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目的掌握电气化铁路作业环境工频电磁场强度,为评价工频电磁场对人体的影响提供现场资料。方法对电力机车司机室、牵引变电所、接触网下等电气化铁路作业环境进行环境工频电磁场强度的调查,根据国家卫生标准进行评价。结果电场强度:接触网下为(1.3±4.3)kV/m,牵引变电所外环境为(2.6±2.8)kV/m,变电所的主控室内和电力机车司机室及机器间均未测出;磁感应强度:接触网下为(0.098±0.06)mT,牵引变电所的主控室为(0.06±0.04)mT,变电所的外环境为(0.14±0.15)mT,电力机车司机室为(0.12±0.10)mT,其机器间为(0.34±0.19)mT。结论电气化铁路作业环境中的工频电场强度符合GB16203-1996《作业场所工频电场卫生标准》;磁场强度低于国际大电网(CIGRE)会议提出的4.4～5.0mT的接触限值,因此,电气化铁路所产生的工频电磁场对作业人员的健康影响在安全范围内。
Objective To grasp the strength of electromagnetic fields of power frequency in the working environment of electrified railway and provide field data for evaluating the influence of industrial frequency electromagnetic fields on the human body. Methods The operating environment of electric locomotive driver’s cab, traction substation, contact line and other electrified railways was surveyed for environmental power frequency electromagnetic field strength and evaluated according to national health standards. Results The electric field intensity was (1.3 ± 4.3) kV / m under the contact net and (2.6 ± 2.8) kV / m outside the traction substation. The control room of the substation and the electric locomotive cabs and the machines were not (0.098 ± 0.06) mT under the contact net, (0.06 ± 0.04) mT in the traction substation, and (0.14 ± 0.15) mT in the substation. The electric locomotive driver The chamber was (0.12 ± 0.10) mT with a (0.34 ± 0.19) mT machine room. Conclusions The industrial electric field intensity in the working environment of electrified railway complies with the hygiene standard of working frequency electric field in GB16203-1996; the magnetic field strength is lower than the 4.4 ~ 5.0mT contact limit proposed by the International CIGRE Conference. Therefore, electrification The power frequency electromagnetic field generated by the railway has a safety impact on the workers.