建筑塔吊感应雷过电压产生机理及防护研究

Analyse of Lightning-induced Overvoltage in Tower Cranes and its Protection

探讨雷电的放电过程及其对建筑塔吊感应雷过电压的产生机理,提出静电感应分量和电磁感应分量是塔吊感应雷过电压的主要构成部分,并建立模型求解感应雷过电压和采取在塔吊上架设避雷线和两点同时接地法可以有效地防护感应雷过电压,从根本上提高建筑塔吊在雷电电磁场环境中工作的安全性和可靠性具有重要意义和实用价值。

This paper analysed the lightning discharge progress and its mechanism of lightning - induced over-voltage in tower cranes, research work showed the hghtning- induced overvoltage is generally made up ot the electrostatic and electromagnetic induction component, found a way to protect lighting- induced overvoltage effectively with two point earthing simultaneity, and solved the lighting- induced overvoltage by building model , which have great significance and practical value for the salty and reliability of tower cranes in thunderbolt electromagnetic field.