石力博, 罗艺霞, 陈平. 工频电场的职业卫生评价[J]. 环境与职业医学, 2014, 31(2): 148-150. DOI: 10.13213/j.cnki.jeom.2014.0039
引用本文: 石力博, 罗艺霞, 陈平. 工频电场的职业卫生评价[J]. 环境与职业医学, 2014, 31(2): 148-150. DOI: 10.13213/j.cnki.jeom.2014.0039
SHI Li-bo , LUO Yi-xia , CHENPing . Occupational Health Assessment of Power Frequency Electric Field[J]. Journal of Environmental and Occupational Medicine, 2014, 31(2): 148-150. DOI: 10.13213/j.cnki.jeom.2014.0039
Citation: SHI Li-bo , LUO Yi-xia , CHENPing . Occupational Health Assessment of Power Frequency Electric Field[J]. Journal of Environmental and Occupational Medicine, 2014, 31(2): 148-150. DOI: 10.13213/j.cnki.jeom.2014.0039

工频电场的职业卫生评价

Occupational Health Assessment of Power Frequency Electric Field

  • 摘要: 变配电站产生的工频电场是一种极低频电场。为了防止其对作业人员产生职业危害,我国制订了工频电场的职业暴露标准。但在职业卫生评价中部分评价人员对各种电压等级的变配电站如何进行评价并不十分清楚。通过综述工频电场的特点及当前工矿企业不同级别变电站的理论及实测数据得出,在职业卫生评价中,工频电场可以识别外界电场间接感应引起的与接触电流有关的电刺激效应,该类效应在10 kV/m电场强度及以下对人体无短期或长期有害影响。工频电场不宜作为主要职业病危害因素。

     

    Abstract: The nature of power frequency electric fields generated by power substations is extremely low frequency electricfields (ELFEF).In order to prevent hazards of ELFEF to workers,China develops an exposure standard for power frequency electricfields.But a part of the evaluation personnel do not fully understand the assessment protocols dealing with various categories ofpower substations defined by voltage.This review summarized the features and current theoretical and experimental data fromdifferent categories of industrial and mining substations with various levels of electric fields.In occupational health assessment,power frequency electric fields could be identified as electric-current-contact-related electrical stimulation indirectly caused bythe interaction between external electric fields,and no long-term or short-term adverse effect would occur to human body if theelectric field was at or less than 10 kV/m.Hence,power frequency electric field should not be considered as a major occupationalhazard source.

     

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