Abstract
In this technical note, fundamental concepts of six numerical electromagnetic computation methods, which have been used as of today in in the field of high voltage engineering, are explained with emphasis on the finite-difference time-domain (FDTD) method. Then, representative applications of the FDTD method to electromagnetic field and surge simulations are reviewed. They include lightning electromagnetic fields at close and far distances; lightning surges on overhead power transmission line conductors and towers; lightning surges on overhead distribution and telecommunication lines; surges on grounding electrodes; propagation characteristics of power-line-communication signals along power cables; step responses of impulse voltage measuring systems; lightning electromagnetic environment in power substations; lightning surges in wind-turbine-generator towers; lightning surges in photovoltaic arrays; lightning electromagnetic environment in electric vehicles; and lightning electromagnetic environment in airborne vehicles.
