沿海地区不同电压等级变电站电磁环境参数测量与分析

Measurement and Analysis of the Electric-Magnetic Environment for Different Substation in Coastal Area

摘要: 沿海地区大量变电站的投入使用导致电磁环境问题日益突出，提高变电站附近居民和职工生活质量已成为普遍认识和需求。而沿海地区气候环境明显不同于其他地区，为了系统了解高压变电站产生的电磁环境情况和空间分布规律，对变电站附近居民和运行职工健康和准确认识电磁环境提供指导和依据。论文开展了沿海地区变电站电磁环境测量工作，通过分析不同电压等级变电站工频电磁场分布规律，得到了不同电压等级变电站内工频电磁环境空间分布特性和超标区域。结果表明对于500 kV变电站内电场强度最高，变压器前工作走廊电场强度主要为2~10 kV/m，而沿海地区变电站大部分测量区域电场强度满足国际电磁标准规定的职业暴露标准。同时沿海地区变电站磁场环境较为良好，均小于国家标准推荐值，100 μT

Abstract: With the widely use of substation in coastal area, the electric-magnetics environment problem has become more and more serious. Improving the life quality of nearby residents and staff is more and more important. However, due to the different climate environment of coastal area, in order to systematically understand the electric-magnetics environment and its spatial distribution caused by high voltage substation, so that we can provide guidance and evidence for nearby residents and staff. In the paper, the electric-magnetic environment measurement work of coastal area is done. Through analyzing the distribution rule of different voltage levels of substation, the spatial distribution of power frequency electric field and magnetic field, and the excessive area are obtained. Results indicate that the maximum electric field occurs in 500 kV substation. The electric field density mainly concentrates about 2~10 kV/m for corridor before transformer, while most of the measured domain satisfies the international professional standard. Meantime, the magnetic field environment for coastal region substation is relatively good, which is less than the recommended national standard, 100 μT.