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Energies 2017, 10(9), 1272; doi:10.3390/en10091272

An Electro-Geometric Model for Lightning Shielding of Multiple Wind Turbines

School of Electrical Engineering, Shandong University, Jinan 250061, China
School of Electrical & Electronic Engineering, North China Electric Power University, Beijing 102206, China
Author to whom correspondence should be addressed.
Received: 20 July 2017 / Revised: 18 August 2017 / Accepted: 24 August 2017 / Published: 26 August 2017
(This article belongs to the Special Issue Wind Generators Modelling and Control)
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Wind turbine blades being struck by lightning is one of the most urgent problems facing wind farms. In order to reduce the probability of lightning accidents on wind farms, this paper presents a new electro-geometric model for multiple turbines. In this new model, based on the physical model of lightning leader development, the striking distance range of the blade tip receptor is calculated, taking into account the influence of the charged particles around the blade. Lightning shielding amongst multiple turbines is provided in combination with the traditional electro-geometric model, and a criterion formula is obtained for mutual shielding for multiple turbines. The influence of environmental factors, such as temperature, atmospheric pressure, air humidity, and altitude, on lightning shielding on large-scale wind farms is also analyzed by studying the lightning shielding distance between wind turbines. The calculation shows that the larger the relative air density and the absolute humidity, and the lower the altitude, and the larger the lightning shielding distance between wind turbines. The method proposed in this paper provides a theoretical basis for the lightning protection on wind farms under different environmental conditions. View Full-Text
Keywords: lightning protection; wind farm; electro-geometric model; lightning physics lightning protection; wind farm; electro-geometric model; lightning physics

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Zhang, L.; Wang, G.; Zhang, W.; Ma, Y.; Guo, Z.; Li, Q. An Electro-Geometric Model for Lightning Shielding of Multiple Wind Turbines. Energies 2017, 10, 1272.

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