刘跟生, 周灿, 巩泉泉. 500 kV全敞开式变电站作业场所工频电场强度分析[J]. 环境与职业医学, 2014, 31(6): 421-425,433. DOI: 10.13213/j.cnki.jeom.2014.0097
引用本文: 刘跟生, 周灿, 巩泉泉. 500 kV全敞开式变电站作业场所工频电场强度分析[J]. 环境与职业医学, 2014, 31(6): 421-425,433. DOI: 10.13213/j.cnki.jeom.2014.0097
LIU Gen-sheng , ZHOU Can , GONG Quan-quan . Intensities of Power Frequency Electric Fields in a 500kV Air Insulated Substation[J]. Journal of Environmental and Occupational Medicine, 2014, 31(6): 421-425,433. DOI: 10.13213/j.cnki.jeom.2014.0097
Citation: LIU Gen-sheng , ZHOU Can , GONG Quan-quan . Intensities of Power Frequency Electric Fields in a 500kV Air Insulated Substation[J]. Journal of Environmental and Occupational Medicine, 2014, 31(6): 421-425,433. DOI: 10.13213/j.cnki.jeom.2014.0097

500 kV全敞开式变电站作业场所工频电场强度分析

Intensities of Power Frequency Electric Fields in a 500kV Air Insulated Substation

  • 摘要: 目的 分析500 kV全敞开式变电站作业场所的工频电场强度。

    方法 利用德国PMM 8053A/PMMEHP-50C电磁场强度测试仪检测作业场所的工频电场,通过构建变电站平面坐标体系详细显示变电站工频电场强度的空间分布,并将检测结果与相关标准进行比较。

    结果 本次研究共检测554个作业点。500 kV配电装置区检测的296个作业点中,工频电场强度> 10 kV/m的作业点有17个, ≥ 5 kV/m但< 10 kV/m的作业点有137个; 220 kV、35 kV配电装置区及主变区的工频电场强度均< 10 kV/m。

    结论 变电站部分作业点的工频电场强度超过10 kV/m,可以通过调整作业人员的巡视路线和接触时间来降低工频电场对作业人员的危害。

     

    Abstract: Objective To measure the intensities of power frequency electric fields in a 500 kV air insulated substation.

    Methods Intensities of power frequency electric fields at selected workstations were measured with PMM 8053A/PMM EHP-50C instrument in Germany. A layout coordinate system of substation plan was constructed to display space distribution of power frequency electric field intensity. Test results were compared with the relevant standards.

    Results A total of 554 workstations were selected for power frequency electric fields measurement, including 296 workstations in the 500 kV power distribution area. In the 500kV power distribution area, 17 workstations reported intensity values greater than 10kV/m, 137 workstations did greater than or equal to 5 kV/m and less than 10 kV/m. In the 220 kV, 35 kV, and main transformer areas, the intensities of all workstations were less than 10 kV/m.

    Conclusion Power frequency electric field intensities greater than 10 kV/m are found in some workstations of the selected substation. Improving the patrol route and reducing exposure time may help to reduce its' health impacts on workers.

     

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