摘要
为分析高速铁路沿线弓网电弧的幅频特性和评估弓网电弧电磁环境中的公众电磁暴露安全性,选取某高铁线路与轨道中心线垂直10 m(位置A)、20 m(位置B)和30 m(位置C)处进行现场测量,将测量数据经过计算分析获得不同距离处的电场强度分布。结果表明:弓网电弧频率主要分布在2~500 MHz,500~1000 MHz频率内存在个别频点弓网电弧脉冲。不同位置处的电场强度最大值对应的频率为12~16 MHz。位置A、B、C处电场强度最大值分别为21.8 mV/m、18.1 mV/m和7.89 mV/m,均远低于国家环保部和国家质量监督检验检疫总局发布的电磁环境控制公众暴露限值,说明公众在高铁沿线与轨道中心线垂直距离为10 m、20 m和30 m处,弓网电弧不会对其构成健康风险。
To analyze the amplitude frequency characteristics of the pantograph catenary arc along a high-speed railway line and evaluate the safety of the general public against electromagnetic exposure, field measurements were obtained at distances of 10 m, 20 m, and 30 m(points A, B, and C, respectively) from the center of a high-speed railway line. The distribution of electric field strengths at different distances was obtained by calculating and analyzing the measured data. The results showed that the frequencies of the pantograph catenary arc were mainly distributed in the range of 2~500 MHz, and there were some pulses in the range of 500~1 000 MHz. The frequencies of the maximum electric field strengths at different points were mainly distributed in the range of 12~16 MHz. The maximum electric field strengths at points A, B, and C were 21.8 mV/m, 18.1 mV/m, and 7.89 mV/m, respectively,which are significantly lower than the general public's limit of controlling the electromagnetic environment(GB8702―2014) issued by the Ministry of Environmental Protection and the General Administration of Quality Supervision, Inspection and Quarantine. This indicates that the general public is safe at distances of 10 m, 20 m, and 30 m from the center of a high-speed railway line.
作者
阳长琼
逯迈
杜庆中
YANG Changqiong;LU Mai;DU Qingzhong(Key Laboratory of Opto-Electronic Technology and Intelligent Control,Ministry of Education,Lanzhou Jiaotong University,Lanzhou 730070,China)
出处
《辐射研究与辐射工艺学报》
CAS
CSCD
2021年第5期83-90,共8页
Journal of Radiation Research and Radiation Processing
基金
国家自然科学基金项目(51567015、51867014)
甘肃省教育厅基金项目(2018D-08)
兰州交通大学青年基金项目(2017040)
兰州交通大学光电技术与智能控制教育部重点实验室开放课题(KFKT2020-15)资助。
关键词
高速铁路
弓网电弧
幅频特性
安全评估
High-speed railway
Pantograph catenary arc
Amplitude frequency characteristics
Safety evaluation
