Research on the electromagnetic protection of high voltage cables in high speed EMU of power frequency magnetic field

Aiming at protect passengers with portable pacemaker, it is of vital importance to meet the standard in the design of EMU. In this paper, based on the theory of high voltage cable and electromagnetic protection, the model of high voltage cable passing through the compartment is established to simulate the magnetic flux density of the environment around the cable. In view of the actual situation, using sine, harmonic and inrush current as excitation source of high voltage cable under power frequency magnetic field. The results show that, under these conditions the magnetic field of the high voltage cable cannot affect the normal operation of pacemaker and the length of wire which is without shielding layer should be reduced as much as possible.