About the Extension of Wind Turbine Power Curve in the High Wind Region

Author:

Astolfi Davide1,Castellani Francesco1,Lombardi Andrea2,Terzi Ludovico3

Affiliation:

1. Department of Engineering, University of Perugia, Via G. Duranti 93, Perugia 06125, Italy e-mail:

2. Technology Specialist, Renvico srl, Via San Gregorio 34, Milano 20124, Italy e-mail:

3. Technology Manager, Renvico srl, Via San Gregorio 34, Milano 20124, Italy e-mail:

Abstract

The financial sustainability and the profitability of wind farms strongly depend on the efficiency of the conversion of wind kinetic energy. This motivates further research about the improvement of wind turbine power curve. If the site is characterized by a considerable occurrence of very high wind speeds, it can become particularly profitable to update the power curve management. This is commonly done by raising the cut-out velocity and the high wind speed cut-in regulating the hysteresis logic. Doing this, on one side, the wind turbine possibly undergoes strong vibration and loads. On the other side, the energy improvement is almost certain and the point is quantifying precisely its magnitude. In this work, the test case of an onshore wind farm in Italy is studied, featuring 17 2.3 MW wind turbines. Through the analysis of supervisory control and data acquisition (SCADA) data, the energy improvement from the extension of the power curve in the high wind speed region is simulated and measured. This could be useful for wind farm owners evaluating the realistic profitability of the installation of the power curve upgrade on their wind turbines. Furthermore, the present work is useful for the analysis of wind turbine behavior under extremely stressing load conditions.

Publisher

ASME International

Subject

Energy Engineering and Power Technology,Renewable Energy, Sustainability and the Environment

Reference12 articles.

1. Optimization of Wind Turbine Energy and Power Factor With an Evolutionary Computation Algorithm;Energy,2010

2. A Kernel Plus Method for Quantifying Wind Turbine Performance Upgrades;Wind Energy,2015

3. Horváth, L., Panza, T., and Karadža, N., 2007, “The Influence of High Wind Hysteresis Effect on Wind Turbine Power Production at Bura-Dominated Site,” European Wind Energy Conference Exhibition (EWEC 2007), Milan, Italy, May 7–10.

4. Markou, H., and Larsen, T. J., 2009, “Control Strategies for Operation of Pitch Regulated Turbines Above Cut-Out Wind Speeds,” European Wind Energy Conference and Exhibition (EWEC 2009), Marseille, France, Mar. 16–19.

5. Bossanyi, E., and King, J., 2012, “Improving Wind Farm Output Predictability by Means of a Soft Cut-Out Strategy,” European Wind Energy Conference and Exhibition (EWEC 2012), Copenhagen, Denmark, Apr. 16–19.

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