A Simulation Study of Induced Surge on Low Voltage Distribution System Nearby the Lightning Point

Abstract

Recently, a lightning surge is recognized as one of the biggest risks to the society. The lightning might give some influences not only on the lightning point but also on systems in nearby the point. In addition, if the surges induced by lightning invade into low voltage distribution lines, there might be a possibility of giving some severe damages to the systems. Therefore, it is necessary to examine these induced phenomena. FDTD (Finite Difference Time Domain) method which treats objects as three-dimensional solid circuits is applied to analyze these induced phenomena. VSTL is the surge analysis simulation program using FDTD method. In this paper, the lightning induced phenomena on the low voltage distribution line in the house are analyzed by using VSTL.