New Approach of Electromagnetic Fields of the Lightning Discharge

Despite the significant developments in the protection means of electrical and electronic systems against the lightning and its effects. With its unpredictability and aggress if character, the lightning is the most dangerous phenomenon for electrical systems, which requires more interest and greater effort by researchers and designers means of protection. We present in this study a new analytic model of transient electromagnetic fields radiated by the lightning channel. To better estimate our new model, we developed a program 'SIMLIGHTINING' with Matlab to simulated and approved all mathematic components proposed in this study. The results obtained were compared with other simulations and experiment already published have given a very appreciable similar and affinity.