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Tensions Induites par une agression foudre dans les câbles de contrôle-mesure des centres de production d'énergie

Abstract : When lightning strikes a building in a Power Generation Center, dangerous currents propagates through all the components connected to the building structure: The walls, the grounding grid, and the cables leaving the building. It is the interest of this work to study the transient voltages at the terminations of these cables external to the building.Particularly, the Instrumentation and Measure (IM) cables, since they are connected to electronic equipment susceptible of damage or malfunctioning due to lightning ElectroMagnetic perturbations. A full wave approach based on the numerical solution of Maxwell’s equations through the FDTD algorithm is adopted. Notably, the formalism of Holland and Simpson is used to model all the structures composed of thin wires: the building steel structure, the grounding copper grid, the concrete cable ducts and the coaxial IM cables. A validation of the model developed for each component is presented. A sensitivity analysis is performed in order to the determine the main parameters that configure the problem. Also, the Design of Experiments (DoE) technique is used to generate a meta-model that predicts the peak induced voltages in the cable terminations, as a function of the main parameters that configure the industrial site. This represents an accurate, and computationally efficient tool to assess lightning performance of IM cables.
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Submitted on : Monday, January 23, 2017 - 4:37:07 PM
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  • HAL Id : tel-01444146, version 1

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Luis Gerardo Diaz Pulgar. Tensions Induites par une agression foudre dans les câbles de contrôle-mesure des centres de production d'énergie. Energie électrique. Université de Limoges, 2016. Français. ⟨NNT : 2016LIMO0093⟩. ⟨tel-01444146⟩

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