Statistical Analysis of Lightning Flashes over Wind Parks in Greece

Vasilios P. Androvitsaneas, Katerina D. Damianaki, Eleni P. Nicolopoulou and Ioannis F. Gonos
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Vasilios P. Androvitsaneas: High Voltage and Electrical Measurements Laboratory, School of Electrical and Computer Engineering, National Technical University of Athens, 157 80 Athens, Greece
Katerina D. Damianaki: High Voltage and Electrical Measurements Laboratory, School of Electrical and Computer Engineering, National Technical University of Athens, 157 80 Athens, Greece
Eleni P. Nicolopoulou: High Voltage and Electrical Measurements Laboratory, School of Electrical and Computer Engineering, National Technical University of Athens, 157 80 Athens, Greece
Ioannis F. Gonos: High Voltage and Electrical Measurements Laboratory, School of Electrical and Computer Engineering, National Technical University of Athens, 157 80 Athens, Greece

Energies, 2021, vol. 14, issue 19, 1-22

Abstract: Currently, lightning phenomenon, mechanisms, and impacts on lives and infrastructures have been satisfactorily decoded and studied. Sound knowledge of lightning parameters is available in international literature. Yet, there are few studies referring to lightning statistics such as the number of flashes over an area, current amplitude distribution, etc., except for official documentation from national weather services, perhaps because of the stochastic nature of lightning. This work presents full recorded data for lightning flashes over wind farms distributed at the Hellenic territory. The data come from real time measurements at wind farm stations from 2011 to 2020 and concern number of CG flashes and lightning current amplitude. They are statistically processed and analyzed and contain useful information regarding the lightning characteristics of various geographic regions all over the country. Furthermore, the study displays data from field measurements of ground resistance at wind turbines and highlights techniques of designing and enhancing grounding systems of wind turbines for given lightning protection level (LPL). The present study, therefore, provides stakeholders with useful data and noteworthy conclusions about lightning occurrence and characteristics in Greece in order to make informed decisions on the various project stages, such as selection of the wind farm site, proper and in-depth risk assessment, and investment in safety measures for personnel and equipment.

Keywords: lightning; lightning current; probability distribution; wind turbine generators; earthing system; ground resistance (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
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