Key Laboratory of Opto-Technology and Intelligent Control Ministry of Education, Lanzhou Jiao Tong University, No. 88 Anning West Road, Anning District, Lanzhou, China.
Ann Work Expo Health. 2020 Oct 8;64(8):838-851. doi: 10.1093/annweh/wxaa048.
The objective of this work is to evaluate the safety of the electromagnetic environment in the carriage of high-speed trains exposed to power cables when the train is full of passengers. The electromagnetic model of a real carriage, two sets of power cables and the 84 passengers were set up by using COMSOL Multiphysics software based on CRH5. The distributions of induced electric and magnetic fields in the carriage, inside and on the surface of passengers were investigated. The results show that the induced electric and magnetic fields on the windows are greater than on the passengers and the max value of induced magnetic field is 2627.10 µT, and the max value of induced electric field is 2.0 × 105 mV m-1. The maximum values of the induced electric and magnetic fields in 84 passengers' brain tissues were obtained, and it was found that the maximum values occurred in the third row passengers. The distribution of induced electric and magnetic fields at the cross-section of passengers' heads in the third row was also obtained, and we found that the passengers at the window side were greater than those of aisle passengers. In the third row, the maximum values of the induced electric and magnetic fields in the head of two passengers near the window were 94.6 mV m-1, 90.9 µT, 96.3 mV m-1, and 90.4 µT, respectively. We also found the all data were below the ICNIRP Reference Levels, which indicates the electromagnetic exposure caused by power cables when the train is full of passengers will not threat passengers' health.
本工作旨在评估满载乘客高速列车穿越高压电缆时车厢内电磁环境的安全性。基于 CRH5 建立了真实车厢、两组高压电缆和 84 名乘客的电磁模型，采用 COMSOL Multiphysics 软件分析了车厢内、乘客身上及表面的感应电场和磁场分布。结果表明，车窗处的感应电场和磁场大于乘客处，感应磁场最大值为 2627.10 µT，感应电场最大值为 2.0 × 105 mV m-1。得出 84 名乘客脑组织中感应电场和磁场的最大值，发现最大值出现在第三排乘客中。还得到了第三排乘客头部横截面上的感应电场和磁场分布，发现靠窗乘客大于靠过道乘客。在第三排，两名靠窗乘客头部的感应电场和磁场最大值分别为 94.6 mV m-1、90.9 µT、96.3 mV m-1 和 90.4 µT。所有数据均低于 ICNIRP 参考水平，表明满载乘客时高压电缆产生的电磁辐射不会对乘客健康造成威胁。
