1315/295/4/042002
出版社：IOP Publishing
摘要：In order to study the current variation characteristic and its influencing factors of the main and arcing contact during switching and opening process of high voltage circuit breaker, it is necessary to calculate the current commutation process. Firstly, the current formula in the commutation process was obtained based on the circuit model of current commutation. Secondly,based on the theoretical model of switching arc, the MODELS module and language were used to simulate the resistance variation characteristics of piecewise time-varying arc model. Finally, a simplified model of the SF6 circuit breaker arc quenching chamber was established in ATP-EMTP, and each calculation parameter was selected. The current commutation process was calculated by comparing the effect of main contact resistance and arcing contact resistance on current commutation time. It was found that the effect of the contact resistance on the current commutation time was consistent with the contact variation trend. But the effect of main contact resistance on current commutation time was small, while that of arcing contact was large.
