Application of multi-conductor transmission lines on the transient analysis in power substation

Some structures in a power system can be modeled as multi-conductor transmission lines or transmission line in order to analyze the transient process when the switches are operated or electromagnetic pulse is imposed. In this paper the modeling of a transmission line and its finite difference time domain (FDTD) method are researched, and then extended to the transmission line network and nonuniform line. After the method is tested, some examples are finally analyzed in order to predict the transient voltage in power substations.