Modeling and Active Shielding of Magnetic Field with Different Space-Time Characteristic

Abstract

Modeling of the magnetic field generated by overhead power lines with different type of arrangements of wires and with different space-time characteristic carried out. Two degree of freedom robust system of active shielding of magnetic field for such magnetic field synthesized. The synthesis is based on the multi-criteria game decision, in which the payoff vector is calculated on the basis of the Maxwell equations quasi-stationary approximation solution. The game decision is based on the stochastic particles multiswarm optimization algorithms. It is shown, that for effective shielding of the magnetic field generated by power lines with horizontal arrangement of wires, single shielding winding is sufficient. However, with a triangular arrangement of wires, two shielding windings are required. It is show that synthesized system of active shielding is reduced magnetic flux density up to the sanitary standards of Ukraine on reference levels of power frequency magnetic fields in shielding space located near the overhead power lines.