Parallel computation the potential distribution and electric field along the 500kV line composite insulators

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 was illustrated first in this paper. The formation of element stiffness 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 accurately computing the potential distribution and the electric field intensity on the surface of hardware, the 3D FEM model of 500 kV high voltage transmission line was built and decomposed into 2~6 sub-domains for parallel computation on cluster of 6 workstations. The speedups reveal that parallel computation is superior of improving computational efficiency. The results can be used as the basis to optimize the ringspsila location and reduce the electric field intensity of the insulators string high voltage end.