高铁接触网接触线对车厢内乘客电磁辐射研究

摘要

为了有效评估高铁接触网接触线在车厢内产生的低频电磁场对车厢内人体健康的安全性,基于有限元软件COMSOL Multiphysics,构建一个集司乘人员、车厢和辐射源为一体的电磁模型,仿真计算了车厢内人体感应电场和感应电流密度大小.研究结果表明,接触网接触线所产生的低频电场在人体躯干中所产生的感应电场和感应电流分布不均匀,其最大值分别为Emax=1.276 mV/m、Jmax=8.832 8μA/m2;在人体头部中枢神经系统中感应电场最大值为Emax=1.149 9 mV/m,感应电流密度最大值为Jmax =0.983 7μA/m2.对比《电磁环境控制限值》(GB8702-2014)中公众暴露的控制限值,文中计算结果均远远小于GB8702-2014规定的控制限值.仿真计算结果说明接触网接触线所产生的低频电场对车厢内司乘人员的健康不会构成健康威胁.%In order to effectively evaluate the safety of low frequency electromagnetic field exposure in the carriage caused by speed-railway contact line,the finite element method software COMSOL Multiphysics is employed to construct the electromagnetic model with the integration of the drivers,passengers,carriage and radiation sources.The distribution of the induced electric field and induced current density in body has been investigated.The results show that the distribution of induced electric field and induced current density is not uniform in the human body caused by the contact line.And the max values are Emax =1.276 mV/m and Jmax =8.832 8 μA/m2,respectively.The max values of induced electric field and induced current density are 1.1499 mV/m and 0.983 7 μA/m2 in the central nervous system of the human head.Compared with the Control Limits of Electromagnetic Environment (GB 8702-2014),all these data are far below the basic values,which indicates the low frequency radiation caused by contact line will not threat passengers' health.