Simulation of the process of arc energy-effect in H.V. auto-expansion SF6 circuit breaker

• 摘要：

  A new magnetic hydro-dynamics (MHD) model of arc in H.V. auto-expansion SF6 circuit breaker with considering thermal conduction is set up originally. In addition, the effect of PTFE vapor produced when the nozzle is burned by arc, is considered in the constructed model. Then, the gas flow fields with and without considering conduction are simulated. By comparing the aforementioned two results, the modes of arc heat transfer are deeply analyzed. According to the calculated results in this paper, it is indicated that the maximal temperature with conduction is 90 percent of that without conduction. At last, based on the use of arc energy, the effect of the parameters of arc chamber on breaking characteristics is studied.

• 作者：

  Rong Ming-Zhe;Yang Qian;Fan Chun-Duo

• 刊名：

  Zhongguo Dianji Gongcheng Xuebao Proceedings of the Chinese Society of Electrical Engineering

• 在线出版时间：

  2004