To analyze the distribution characteristics of the power frequency electromagnetic field around the cate-nary of the high-speed railway,starting from the disturbance source and object,the three-dimensional geometric space model of the contact line and the rail is constructed by using the finite element analysis software COMSOL Multiphysics.Under the condition that the contact line carries 1000A calculated current,the distribution of the power frequency magnetic field around the contact line and the magnetic induction intensity of the rail surface and the centerline of the line are obtained.The results show that the magnetic field is distributed in the Z and Y axes.In the Z axis,the magnetic induction intensity reaches the maximum near the contact line and gradually decreases around the contact line,decreasing to the minimum on the(Z =300 mm)plane about 300mm from the rail sur-face,and increasing near the rail surface.In Y axis near the contact line,the maximum value appears at the outer surface(Y =0 mm)of the rail,and the attenuation changes on both sides,and the decreasing rate of the outer side is greater than that of the inner side,while the inner side decreases to the minimum at the distance from the outer surface of the rail to the 300mm,and gradually increases until the surface of the contact line,and the minimum value appears inside the contact line.It can be seen that the power frequency electromagnetic exposure around the catenary of high-speed railway will not pose a threat to public health.
high-speed railwaycatenarypower frequency electromagnetic fieldCOMSOL
维普
万方数据
