Electromagnetic field coupling to overhead wires: Comparison of wire antenna and transmission line model in the frequency and time domain

The paper deals with different approaches for the analysis of electromagnetic field coupling to overhead wires of finite length based on the wire antenna theory, and transmission line method (TLM). The formulation based on the wire antenna theory in the frequency domain is based on the corresponding Pocklington equation, while the time domain formulation is based on the space-time Hallen integral equation. Transmission line model is based on the frequency and time domain Telegrapher´s equations.. The integro-differential and integral realtionships arising from the wire antenna theory are numerically handled via the frequency and time domain Galerkin-Bubnov scheme of the Indirect Boundary Element Method (GB-1BEM), repectively. The transmission line equations are treated using the Finite Difference Time Domain (FDTD) Method. Some illustrative numerical results obtained via different approaches are presented in the paper.