Tower-foot grounding model for EMT programs based on transmission line theory and Marti's model

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The lightning discharge current is characterized by a high-frequency spectrum extending from DC to about 10 MHz. The calculation of the grounding impedance is one of the most important aspects of designing lightning protection systems. The search for analy ...

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An exact analytical expression for the electric field of the return stroke as excited by a propagating step current source is derived in this paper. This expression could be advantageously used to evaluate the disturbances caused by lightning on overhead l ...

Lightning can induce unwanted currents and voltages on overhead lines that can have a significant impact on power quality and calculating the overvoltages is essential to designing and optimizing lightning protection to minimize nefarious effects. Three complete coupling models that are based on the transmission line approximation have been proposed in the literature. The models have different forcing sources, different equivalent circuit models, and were presented at about 15-year intervals. Despite their

Controlling lightning is a long-time dream of mankind. Along with the rapid evolution of laser technologies, the idea to develop lightning protection based on filamentation of high-power ultrashort-pulse lasers emerged in the 1990s [1]. The goal of the Las ...

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In this paper, we present the characteristics of current, electric fields and modeling approaches of lightning M-component mode of charge transfer. We consider both the classical M-components (occurring after return strokes) and M-component-type ICC (Initi ...

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In this paper, a rigorous and independent validation of two different approaches for calculating the ground-return impedance and admittance of multiconductor underground cable systems using the transmission line theory is carried out. Furthermore, analyses ...

Tower-foot grounding model for EMT programs based on transmission line theory and Marti's model

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