Analysis of calibration results from cup and propeller anemometers. Influence on wind turbine Annual Energy Production (AEP) calculations
Santiago Pindado,Enrique Vega,Alejandro Martínez,Encarnación Meseguer,Sebastián Franchini,Imanol Pérez Sarasola +5 more
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TLDR
In this article, the calibration coefficients of several models of cup and propeller anemometers were analyzed based on a series of laboratory calibrations between January 2003 and August 2007, and the results revealed that the slope of the calibration curve, if based on the rotation frequency and not the anemometer's output frequency, seemed to depend on the cup center rotation radius.Abstract:
The calibration coefficients of several models of cup and propeller anemometers were analysed. The analysis was based on a series of laboratory calibrations between January 2003 and August 2007. Mean and standard deviation values of calibration coefficients from the anemometers studied were included. Two calibration procedures were used and compared. In the first, recommended by the Measuring Network of Wind Energy Institutes (MEASNET), 13 measurement points were taken over a wind speed range of 4 to 16 m s−1. In the second procedure, 9 measurement points were taken over a wider speed range of 4 to 23 m s−1. Results indicated no significant differences between the two calibration procedures applied to the same anemometer in terms of measured wind speed and wind turbines' Annual Energy Production (AEP). The influence of the cup anemometers' design on the calibration coefficients was also analysed. The results revealed that the slope of the calibration curve, if based on the rotation frequency and not the anemometer's output frequency, seemed to depend on the cup center rotation radius. Copyright © 2010 John Wiley & Sons, Ltd.read more
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The Cup Anemometer, a Fundamental Meteorological Instrument for the Wind Energy Industry. Research at the IDR/UPM Institute
TL;DR: The analysis of theAnemometer's output signal as a way of monitoring the anemometer status is revealed as a promising procedure for detecting anomalies.
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State of the Art in the Optimisation of Wind Turbine Performance Using CFD
Alireza Shourangiz-Haghighi,Mohammad Amin Haghnegahdar,Lin Wang,Marco Mussetta,Athanasios Kolios,Athanasios Kolios,Martin Lander +6 more
TL;DR: A comprehensive review of the state of the art in the key aspects on the performance optimisation of wind turbines using Computational Fluid Dynamics (CFD), which has attracted enormous interest in the development of next-generation wind turbines in recent years is presented.
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MIDAS: A Benchmarking Multi-Criteria Method for the Identification of Defective Anemometers in Wind Farms
TL;DR: A novel multi-criteria methodology for the identification of defective anemometers is shown in this paper with a benchmarking approach, called MIDAS: multi-technique identification of defects in a wind farm with 10 anemometer located in Northern Europe in a terrain with forests and woodlands.
Journal ArticleDOI
On Cup Anemometer Rotor Aerodynamics
TL;DR: The analytical model of Kondo et al. was proved to be accurate if it is based on precise data related to the aerodynamic behavior of a rotor's cup and showed a linear dependency of both calibration constants, the slope and the offset, on the cups' center rotation radius.
Journal ArticleDOI
On the harmonic analysis of cup anemometer rotation speed: A principle to monitor performance and maintenance status of rotating meteorological sensors
TL;DR: In this paper, the calibration results of one anemometer equipped with several rotors, varying their size, were analyzed and a 3-cup analytical model was correlated to the data resulting from the wind tunnel measurements.
References
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Journal ArticleDOI
Cup Anemometer Behavior in Turbulent Environments
TL;DR: In this paper, the behavior of the cup anemometer rotor in turbulent atmospheric flow is discussed in terms of a general equation of motion, which equates the rate of change s of the rotation rate s of a rotor to a forcing F(s, h, w), which is proportional to the torque and a function of s and of the total horizontal and the vertical wind velocity components, h and w, respectively.
Journal ArticleDOI
A theoretical study of cup and vane anemometers
TL;DR: In this paper, the theoretical response of anemometers to steady and varying flows is derived analytically and by using an analogue computer, and it is found that the mean indicated windspeed can be overestimated by as much as 20 per cent and that the form of fluctuations is distorted and their amplitude considerably reduced.
ACCUWIND - Methods for classification of cup anemometers
TL;DR: In this paper, a new alternative method for torque coefficient measurements at inclined flow has been developed, which have then been applied and compared to the existing methods developed in the CLASSCUP project and earlier.
Theoretical study of cup and vane anemometers
TL;DR: In this article, the theoretical response of cup and vane anemometers to steady and varying flows is derived analytically and by using an analogue computer, and it is found that the mean indicated windspeed can be overestimated by as much as 20 per cent and that the form of fluctuations is distorted and their amplitude considerably reduced.