Key Laboratory of Opto-Electronic Technology and Intelligent Control, Ministry of Education, Lanzhou Jiaotong University, No. 88 Anning West Road, Anning District, Gansu Province, Lanzhou 730070, China.
Radiat Prot Dosimetry. 2024 Sep 10;200(14):1329-1338. doi: 10.1093/rpd/ncae162.
The electromagnetic environment of a railway station is composed of electrical, magnetic, and electromagnetic fields, which are generated by various sources such as traction current, voltage, pantograph-catenary arc, locomotive braking, wheel-rail rolling arc, and communication systems. However, there is public growing concern among the public about the potential negative human health effects of this electromagnetic environment. To analyze the distribution of electromagnetic fields in human tissues, electromagnetic simulation software is used to create a model that includes six track contact wires and four waiting passengers on three platforms. This model is used to analyze the magnetic field environment created by high currents in the contact wires of a multi-track high-speed railway station. By varying the loads on different contact wires, the distribution of electric field and magnetic flux density within human tissues of waiting passengers on different platforms is studied using this model. When the track is unoccupied, the calculation results show that the maximum values of the electric field and magnetic flux density of the passenger's human body tissue at the blind way on the platform and 1 m of the blind way are 17.6 mV m-1 and 52.7 μT, respectively. These values increase by 9.28 mV m-1 and 16.4 μT compared to when the track is occupied. When more contact wires are loaded with currents, the electric field mode and magnetic flux density mode of human tissues increase at the same position on the platform. Specifically, when the contact wires of six tracks are loaded with current at the same time, the maximum values of the electric field mode and magnetic flux density mode of the waiting passengers' human tissues at the blind way on different platforms are 29.6 mV m-1 and 88.1 μT, respectively. These maximum values are lower than the public electromagnetic exposure limits that are designated by the International Commission on Non-Ionizing Radiation Protection guidelines. The research results demonstrate that the magnetic field environment generated by the current in the contact wires of a railway station with six tracks does not pose a health risk to human tissues of passengers waiting at the blind way and 1 m of the blind way on the platform. These findings can provide valuable data reference for the formulation of relevant standards for the design of electrified rail transit, as well as the suppression of electromagnetic interference and protection of human bioelectromagnetism.
火车站的电磁环境由电力、磁场和电磁场组成，这些场由牵引电流、电压、受电弓-接触网电弧、机车制动、轮轨滚动电弧和通信系统等各种源产生。然而，公众对这种电磁环境对潜在的负面人类健康影响的担忧日益增加。为了分析人体组织中的电磁场分布，使用电磁仿真软件创建了一个包含六根轨道接触线和三个站台的四名候车乘客的模型。该模型用于分析多轨道高速铁路站接触线中高电流产生的磁场环境。通过改变不同接触线上的负载，使用该模型研究了不同平台候车乘客人体组织内的电场和磁通密度分布。当轨道无人占用时，计算结果表明，平台盲道处乘客人体组织的电场和磁通密度最大值分别为 17.6 mV m-1 和 52.7 μT。与轨道占用时相比，这些值分别增加了 9.28 mV m-1 和 16.4 μT。当更多的接触线加载电流时，同一位置平台上人体组织的电场模式和磁通密度模式都会增加。具体来说，当六根轨道的接触线同时加载电流时，不同平台盲道处等候乘客人体组织的电场模式和磁通密度模式的最大值分别为 29.6 mV m-1 和 88.1 μT。这些最大值低于国际非电离辐射防护委员会指南规定的公众电磁暴露限值。研究结果表明，六轨道车站接触线电流产生的磁场环境不会对平台盲道和盲道 1 米处等候乘客的人体组织造成健康风险。这些发现可为电气化轨道交通设计相关标准的制定、电磁干扰抑制和人体生物电磁保护提供有价值的数据参考。
