超高压交流输电线酒杯型塔塔窗内部磁场测量与仿真

发布时间：2018-07-09 21:12

本文选题：酒杯型塔 + 超高压线路　；参考：《中国电力》2014年11期

【摘要】：目前,超高压交流输电线路使用较多的是酒杯型塔,运行线路空间磁场强度沿酒杯型塔不同位置分布水平不同。随着超高压线路带电作业的开展,对登塔带电作业人员的安全防护提出了较高要求。由于铁磁性材料对磁场分布具有一定的畸变作用,为了明确铁塔内磁场分布水平,确认工作人员在塔窗内工作时受磁场强度影响情况,测量了500 kV交流线路酒杯型塔典型位置点的磁场强度,并仿真计算了测量点处沿铁塔表面的磁场分布水平,测量与计算结果具有较好的一致性。计算与实测结果表明:酒杯型塔塔窗内磁场分布水平远小于国际非电离辐射防护委员会推荐的工频磁场职业暴露值,不会对带电作业人员健康产生影响,带电作业人员在进行500 kV交流线路带电作业时无需对磁场采取防护措施。
[Abstract]:At present, the UHV AC transmission lines mostly use the wine cup tower, and the distribution level of the space magnetic field intensity along the wine cup tower is different. With the development of live operation of EHV line, the safety protection of the operators of the tower live line is put forward. Because ferromagnetic material has some distortion effect on magnetic field distribution, in order to determine the level of magnetic field distribution in the tower, it is confirmed that the workers are affected by the magnetic field intensity while working in the tower window. The magnetic field intensity of the typical position of the wine cup tower of 500 kV AC transmission line is measured and the magnetic field distribution level along the surface of the tower is simulated and calculated. The results are in good agreement with the calculated results. The calculated and measured results show that the level of magnetic field distribution in the glass tower window is much lower than the occupational exposure value of the industrial frequency magnetic field recommended by the International Commission on Non-ionizing radiation Protection, and it will not affect the health of the workers working in charge. Live-line operators do not need to take protective measures against magnetic field in 500 kV AC line.
【作者单位】：三峡大学电气与新能源学院;国网电力科学研究院;
【分类号】：TM75

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