LIGHTNING ELECTROMAGNETIC FIELDS AROUNDTRANSMISSION LINES USING FDTD

For proper design of the transmission and distribution insulation systems, it is necessary to fully clarify the lightning phenomena characteristics. In this paper, two typical power transmission lines (500 kV and 220 kV) are modeled to compute the lightning electromagnetic fields around the transmission lines. The lightning electromagnetic fields around the different power lines are simulated using the finite difference time domain (FDTD) method with Maxwell's equations. Two selected zones are used to capture the electromagnetic fields while lightning strike. The first zone is around the power conductors and the second is at the ground level underneath the power line at 1 m above ground and at the power line right of way (ROW). The correlation between the induced magnetic and electric…