Study On The Lightning Current Model Of Environmental Parameters

Lightning is one of the most common high energy discharge phenomena in nature, and the strong electromagnetic pulse generated by the lightning current causes damage to people’s life and production. Lightning has an increasing impact upon our living as science, technology, and IT. Devising excellent lightning protection systems now become a hot spot in the lightning research community. To design such a system,not only must we have a complete collection of parameters that may affect lightning discharge process, we need also develop a lightning current model for various lightning parameters, because these are the prerequisite and basis of lightning protection research. This is why to this point many researchers have been working on lightning discharge models.This paper drew on previous studies and investigates a lightning model. The previous research has been on the lightning current discharge and the soil resistivity,return stroke speed, channel radius, wave head wave tail time, channel height.According to the land form features of Yunnan Province, this paper studied the model of lightning discharge in Yunnan province.This paper analyzed the six high frequency rate thunder of is representative Yunnan Province: Zhaotong, Lijiang, Chuxiong,Dehong, Wenshan, Xishuangbanna. Finally draw the lightning discharge model is not only concerned with the above factors, and it is also related to the quantity of electric charge, altitude, topography(surface roughness), latitude, longitude and other environmental factors.So, the paper puts forward the lightning current model of environmental parameters.This model’s validity was verified by a simulation comparison with previous models.FDTD discrete method was employed to explore the spatial distribution of lightning electromagnetic field. The above-related two computation methods were numerically simulated using MATLAB and were analyzed by comparing with previous studies of other researchers, validating the feasibility of the methods.The study and methods described in this paper is validate by the afore-mentionedwork. It is substantiate that the lightning discharge model is not only related to factors like return stroke speed and channel radius, as reported by previous studies, but it was also related to parameters of the environment in which the lightning occurs. This model provides some theoretical bases for research work of lightning protection systems.