Low frequency electromagnetic hot spots in air insulated substations

In the last decades, the interest of researchers and public regarding the effects of electromagnetic field on living beings and in particular on humans has increased more and more. Scientific studies have sought to establish exposure limits for the general public and workers exposed to intense fields due to occupational environments in which they operate. This paper addresses the problem of power frequency electric and magnetic fields occurring in a substation, in the area of access paths and, in particular, near equipment serviced frequently by the workers. The Low Frequency electric and magnetic fields values measured in a typical configured air insulated substation are in good agreement, when compared, with computed values. The best agreement has been obtained for the magnetic field.