Method of screening the magnetic field generated by an electrical power transmission line, and electrical power transmission line

摘要

A description is given of a method for screening the magnetic field generated by an electrical power transmission line comprising at least one electrical cable. The method comprises the insertion of the cables into a conduit comprising at least one layer of a non-grain-oriented ferromagnetic material, having a magnetic curve with a maximum value of relative magnetic permeability (mumax) corresponding to a magnetic field value (Hmumax) of less than 1000 A/m. In one example, the ferromagnetic material is a steel with a low content of impurities.