建筑电气中防雷接地工程技术探究

Exploration of Lightning Protection and Grounding Engineering Technology in Building Electrical Engineering

文中结合实例,对雷击过程中电气设备接地特性进行研究,对比了钢柱接地和避雷带差异。结果表明,钢柱防雷接地工程相比常用的避雷带方式,能够降低近30%的地表电位。相比现行方案,通过钢柱接地的防雷工程更加集中于雷击接触点相邻的连接线,距离雷击接触点的接地网防雷设施电位会小幅度提高,但都能保证电气设备在雷击过程中的安全。

The article combines examples to study the grounding characteristics of electrical equipment during lightning strikes,and compares the differences between steel column grounding and lightning strip grounding.The results show that compared to the commonly used lightning strip method,the lightning protection and grounding engineering of steel columns can reduce the ground potential by nearly 30%.Compared to the current plan,the lightning protection engineering through steel column grounding is more concentrated on the adjacent connecting lines of the lightning contact point.The potential of the lightning protection facilities of the grounding network far from the lightning contact point will be slightly increased,but both can ensure the safety of electrical equipment during lightning strikes.