Possible harmful effects of the low frequency electromagnetic field on human health are studied. This paper presents an experimental investigation of the professional electromagnetic environment inside interconnection high-voltage substation (220/90/60/30 kV), operating in Algeria, in order to compare the results with the international establishing limits for human exposure to low frequency electromagnetic pollution. The measurements were recorded in different passages of workers near the worst pollution sources (bus bars, power lines and power transformers). The technique of electric and magnetic field measurement used in this work is based on an original point of view, because we targeted passages of workers in the 220 kV substation and the passage of 220/60 kV transformers. The maximum electric field values are obtained in 220 kV substation, some of these values exceed the limit set by the standards that can affect the health of workers. Regarding the magnetic field values recorded, they are sufficiently lower compared to the safety guidelines.

Keywords: Electromagnetic compatibility, Electromagnetic environment, High voltage substation, Low frequency