Power and renewables

Wind farm blockage and the consequences of neglecting its impact on energy production

Wind farm blockage

Published on 20 June 2018 in Energies, an open access journal of MDPI

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Paper

Wind farm blockage and the consequences of neglecting its impact on energy production

Wind farm blockage and the consequences of neglecting its impact on energy production

About:

Published on 20 June 2018 in Energies, an open access journal of MDPI

Paper

Wind farm blockage and the consequences of neglecting its impact on energy production

About:

Published on 20 June 2018 in Energies, an open access journal of MDPI

Wind farm blockage and the consequences of neglecting its impact on energy production

Request a copy

Fill out the form below to receive a free copy by email

(optional)
(optional)

Please note that by subscribing to updates, newsletters and other regular email distributions, you must be opted in to receiving informational emails from DNV GL. By submitting this form, you agree to this and accept that you are opted in, and you understand that you can opt-out at any time using the links in the email you receive as well as visiting the email preference centre.

Measurements taken before and after the commissioning of three wind farms reveal that the wind speeds just upstream of each wind farm decrease relative to locations farther away after the turbines are turned on. At a distance of two rotor diameters upstream, the average derived relative slowdown is 3.4%; at seven to ten rotor diameters upstream, the average slowdown is 1.9%.
Reynolds-Averaged Navier-Stokes (RANS) simulations point to wind-farm-scale blockage as the primary cause of these slowdowns. Blockage effects also cause front row turbines to produce less energy than they each would operating in isolation. Wind energy prediction procedures in use today ignore this effect, resulting in an overprediction bias that pervades the entire wind farm.

Paper

Wind farm blockage and the consequences of neglecting its impact on energy production

Wind farm blockage and the consequences of neglecting its impact on energy production

About:

Published on 20 June 2018 in Energies, an open access journal of MDPI