有限元外推在高压电场分析计算中的应用  

Application of FEM Extrapolation to HV Electrical Field Analysis

作　　者：周浩[1] 

机构地区：[1]浙江大学电机系,310027

出　　处：《高电压技术》1994年第1期17-20,共4页High Voltage Engineering

摘　　要：介绍了有限元外推方法．采用外推方法可以把线性元有限元数值解的精度从O（h2）提高至O（h3）．大大改善了解的精度．因此．采用有限元外推方法只需采用很少的剖分单元就能满足一定的精度要求，节省大量计算时间．通过对一典型边值问题的分析计算，有限元外推方法的这些优点得到充分体现．另外，又通过对线板式静电除尘器导线起晕电压的分析计算．有限元外推方法在工程问题计算中的实际价值得到证实．This paper introduces the extrapolation method of FEM. Based on the extrapolation method of FEM, the accuracy of numerical solution by linear clement can be improved from o(h2) to o(h2), thus can substantially improve the accuracy of the solutions in entire field region. Therefore, for a given accuracy,the extrapolation method of FEM only need a very little divided elements, thus can greatly reduce comptation time. From the calculation of a typical boundary- value problem, the advantages of the method have been evidently shown. Moreover, the corona onset voltage of wire-platetype precipitator is analysed by the extrapolation of FEM, the practical value of the method in engineering is thus demonstrated.

关 键 词：有限元 高压电场 计算 

分 类 号：TM152[电气工程—电工理论与新技术]