Calculation of Electromagnetic Field inside a Wire Structure in a Pulse Field of Lightning Discharge

Calculation of electric field and potential inside a wire structured object in external pulse electromagnetic field of lightning discharge is presented in this paper. Conductive structure is solved as a receiving antenna using program SPAN [1,2] for an arbitrary antenna configuration, consisting of lineic cylindrical segments, in external electromagnetic field. One simple approximation [3] for external pulse field is used, which parameters are calculated for standard pulse function. FFT (Fast Fourier’s Transform) is performed on this function and antenna response in time domain is obtained using IFFT (Inverse Fast Fourier’s Transform) to the results of program SPAN in frequency domain. Results for electric field and for potential, as the consequences of induced currents, are presented in the paper in the form of graphics.