Magnetic Field Measurements And Calculations
With 20 KV Underground Power Cables
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
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