Experimental Studies of Effectiveness of Combined Electromagnetic Silence of Power Lines Magnetic Fields

Purpose of work is combined electromagnetic silence effectiveness experimental studies including active and solid passive parts of overhead power lines magnetic field. Combined silence consists of double-circuit active and U-shaped solid passive part, and characterized by increased efficiency. Combined silence design problem reduced to geometric inverse magneto-quasi-static problem solution. Vector objective function of minimax vector optimization problem calculated based on three-dimensional Maxwell equations solution by COMSOL Multiphysics ® software package. Minimax vector optimization problem solution calculated based on multi-swarm particle optimization algorithm. Global optimum calculated from Pareto-optimal solutions taking into account binary preference relations. During combined silence design active silence system two compensation windings spatial location coordinates and compensation windings currents and phases calculated. The U-shaped solid passive silence parameters also calculated. Designed combined silence effectiveness based on three-dimensional modeling theoretical and experimental studies carried out.