Finite Element Method Algorithm with Precise Solver for Electric Apparatus Electric Field
Feng Haiwen1,2, Liu Xiaoming3, Li Longnü3, Zhu Gaojia3
1. School of Electrical Engineering Shenyang University of TechnologyShenyang 110870 China; 2. School of Software Shenyang University of Technology Shenyang 110023 China; 3. Key Laboratory for New Technology of Electrician and Electric Energy in TianjinTianjin Polytechnic University Tianjin 300387 China
Abstract：Based on the self-developed finite element platform for electrical apparatus insulation, a novel mesh algorithm was realized by an improved regions division project. In this project, the boundary uniform dispersion and gradual discrete fusion methods were adopted, the minimum inner angle was taken as the maximum constraint, and the ripple model for mesh optimizing was proposed. Dynamic compressing storage structure and quick access mechanism were adopted in the solver to realize FEM precise computing by Hermite interpolation calculation method. All these measures contributed to deal with contradictions between mesh quality and computing efficiency. The simulation results of typical calculation cases show that the ratio of high-quality messes trending to regular triangle degree γ ≥0.8 is about 87%, and ratio of high-quality messes that minimum native angle of not less than 40° is about 96%. The proposed solver was used to calculate the arc quenching chamber of 550kV SF6 circuit breaker and the typical case with analytic solutions. The comparison analysis shows that the calculation accuracy of the proposed algorithm is 290% and 150% higher than those of Lagrange interpolation calculation method and Ansys Solver respectively, and the average error and maximum error are both decreased.
冯海文, 刘晓明, 李龙女, 朱高嘉. 电器电场有限元精细求解器研究[J]. 电工技术学报, 2018, 33(24): 5789-5796.
Feng Haiwen, Liu Xiaoming, Li Longnü, Zhu Gaojia. Finite Element Method Algorithm with Precise Solver for Electric Apparatus Electric Field. Transactions of China Electrotechnical Society, 2018, 33(24): 5789-5796.
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2018, Vol. 33 
