Electromagnetic field effect of high-voltage ac transmission line: A case study

Abstract

As the time varying current flows in the conductor of high-voltage transmission line, there exists electric and magnetic field around the conductor. This paper investigates the magnetic field around the conductor and calculates the magnetic field at 2m height from the ground and checks whether it is safe for humans or other objects in the vicinity. The author defined the surface current densities at the boundary of the conductor and magnetic insulation at all boundaries of the Gaussian surface. A test case had been considered for this investigation. Comsol Multiphysics® had been used for equation set up for solving the problem and simulation.