高铁离线电弧射频和车内低频电磁暴露的特性研究

发布时间：2018-05-20 01:41

  本文选题：弓网电弧 + 电弧干扰　； 参考：《高电压技术》2016年08期

【摘要】：为了有效评估高速铁路列车电磁环境对人体健康的影响,以武汉—广州高速铁路列车(简称武广高铁)离线电弧射频和车内低频电磁暴露为对象,采用现场测试与实验室半实物仿真试验相结合的方式对弓网离线电弧射频开展了研究,即针对高铁线路诸如电分相、锚段关节等一些易发生较大离线电弧的典型位置在武广线开展了现场实测来获得高铁内弓网离线电弧高频电场骚扰强度的频谱特性,在车内对窗口、中轴线、车厢连接端、关键设备等位置进行了现场实测来获得车内低频磁场特性,采用西南交大自主研发的弓网电弧检测系统进行了半实物仿真试验来获得牵引电流、接触压力等参数对弓网离线电弧等效电场骚扰强度的影响,通过对高铁电磁环境实测值与国家标准GB 8702—2014及国际非电离辐射防护委员会(ICNIRP)指南等标准的比较,以及铁路从业人员一些疾病的危险比评估,来分析长期效应对人体健康的影响。研究结果表明:弓网离线电弧频谱主要分布在0.009~500MHz范围内,尤以30~300 MHz之间频谱最为丰富;通过扫频数据计算得到电分相处弓网离线电弧辐射功率密度的时频分布图;基于点频数据采用最小二乘拟合法对高铁离线电弧电磁发射进行统计分析后得到线性回归计算式;由半实物仿真试验得出弓网离线等效电场骚扰强度与列车速度、牵引电流、弓网接触压力有关;车内低频磁场磁感应强度在0.102~34μT范围内;弓网离线电弧高频电磁骚扰对人体健康影响不大,低频磁场符合国内健康标准。该研究结果可以为高铁电气化轨道交通的设计和电磁干扰的抑制以及对人体生物电磁学影响的研究提供必要的数据支持。
[Abstract]:In order to evaluate the effect of electromagnetic environment on human health, the off-line arc radio frequency (RF) and low frequency electromagnetic exposure (LLF) in Wuhan Guangzhou High Speed Railway (WHSR) were taken as objects. The radio frequency (RF) of off-line arc of pantograph-catenary is studied by combining field test and laboratory simulation test, that is, for high-speed railway lines such as electric phase separation. Some typical locations of large off-line arcs such as anchors and joints have been measured in Wuguang line to obtain the frequency spectrum characteristics of the high frequency electric field disturbance intensity of the high frequency electric field of the inner arch and catenary arc of high speed rail, and the connecting ends of the window, the central axis line and the carriage inside the vehicle, In order to obtain the characteristics of the low frequency magnetic field in the vehicle, the key equipment is measured at the same position. The arc detection system of the pantograph-catenary developed by Southwest Jiaotong University is used to carry out the hardware-in-the-loop simulation test to obtain the traction current. The influence of contact pressure and other parameters on the equivalent electric field disturbance intensity of the arc off line is compared with the national standard GB8702-2014 and the guidelines of the International Committee on Non-ionizing radiation Protection (ICNIRP), etc, by comparing the measured values of the electromagnetic environment of high iron with those of the National Standard GB8702-2014, and the International Commission on Non-ionizing radiation Protection. And railway workers to assess the risk of some diseases to analyze the long-term effects on human health. The results show that the spectrum of off-line arc is mainly distributed in the range of 0.009~500MHz, especially in the range of 30 ~ 300 MHz, and the time-frequency distribution of the radiation power density of the off-line arc is obtained by the calculation of the sweep frequency data. Based on the point frequency data, the linear regression formula is obtained by statistical analysis of electromagnetic emission of off-line arc based on the least square fitting method, and the equivalent electric field disturbance intensity and train velocity and traction current are obtained from the hardware-in-the-loop simulation test. The magnetic induction intensity of the low frequency magnetic field in the vehicle is in the range of 0.10234 渭 T, the high frequency electromagnetic disturbance of the off-line arc has little effect on human health, and the low frequency magnetic field conforms to the domestic health standard. The results of this study can provide necessary data support for the design of high-speed electrified rail transit, the suppression of electromagnetic interference and the study of biological electromagnetic effect on human body.
【作者单位】： 西南交通大学电气工程学院;
【基金】：民航创新引导资金(MHRD20140109)~~
【分类号】：R146;U270.381
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本文编号：1912645