并行计算合成绝缘子串电压分布及金具表面电场强度  

Parallel Computation of Voltage Distribution Along Composite Insulator Strings and Electric Field Intensity on the Surface of Hardware Fittings

作　　者：厉天威[1] 阮江军[2] 杜志叶[2] 黄道春[2] 

机构地区：[1]广西电力工业勘察设计研究院,南宁530023 [2]武汉大学电气工程学院,武汉430072

出　　处：《电工技术学报》2010年第3期6-13,共8页Transactions of China Electrotechnical Society

摘　　要：实际工程应用中的大规模电磁场数值计算需要借助于并行计算。本文首先介绍了适合并行计算的非重叠型区域分解法。基于非重叠型区域分解法的有限元并行计算在单元分析和线性方程组的形成及求解上都是并行的,在传统的只对线性方程组实行并行求解的方法的基础上进一步提高了并行度。为了更精确地对500kV高压输电线路合成绝缘子串上的电位分布以及金具表面电场强度进行计算,建立三维有限元模型,并对该模型分别划分为2～6个分区在本研究室构建的机群环境下实行并行求解。结果表明并行计算能够有效地提高电磁分析的计算效率,计算数据可作为优化屏蔽环位置,以及确定并降低绝缘子端部电场强度的依据。There exists large-scale numerical computation in electromagnetic field which will turn to parallel computation in practical engineering application. Non-overlapping domain decomposition method （DDM） which is suitable of parallel computation is illustrated first in this paper. The formation of element stiff matrix and the solution of the system of linear equations of finite element method （FEM） are all parallelized based on the non-overlapping DDM. So, it improves the parallel degree further than the traditional solution which only parallelizes the system of linear equations. For more accurate computation the potential distribution and the electric field intensity on the surface of hardware fittings, the 3D FEM model of 500kV high voltage transmission line is built and decomposed into 2～6 sub-domains for parallel computation on cluster of 6 workstations in the laboratory. The speedups reveal that parallel computation is superior of improving computational efficiency. The results can be used as the basis to optimize the rings’ location and reduce the electric field intensity of the insulator string high voltage end.

关 键 词：并行计算 区域分解法 高压输电线路 电位分布 

分 类 号：TM151[电气工程—电工理论与新技术] TM216[一般工业技术—材料科学与工程]