Preconditioned GMRES(m) boundary element method for powerfrequency electric field of key devices within substation |
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作者姓名: | ZHANG Zhan long DENG Jun XU Yan HE Wei MAO Yu xing XIAO Dong ping and WEI Jun |
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作者单位: | State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400044, P.R.China;;State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400044, P.R.China;;Electric Power ExperimentResearch Institute, Henan 450000, P.R.China;;State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400044, P.R.China;;State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400044, P.R.China;;State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400044, P.R.China;;Department of Medical Information,Zunyi Medical College, Guizhou, 563003, P.R.China |
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摘 要: | The traditional direct iteration method has low computational efficiency, poor iterative performance and computational difficulties for the analysis of power frequency electric field (PFEF) of key devices within substation, especially involving multi medium.The preconditioning generalized minimal residual (GMRES) boundary element method (BEM) is proposed to enhance computational efficiency of three dimensional PFEF of key devices within substation, where it can’t be solved by the traditional direct iteration method. The basic principle and implementation steps are given. PFEF distribution of switch and break for 500kV substation switch field is presented to demonstrate the efficiency and accuracy of preconditioning GMRES BEM for studying large scale PFEF of key devices within substation. The proposed preconditioning GMRES BEM can not only improve convergence rate and residual convergence rate but also reduce computation cost without decreasing accuracy. Therefore, it is superior to direct iteration method and a suitable algorithm to solve the large scale systems arising from the PFEF of key devices within substation.
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关 键 词: | boundary element method substation power frequency electric field GMRES(m) preconditioning |
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