中国电机工程学报2012，Vol.32Issue(1)：154-161,8.
油-纸绝缘结构非线性交直流复合电场计算的定点频域有限元法
Analysis of Nonlinear Electric Field of Oil-paper Insulation Under AC-DC Hybrid Voltage by Fixed Point Method Combined With FEM in Frequency Domain
摘要
Abstract
The fixed point method is adopted to analyze the nonlinear electric field under the AC-DC hybrid voltage, which contains many high order harmonics, and the formula of selecting fixed-point conductivity was proposed. For the stiffness matrix is independent of the current iteration＇s solution, the finite element method （FEM） in frequency domain can be used to obtain the steady periodic results effectively. To verify the proposed algorithm, a typical oil-paper insulation structure of converter transformer under the superimposed AC-DC voltage was calculated by different methods and the results show that the proposed method is suitable to analyze the nonlinear electric fields under AC-DC hybrid voltage of actual converter transformer and other periodic non-sinusoidal electric problems.关键词
定点法/频域有限元/非线性/换流变压器/交直流混合电场Key words
fixed point method/finite element method （FEM） in frequency domain/nonlinear/converter transformer/AC-DC compound field分类
信息技术与安全科学引用本文复制引用
刘刚,李琳,赵小军,李文平,李博,孙优良,纪锋,李金忠..油-纸绝缘结构非线性交直流复合电场计算的定点频域有限元法[J].中国电机工程学报,2012,32(1):154-161,8.基金项目
国家自然科学基金项目(50977030) （50977030）
国家电网公司科技项目(SGKJJSKF[2009]). （SGKJJSKF[2009]）
