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[目的]分析不同类型500kV变电站运行人员接触工频电场及工频磁场的强度。[方法]利用PMM 8053A/EHP-50C电磁场强度测试仪检测作业场所工频电场及工频磁场强度,将检测结果与相关标准进行比较。[结果]本次研究共检测148个作业点的工频电场及工频磁场强度,其中44个作业点的工频电场强度大于5kV/m,其中1个作业点工频电场强度达10220V/m;所有作业点中工频磁场强度最大值为35.11μT;采用时间加权法,计算得出不同类型500kV变电站运行人员每周56h接触工频电场强度值分别为738V/m、481V/m和144V/m。[结论]不同类型500kV变电站运行人员接触工频电场的强度值均符合小于国家职业卫生标准限值的要求,接触工频磁场强度值也均符合小于国家电力行业标准限值的要求。
[Objective] To analyze the contact strength of industrial frequency electric field and power frequency magnetic field in different types of 500kV substation operators. [Method] The power frequency electric field and power frequency magnetic field intensity at workplace were detected by PMM 8053A / EHP-50C electromagnetic field strength tester. The results were compared with the relevant standards. [Result] The power frequency electric field and power frequency magnetic field of 148 work points were detected in this study. Among them, the power frequency electric field strength of 44 work points was more than 5kV / m, of which, the power frequency electric field intensity of one work point was 10220V / m ; The maximum value of power frequency magnetic field in all work sites is 35.11μT; using time weighting method, it is calculated that the electric field strength values of workers exposed to different types of 500kV substation at 56h per week are 738V / m, 481V / m and 144V / m. [Conclusions] The strength values of workers in different types of 500kV substation in contact with power frequency electric field meet the requirements of the national occupational health standards. The contact power frequency magnetic field strength values also meet the requirements of the national power industry standard limits.