Title :
Adaptive FE analysis of nonlinear and anisotropic DC electric field of converter transformer in HVDC transmission systems
Author :
Li, Jinbiao ; Xie, Dexin ; Wang, Xiaoyan
Author_Institution :
Sch. of Electr. Eng., Shenyang Univ. of Technol., Shenyang
Abstract :
An adaptive finite element (FE) analysis of DC electric field in converter transformer is studied with the nonlinear and anisotropic characteristics of conductivity taken into account in this paper. A posteriori error estimation of the improved SHEPARD interpolation is used in the analysis. The contents of the paper includes governing equations, FE discretizing formulation, expressions of the conductivity, and several numerical examples. The comparison of the numerical results with that obtained by another researches to verify the validity of the method proposed.
Keywords :
HVDC power convertors; HVDC power transmission; finite element analysis; interpolation; power transformers; HVDC transmission system; SHEPARD interpolation; adaptive finite element analysis; anisotropic DC electric field; converter transformer; nonlinear DC electric field; posteriori error estimation; Anisotropic magnetoresistance; Conducting materials; Conductivity; Dielectrics and electrical insulation; HVDC transmission; Iron; Nonlinear equations; Oil insulation; Power transformer insulation; Power transformers;
Conference_Titel :
Automation Congress, 2008. WAC 2008. World
Conference_Location :
Hawaii, HI
Print_ISBN :
978-1-889335-38-4
Electronic_ISBN :
978-1-889335-37-7
