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调查研究500 kV变电站不同区域磁感应强度及职业人员个体暴露水平。结果显示,巡视通道区域的工频磁感应强度较小,但在电抗器、电容器附近区域磁感应强度较高,最大磁感应强度达到176.47μT。职业人员24 h工频磁场暴露水平1.5~8.2μT。提示变电站职业人员在接近电抗器、电容器区域长时间作业时,有接触高水平工频磁场的风险。
Investigate the magnetic induction intensity and personal exposure level of professionals in different regions of 500 kV substations. The results show that the power frequency magnetic flux density in the inspection channel area is small, but the magnetic induction intensity in the region near the reactor and capacitor is higher, and the maximum magnetic induction intensity reaches 176.47μT. Occupational personnel 24 h frequency magnetic field exposure level 1.5 ~ 8.2μT. Prompt substation workers near the reactor, capacitor area for a long time operation, there is exposure to high levels of frequency magnetic field risk.