A strong leakage magnetic field produced in the operation of dry air-core reactor is one of electromagnetic pollution sources in power system. For solving such electromagnetic pollution

the shield method of leakage electromagnetic field of dry air-core reactor is discussed on the basis of power frequency electromagnetic field principle. The leakage magnetic field at top

bottom and periphery of reactor is analyzed respectively by the use of eddy current FEM of Ansoft

the influence of different shield modes on magnetic field

inductance and current distribution of reactor is calculated through simulation. A prototype reactor with periphery shield function is compared with general reactor in leakage field test. Finally

engineering application suggestion is given based on the simulation result together with actual feasibility.