Consideration of Phase Splitting into two conductors when calculating the Electromagnetic Field of a Power Transmission Line

Abstract

The aim of the work was to refine the calculation of the electric and magnetic field strengths of an overhead power transmission line and to model patterns of electric and magnetic fields of industrial frequency. The novelty of the work consists in clarifying the calculation of the magnitudes of the magnetic and electric field strengths, taking into account the splitting of the phase wire into two conductors and obtaining pictures of the electric and magnetic fields of the 500 kV overhead power line. The method of mirror images was used to calculate the electric and magnetic field strengths. To verify the results obtained and further study of the electromagnetic field, simulation models of a 500 kV overhead power line were developed in the ELCUT and FEMM (Finite Element Method Magnetics) programs that simulate the electric and magnetic fields by the finite element method. Based on the results of the conducted studies, it is concluded that it is necessary to take into account the splitting of the phase into conductors when calculating the electric and magnetic field strengths of power transmission lines and modeling patterns of electromagnetic fields.