engleski

Time Domain Analysis of the Horizontal Grounding Electrode: Antenna theory approach versus transmission line approximation

The paper deals with a transient analysis of a horizontal grounding wire immersed in a lossy half-space by means of a rigorous antenna theory (AT) and an approximate transmission line (TL) approach, respectively. The AT formulation is based on the corresponding space-time Pocklington integro-differential approach. The presence of the earth-air interface is taken into account via the simplified reflection coefficient arising from the Modified Image Theory (MIT). The TL approach is based on the set of space-time telegrapher’s equations. The space–time Pocklington integro-differential equation has been solved analytically while the telegrapher’s equations have been numerically solved via the Finite Difference Time Domain (FDTD) method. The results via different approaches agree rather satisfactorily.

transient response; horizontal grounding electrode; antenna theory; analytical approach; transmission lime method; FDTD

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