What is it about?
A numerical method for calculating the transient overvoltage across a wind turbine struck by lightning is presented in this research. The resulting overvoltage is determined at different points along the wind turbine body using the proposed numerical method. The lightning strike has been simulated by injecting a current impulse to the tested wind turbine. The equivalent circuits of wind turbine components and the mathematical formulas to evaluate the circuit's parameters are presented. In the laboratory, a high impulse voltage is applied on a small-scale wind turbine to corroborate the proposed method. The calculated overvoltage temporal variations are in good agreement with those measured at different positions along the wind turbine for various grounding resistance values, demonstrating the validity of the proposed method.
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Why is it important?
The obtained results in this research are important for designing WT lightning protection systems
Read the Original
This page is a summary of: Assessment of Wind Turbine Transient Overvoltages when Struck by Lightning: Experimental and Analytical Study, IET Renewable Power Generation, March 2019, the Institution of Engineering and Technology (the IET),
DOI: 10.1049/iet-rpg.2018.5442.
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