摘要
为定量描述SF6断路器在大电流开断过程中所产生电弧等离子体参数的动态变化,采用Eindhoven微观电弧模型,得到不同条件下电弧特性参数——电导率和热导率的分布;定量描述了温度、压力与粒子碰撞方式对输运特性的影响。基于热力学平衡模型以及Boltzmann方程数值求解与分析,找到电弧等离子体中输运特性的定量描述,为数值模拟SF6电弧等离子体参数变化分布以及能量逸散提供参数。
To quantitatively describe the dynamic variation of the transport parameters of arc plasmas generated in large current interruption of SF6 circuit breakers （ CBs）, the distribution of arc transport characteristics of the electrical con- ductivity and the thermal conductivity based on Eindhoven micro arc model has been obtained. The effect on the transport properties with temperature, pressure and the particle colhsions mode has been describted quantitively. Based on the ther- modynamic equilibrium model and analysis of the numerical solution with Boltzmann equation, the transport properties of arc plasma has been obtained, and the basis of numerical simulation for researching dynamic distribution of SF6 arc plas- ma and energy dissipation has been provided.
出处
《电气开关》
2013年第5期57-61,65,共6页
Electric Switchgear
关键词
SF6断路器
输运特性
电导率
热导率
粒子碰撞
SF6 CB
transport propertiy
electrical conductivity
thermal conductivity
particle collision
