Magnetic field generated by sagging conductors of overhead power lines

This article describes the implementation of the equations that govern the behavior of magnetic fields generated by three‐phase power lines. From the equations obtained in this work, the profiles of the magnetic fields generated by different practical power lines configurations have been analyzed. Results from simulations have been contrasted with experimental data showing a close agreement between them. These values have been also compared with current international regulations showing that in all the situations their values fulfill the reference levels. Additionally, the effect of a conducting ground has been discussed. It has been proved that in practical cases the effects from the earth currents can be neglected as compared with effects from line currents. Furthermore special attention is paid to the catenary shape of overhead conductors. The magnetic field generated by sagging conductors has been calculated and compared with the one generated by straight equivalent conductors. © 2009 Wiley Periodicals, Inc. Comput Appl Eng Educ 19: 787–794, 2011