Simulation of arc in molded-case circuit breaker with metal vapor and moving electrode
Simulation of arc in molded-case circuit breaker with metal vapor and moving electrode
复制标题
金属蒸气和移动电极塑壳断路器电弧模拟
DOI：
10.1109/icepe-st.2013.6804390
复制
发表时间：
2013
期刊：
影响因子：
--
通讯作者：
M. Sakata
中科院分区：
文献类型：
--
作者：
Y. Enami;M. Sakata
通过使用移动电极的计算流体动力学模拟 (CFD) 来研究塑壳断路器中的电弧行为，并考虑金属蒸气（Cu、Ag/W、Fe）和分解气体（CO2、H2）。背景流体为空气，电流为820A DC。断路器由铜电极、引弧板、磁铁、分流板和塑壳组成。网格变形和重新网格划分技术用于表示电极的运动。在局部热平衡（LTE）假设下，通过温度、压力和气体成分计算电弧等离子体的热力学性质。仿真由商业软件STAR-CCM+进行。结果表明，电弧从电极到弧轮的运动被成功地再现，金属蒸气的冷却效果对电弧等离子体的温度有显着影响。
The behavior of arc in molded case circuit breaker is studied by computational fluid dynamics simulation (CFD) with moving electrode taking account of the metal vapor (Cu, Ag/W, Fe) and the decomposed gases (CO2, H2). The background fluid is air and the electric current is 820A DC. The circuit breaker consists of copper electrodes, arc runner, magnet, splitter plates and molded case. The mesh-morphing and re-meshing technique is used to represent the motion of electrode. With local thermal equilibrium (LTE) assumption, thermodynamic property of arc plasma is calculated by temperature, pressure, and gas composition. The simulation is performed by commercial software STAR-CCM+. It is shown that the motion of arc from electrode to arc runner is reproduced successfully, and the cooling effect of metal vapor has significant influence on the temperature of arc plasma.