中国电机工程学报2018，Vol.38Issue(9)：2799-2807,9.DOI:10.13334/j.0258-8013.pcsee.170227
针对换流阀屏蔽系统表面电场的多极子边界元算法研究
Research on Fast Multipole Boundary Element Method for Electrostatic Field of Converter Valve Shielding System
石雨鑫 1王泽忠 1刘丽平2
作者信息
- 1. 高电压与电磁兼容北京市重点实验室(华北电力大学),北京市 昌平区 102206
- 2. 中国电力科学研究院有限公司,北京市 海淀区 100192
- 折叠
摘要
Abstract
The size of the converter valve shielding system is large, and the geometry is irregular. The electrostatic field analysis is large consuming and low efficiency by using the traditional electromagnetic algorithm. In order to solve this problem, using the fast multipole method to accelerate the boundary element method, and using different weighted residual methods, we formed collocation and Galerkin fast multipole boundary element method. In order to further improve the efficiency, a preconditioner was proposed based on the coefficient matrix of the direct integral calculation. Compared with finite element method, it is found that the accuracy of the two methods can meet the requirements of engineering, and the Galerkin fast multipole boundary element method has higher precision. The efficiency of the algorithm was verified by comparing with the traditional boundary element method. The influence of the layer number of tree structure on the precision, time and memory occupancy was analyzed. The preliminary analysis was carried out for ±160 kV converter valve shielding system. The fast multipole boundary element methods are lower consuming and higher efficient, which lay the foundation for further analysis of large scale problems.关键词
换流阀屏蔽系统/多极子边界元/配点法/伽辽金法/预处理Key words
converter valve shielding system/fast multipole boundary element method/collocation/Galerkin/preconditioner分类
信息技术与安全科学引用本文复制引用
石雨鑫,王泽忠,刘丽平..针对换流阀屏蔽系统表面电场的多极子边界元算法研究[J].中国电机工程学报,2018,38(9):2799-2807,9.
