Author(s)

T. Keikko, J. Isokorpi, S. Reivonen, T. Ruoho and L. Korpinen

Abstract

Magnetic fields from power systems have been studied extensively due to possible health risks. Another reason is disturbances caused by magnetic fields. Power cables are generally used in central areas, but they have not been studied as much as other field sources. In this study the aim was to measure and calculate with different commercial calculation programs the magnetic field from 20 kV underground power cables. The programs used here calculate magnetic field with the Finite Element Method (2D-FEM) and an analytical method. The analytical method is accurate in simple cases. When there are induced earth currents in the soil, the analytical method may produce a small difference. The magnetic field was also measured, and these results were used to analyze

Keywords