A vertical conductor circuit model including up- and down-ward traveling waves

A model of a vertical conductor for a circuit analysis is proposed based on calculation results by the Finite-Difference Time-Domain (FDTD) method. The model expresses a frequency-dependent effect of a vertical conductor. In addition, differences in its propagation characteristics of the upward and downward traveling waves are taken into consideration. An experiment is carried out using a reduced-size wind turbine tower model. The simulation results by Electromagnetic Transients Program (EMTP) accurately reproduce the experimental results.