An Adaptive Fast Multipole Higher Order Boundary Element Method for Power Frequency Electric Field of Substation

• Published in: Chinese physics letters Vol. 27; no. 3; pp. 144 - 147
• Main Author: 张占龙 邓军 肖冬萍 何为 唐炬
• Format: Journal Article
• Language: English
• Published: IOP Publishing 01.03.2010
• Subjects: 500千伏变电站; Algorithms; Boundary element method; Electric fields; Electric power generation; GMRES方法; Mathematical analysis; Mathematical models; Multipoles; Substations; 多极展开; 工频电场; 有限元方法; 自适应; 边界元法
• ISSN: 0256-307X; 1741-3540
• DOI: 10.1088/0256-307X/27/3/034105

An adaptive fast multipole higher order boundary element method combining fast multipole （FM） with a higher order boundary element method is studied to solve the power frequency electric field （PFEF） of substations. In this new technique, the iterative equation solver GMRES is used in the FM, where matrix-vector multiplications are calculated using fast multipole expansions. The coefficients in the preconditioner for GMRES are stored and are used repeatedly in the direct evaluations of the near-field contributions. Then a 500kV outdoor substation is modeled and the PFEF of the substation is analyzed by the novel algorithm and other conventional methods. The results show that, in computational cost and the storages capability aspects, the algorithm proposed in this study has obvious advantages. It is suitable for the calculation of the large-scale PFEF in complex substations and the design of electromagnetic compatibility.