高压电器2013，Vol.49Issue(3)：64-68,5.
喷口结构对半自能式SF6断路器最短燃弧时间的影响
Impact of Nozzle Structure on Short Arc Time of Half-self-extinguish SF6 Circuit Breaker
摘要
Abstract
Minimum arc time is an important parameter of a circuit breaker. This paper raises an optimization scheme to control the minimum arc time. First, a mathematical model of electric field and flow field in arc chamber is built up based on electric arc theory and fluid mechanics to determine the minimum arc time of the SF6 circuit breaker via simulation; Then, the impact of nozzle structure on the arc time is analyzed, and a scheme for reducing the minimum arc time is proposed by changing the elevation angle at the throat exit. At last, an optimum scheme to achieve the minimum arc time is obtained by comparing five different elevation angles.关键词
SF6断路器/短燃弧时间/喷口/仿真Key words
SF6 circuit breaker/short arc time/nozzle/simulation分类
信息技术与安全科学引用本文复制引用
金立军,董骁,闫书佳,李水清..喷口结构对半自能式SF6断路器最短燃弧时间的影响[J].高压电器,2013,49(3):64-68,5.
