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Transient Behaviour of Grounding System in a Two-Layer Soil Using the Transmission Line Theory

The present work deals with modeling of the transient behavior of grounding systems in the presence of layered media. A simple and efficient Transmission Line (TL) model featuring the use of the Finite Difference Time Domain (FDTD) is proposed. The proposed approach easily accounts for the influence of semi-infinite media (soil or air) and imposes conditions at the interfaces. The TL model is verified through the direct solution of the Maxwell’s equations in the time domain by means of the FDTD method. Some illustrative computational examples addressing some engineering applications stemming from industry are given in the paper.

Transient response; Grounding system; Transmission line theory; Maxwell’s equation’s approach; Two-layer soil; Finite difference time domain (FDTD) method

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