Research On The Key Of Lightning Protection Systems Engineering And Influence Analysis Of Lightning Stroke On Intelligent Building

In recent years, the intelligent buildings are in the ascendant, there are multitudinous electronic installations and different kinds of computer systems crowded in them, lightning is one of the primary disturbing source, all kinds of disasters and accidents touched by lightning stroke are going up. How to provide effectively safty protection to the building, reduce the lightning harm degree and loses of lightning disaster, is always the vital problem which the domestic and foreign research scholar and the engineering technicians pay attention together.The lightning protection of the intelligent building is the multi-disciplinary collections which unifies the high voltage and the low voltage, also is an extremely complex systems engineering. At present, domestic and foreign is imperfect in the lightning fundamental research and the computational method, there is not extremely effective protective measure either. The standard and regulations for lightning in force also have deficiencies can't satisfy the requests of design and founction completely. All kinds of electrical engineering softwares about lightning protective design used in the profession now, is only restricted in useing the rolling ball method or the broken-line method to calculate the protective extent of lightning rod. But the directed lightning function of the lightning rod can't provide effective protection to the building, on the contrary, it will bring badly harm to the electronic installations which were placed in the intelligent building. So this kind of computation software is not suitable for the computation and analysis in the intelligent building.In view of exist questions in this domain at present, this article has mainly done the following several aspect works:(1)Research the modern lightning disasters's characteristics and the lightning protective technology's developing trend of the building, also analyse invasive form of the lightning surge and the harm caused by it.(2)Research the distribution of the lightning current in the building's metal structure, after that calculate and analyse the lightning electromagnetic field distribution in the building from the field angle, also check the results against the predecessor's result.(3)Developed the calculate software about transient response in a building by lightning stroke. Make use of this project calculate software can carry on quantitative analysis,including the current and potential that were formed in the metal structures and the electromagnetism field intensity distribution in the building. And through in the actual project application, obtains some practical significative conclusions.(4)Propose the whole lightning protection plan and measures to the intelligent building. Especially aims at the lightning protection of those electronic installations in the building. How to use the shielding technology, the equipotential mesure and the...