摘要
针对有限元法进行多介质电场计算过程中求解效率与场域离散精度矛盾问题,结合有限元(FEM)和自适应多重网格(AMG)两种技术,提出多介质电场的自适应多重网格-有限元法(AMG-FEM)求解技术,并在粗细网格之间转换时引入迭代自适应控制转换技术,解决了计算区域参数分布不规律性,避免了网格整体多层细化计算工作量大的问题。通过对550 k V断路器灭弧室电场数值计算,证明了AMGFEM算法的高精度、高效率以及良好适应性,得到了灭弧室内不同开距下的电场分布。
Aiming at the contradictory issue between solution efficiency and field domain disperse precision happening during the process of multimedium electric field calculation of finite element method(FEM),and combining the two technologies of FEM and adaptive multiple grid(AMG),this paper proposed the multimedium electric field AMG-FEM solution technology and introduced the iteration self-adaptation control transform technology to solve the irregularity problem of computational domain parameter distribution,avoiding the computational effort problem of grid entirety multilayer refining.The electric field calculation of 500 kV circuit-breaker arc extinguish chamber verifies that the AMG-FEM algorithm has high precision and efficiency with good adaptation so as to obtain the electric field distribution of different opening distance inside arc extinguish chamber.
作者
薛红涛
XUE Hong-tao(Henan Pinggao Electric Co.,Ltd,Pingdingshan 467001,China)
出处
《电工电气》
2018年第8期30-33,共4页
Electrotechnics Electric
关键词
断路器
灭弧室
多重网格
有限元法
circuit breaker
arc extinguish chamber
multiple grid
finite element method
