Alternative Calibration of Cup Anemometers: A Way to Reduce the Uncertainty of Wind Power Density Estimation

Sensors

卷:19

Rubén Dorado-Vicente¹  Eloísa Torres-Jiménez¹  Gustavo Medina-Sánchez²  Francisca Guerrero-Villar² 

[1] Universidad de Jaén, 23071 Jaén, Spain;

[2] Department of Mechanical and Mining Engineering;

关键词: wind speed sensor;    cup anemometer;    quadratic regression uncertainty;    wind dynamic pressure;    wind power density;    wind tunnel;    anemometer calibration;    pitot tube;   

DOI  :  10.3390/s19092029

来源: DOAJ

【 摘 要 】

This study presents a procedure to reduce the uncertainty of wind power density estimations, which is useful to improve the energy production predictions of wind farms. Power density is usually determined from the wind speed measured by a cup anemometer and the air density value (conventional procedure). An alternative procedure based on wind speed and dynamic pressure estimations provided by a cup anemometer is proposed. The dynamic pressure is obtained by means of a calibration curve that relates the anemometer rotation frequency and the dynamic pressure measured by a Pitot tube. The quadratic regression, used to define the calibration curve, and its uncertainty are both detailed. A comparison between the alternative procedure and the conventional one points out the advantage of the proposed alternative since results show a high reduction of the indirect measurement uncertainty of wind power density.

【 授权许可】

Unknown