Estimation of annual energy production using dynamic wake meandering in combination with ambient CFD solutions

The Science of Making Torque from Wind

Hahn, S.^1 ; Machefaux, E.^1 ; Hristov, Y.V.^1 ; Albano, M.^1 ; Threadgill, R.^1

Vestas Wind Systems A/S, Hedeager 42, Aarhus N

8200, Denmark^1

关键词: Annual energy productions;    Hierarchical merging;    Linear superpositions;    Neutral conditions;    Predictive performance;    Reynolds-Averaged Navier-Stokes;    Standard procedures;    Superposition technique;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/753/3/032043/pdf
DOI  :  10.1088/1742-6596/753/3/032043

来源: IOP

【 摘 要 】

In the present study, combination of the standalone dynamic wake meandering (DWM) model with Reynolds-averaged Navier-Stokes (RANS) CFD solutions for ambient ABL flows is introduced, and its predictive performance for annual energy production (AEP) is evaluated against Vestas' SCADA data for six operating wind farms over semi-complex terrains under neutral conditions. The performances of conventional linear and quadratic wake superposition techniques are also compared, together with the in-house implemention of successive hierarchical merging approaches. As compared to our standard procedure based on the Jensen model in WindPRO, the overall results are promising, leading to a significant improvement in AEP accuracy for four of the six sites. While the conventional linear superposition shows the best performance for the improved four sites, the hierarchical square superposition shows the least deteriorated result for the other two sites.