A Novel Approach to Conduct Resistance Calculation Considering Skin Effectp

[摘要] With the rapid growth of power electronics, increasingly more non-linear loads access the power grid, aggravating harmonic pollution. To calculate harmonic loss, it is necessary to calculate the resistance of a conductor considering skin effect, however, most method base on the current density on a semi-infinite plane. Based on the principle of engineering electromagnetics, this paper derived the distribution of current density on a finite plane, which is also suitable for the transmission line, and therefore developed a more practical and precise enough version of frequency-dependent resistance of current carrying bar or transmission line considering skin effect. In order to make this method more convincing, a corresponding physical experiment was also conducted, proving the feasibility of this method.

[发布机构] China Electric Power Research Institute, Haidian District, Beijing; 100192, China^1;State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Changping District, Beijing; 102206, China^2

[效力级别] 电工学

[关键词] Electromagnetics;Frequency dependent;Harmonic loss;Harmonic pollution;Nonlinear load;Physical experiments;Resistance calculation;Semi-infinite plane