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Electric Field Distribution Resulting from a Mobile-Phone-Human Interfacing With an Overhead Power Transmission Line

This paper presents exploitation of the finite difference method (FDM) to estimate electric fields resulting from an overhead power transmission line. The proposed analysis not only investigates the electric field intensity of the power line, but also examines interference caused by a mobile phone operation, sending an outgoing call. By using the FDM, electric field distribution around a human and his/her mobile phone can be graphically presented. This could reveal comprehensive effects of using the mobile phone underneath the power line on the mobile phone user. For demonstration, A 69-kV, 50-Hz overhead power transmission line supported by a H-frame tower is employed for a case study. Area of 8×12 m underneath the power line is discretized as a simulation domain. As a result, electric flux lines around a human with sending outgoing call is very steep sloped and have a descent direction towards the human who is using the mobile phone. Key-Words: Electric Field, Finite Difference Method (FDM), Permittivity, Overhead Power Transmission Line, Boundary Conditions, Mobile Phone Operation