Potential use of space-based lightning detection in electric power systems

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Montanya, J. ; Lopez, J. A. ; Velde, O. van der ; Sola, G. ; Romero, D. ; Morales, C. ; Visacro, S. ; Saba, M. M. F. ; Goodman, S. J. ; Williams, E. ; Peterson, M. ; Pineda, N. ; Arcanjo, M. ; Aranguren, D.

• Tipo de documento: Artigo Científico
• Fonte: Electric Power Systems Research; v. 213, p. 11-pg., 2022-09-06.

Resumo

Information about lightning activity and its parameters is necessary to design and evaluate the lightning pro-tection of an electrical power system. This information can be obtained from ground-based lightning detection networks that provide information on cloud-to-ground lightning strikes with a location accuracy of few hundred meters. Recently, the first satellite-based lightning optical detectors are operating continuously from geosta-tionary orbits. These imagers observe the luminosity escaping from clouds to detect and locate total lightning activity with a spatial accuracy of several kilometers. This allows delineating the initiation and propagation (sometimes over tens to hundreds of kilometers before striking the ground) not observable by the ground-based networks. In this paper, we explore the use of this new technology for lightning protection in power systems. We focus on tall objects such as wind turbines and overhead transmission lines. We show how the optical detections allow identifying lightning flashes that likely produce continuing currents. This provides additional information for the identification of dangerous events and also can be used to estimate the number of upward-flashes from tall objects triggered by a nearby flash. The analysis of a transmission line shows the concentration of faults in the areas of high total lightning flash density. We found regional variations of the optical energy of the flashes along the line. (AU)

• Processo FAPESP: 12/15375-7 - Características dos raios ascendentes no Brasil
• Beneficiário: Marcelo Magalhães Fares Saba
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 13/05784-0 - Caracterização dos raios ascendentes a partir de observações de câmeras de alta resolução temporal e medidas de campo elétrico
• Beneficiário: Carina Schumann
• Modalidade de apoio: Bolsas no Brasil - Doutorado