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https://doi.org/10.5194/wes-2018-8
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Research articles 12 Feb 2018

Research articles | 12 Feb 2018

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This discussion paper is a preprint. A revision of the manuscript is under review for the journal Wind Energy Science (WES).

Wind farm power production assessment: a comparative analysis of two actuator disc methods and two analytical wake models

Nikolaos Simisiroglou1,2, Heracles Polatidis2, and Stefan Ivanell2 Nikolaos Simisiroglou et al.
  • 1WindSim AS, Fjordgaten 15, 3125 Tønsberg , Norway
  • 2Uppsala University, Wind Energy Section, Campus Gotland, 621 67 Visby, Sweden

Abstract. The aim of the present study is to perform a comparative analysis of two actuator disc methods (ACD) and two analytical wake models for wind farm power production assessment. To do so wind turbine power production data from the Lillgrund offshore wind farm in Sweden is used. The measured power production for individual wind turbines is compared with results from simulations, done in the WindSim software, using two ACD methods (old and new) and two analytical wake models widely used within the wind industry (Jensen and Larsen wake models). It was found that the new ACD method and the Larsen model outperform the other method and model in most cases. Furthermore, results from the new ACD method show a clear improvement in the estimated power production in comparison to the old ACD method. The Jensen method seems to overestimate the power deficit for all cases. The new ACD method, despite it's simplicity, is capable of capturing the power production within the given error margin although it tends to underestimate the power deficit.

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Nikolaos Simisiroglou et al.
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The aim of the present study is to perform a comparative analysis of two actuator disc methods (ACD) and two analytical wake models for wind farm power production assessment. To do so wind turbine power production data from the Lillgrund offshore wind farm in Sweden is used. The measured power production for individual wind turbines is compared with results from simulations, done in the WindSim software.
The aim of the present study is to perform a comparative analysis of two actuator disc methods...
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