Electric fields from transmission lines nearby populated areas in Egypt: theory versus experiment

This paper presents calculations and measurements of electric and magnetic fields underneath a 500 kV, three-phase single circuit, bundle-3 overhead transmission line existing nearby a populated area in Egypt. A method based on both the charge simulation technique as well as the method of images has been used for calculating the electric and magnetic fields underneath the line. Moreover, the actual values of the electric and magnetic fields have been measured underneath the line using an appropriate field meter. The calculated values of the electric field agreed those measured experimentally within an error of 5%. On the other hand, the calculated values of the magnetic field agreed with the corresponding measured values within an error of 20% which may be attributed to the effects of the surrounding objects and the unbalanced line currents