A Novel Technology for Magnetic-Field Mitigation: High Magnetic Coupling Passive Loop

In this paper, a new concept of passive-loop technique called the “high magnetic coupling passive loop” is presented. The proposed shielding technique is characterized by high performances and takes all of the advantages of passive and active shields. The shielding technique can be adopted in different application fields: power lines, line transformer connections, etc. In this paper, the proposed shielding is deeply analyzed. The working principle will be explained and validated by means of simulations and laboratory measurements on some prototypes. Finally, the actual performances of the shield installed on a high-voltage power line are presented, discussed, and compared with the result obtained by means of classical passive loops.