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Experimental study on wake interaction and power production in an onshore wind farm under single- and double-wake conditions

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Abstract

This study aimed to evaluate the interference due to wind turbine wake in an operating wind farm and quantitatively analyze wake influence on wind turbine power production under single- and double-wake conditions. Variations in wind conditions due to wake effects were assessed by comparing the wind data from two met masts located inside and outside the wind farm. From the data collected by supervisory control and data acquisition systems of 1.5-MW wind turbines, the velocity and power production deficits were analyzed under the single- and double-wake conditions. Then, the power curves of the downstream and upstream wind turbines were compared. The results confirmed that the wind speed reduced by a single wake began to recover at a downstream distance of approximately 5 times the rotor diameter. Whereas the strength of single wake effects varied with distance, the double wake effects were similar regardless of distance.

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Acknowledgments

This research was supported by a National Research Foundation of Korea (NRF) grant funded by the Ministry of Education (No. 2020R1A6A3A01100095) and the Ministry of Science and ICT (No. 2021R1A2C2009315).

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Authors and Affiliations

  1. Green Energy and Sustainability, Industry Service, TÜV SÜD Korea, 10 Gukjegeumyung-ro, Yeongdeungpo-gu, Seoul, 07326, Korea

    Dongheon Shin

  2. Faculty of Wind Energy Engineering, Graduate School, Jeju National University, 102 Jejudaehakro, Jeju, 63243, Korea

    Kyungnam Ko

Authors
  1. Dongheon Shin
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  2. Kyungnam Ko
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Correspondence to Kyungnam Ko.

Additional information

Dongheon Shin is an Engineer of the Green Energy and Sustainability, Industry Service, TÜV SÜD Korea, Korea. He holds a Bachelor’s degree (2013) in Earth and Marine Science, a Master’s degree (2015) and Doctor’s degree (2019) from the Faculty of Wind Energy Engineering, Graduate School, Jeju National University. He has studied the wind farm design and wind turbine power performance testing using LiDAR systems.

Kyungnam Ko is a Professor of the Faculty of Wind Energy Engineering, Graduate School, Jeju University, Korea. He earned a Bachelor’s degree in Marine Engineering in 1993 and a Master’s degree in Mechanical Engineering in 1995 at Jeju University. He then received his Ph.D. degree in Mechanical System Engineering in 2002 from Gunma University, Japan. He has been studying wind resource assessment, wind farm design, and economic feasibility analysis. Furthermore, his research interests include the analysis of the wake behind wind turbines and computational fluid dynamics.

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Shin, D., Ko, K. Experimental study on wake interaction and power production in an onshore wind farm under single- and double-wake conditions. J Mech Sci Technol 36, 2949–2956 (2022). https://doi.org/10.1007/s12206-022-0527-6

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  • DOI: https://doi.org/10.1007/s12206-022-0527-6

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