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- W2363721123 abstract "Complex internal structures of valve halls in ultra-high voltage direct current systems make them difficult to mesh in calculations using the finite element method(FEM). To solve this problem, we built a 3-D model of ±800 k V ultra-high voltage converter station valve hall, and proposed a regionalization mesh generation method following the principle of modularity and independence. The method overcomes the difficulty in mesh generation for complex models, lowers the demands of computer hardware, and can obtain meshes with high quality. Since the complex model has huge number of elements, we choose the incomplete Cholesky conjugate gradient(ICCG) algorithm to solve the model's FEM equations. Eventually, combining the regionalization mesh generation method with the sub-model technology, we have realized the accurate electric field calculation of certain local parts in valve hall. The calculation results show that setting the size of solution region as large as 1.3 times the devices in sub-models, the obtained cut boundaries can meet the demands of sub-model calculation. The maximum error on the boundary is less than 2%, and the calculated sub-model electric field is accurate." @default.
- W2363721123 created "2016-06-24" @default.
- W2363721123 creator A5052481288 @default.
- W2363721123 date "2015-01-01" @default.
- W2363721123 modified "2023-09-25" @default.
- W2363721123 title "Accurate Calculation Method of Electric Field on the Surface of Converter Valve Fittings in UHVDC System" @default.
- W2363721123 hasPublicationYear "2015" @default.
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