Re-assessment of energy production


Re-assessment of energy production

Site: medium size wind farm in Northern Germany; the real energy production is much lower than calculated in the original assessment report

Procedure: profound analysis of SCADA data


  • reduction of the long term mean wind resource, albeit its contribution to the overall result is small compared to the following aspects
  • thrust coefficients too low
  • power curves are not reached in the wake of neighbouring turbines
  • strong deflection of the flow due to the specific wind farm layout in terms of very low distances between wind turbines


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