Active protection from electromagnetic field hazards of a high voltage power line

Arieh Shenkman, Naum Sonkin^*, and Vitaly Kamensky

Transmission lines are a source of electromagnetic field (EMF) in a wide space and affect many electronic devices. It is also believed that the influence of electromagnetic field is harmful to the health of humans.

It is known that in a limited space it is possible to suppress EMF with the help of Helmholtz coils, which, however, are not applicable in wide spaces.

In the present research it is shown that active suppression of EMF from a transmission line can be achieved by the use of a long loop fed by a controlled current. The loop is placed lengthways on the transmission line, or nearby, in the protected area. The parameters of the loop and the exact place of its arrangement are defined by the proposed calculation, and the current in the loop is set by an automatic control system.

The device was checked on a model and its prototype was successfully used in an actual residential zone.