线圈布置方式对旋弧负荷开关开断能力的影响

Influence of Coil Arrangement on the Breaking Capacity of the Rotary Arc Load Switch

为了提高旋弧灭弧室开断电流的能力,采用Comsol对负荷开关灭弧室的核心部件旋弧线圈的磁场进行仿真分析;以掌握磁场的分布特性及线圈参数对磁场分布的影响规律。在此基础上选取理论上优化、设计上可行的线圈布局;并建立二维模型在实际开断条件下对磁场进行仿真;最后对样机进行试验对比,得出开断容量与设计参数之间的关联。研究结果表明:压缩线圈高度;并且适当调整线圈布置方向可以有效增加线圈产生的磁通量强度,从而可以提高灭弧室开断电流水平,对旋弧灭弧室的设计具有一定的指导意义。

In order to improve the ability of rotary arc chamber breaking current,Comsol was used to analysis the magnetic field of the rotary arc coil which is the core member of the load switch chamber to understand the patterns in the magnetic field and how the parameters of the coil affect the magnetic field.Based on the results,a theoretically optimized and practically feasible layout of the coil will be chosen to set up a two dimensional model and carry out simulation with true interruption conditions,to identify the relationships between switch performance and design parameters and then the original scheme and improved scheme are tested and compared.The results show that a compression coil height and adjust the direction of the coil arrangement can effectively increase the intensity of the magnetic flux generated by the coil,which can improve the arc chamber breaking current level,it also has certain guiding significance to the design of rotary arc chamber.