Atmospheric turbulence affects wind turbine nacelle transfer functions
Abstract
Despite their potential as a valuable source of individual turbine power performance and turbine array energy production optimization information, nacelle-mounted anemometers have often been neglected because complex flows around the blades and nacelle interfere with their measurements. This work quantitatively explores the accuracy of and potential corrections to nacelle anemometer measurements to determine the degree to which they may be useful when corrected for these complex flows, particularly for calculating annual energy production (AEP) in the absence of other meteorological data. Using upwind meteorological tower measurements along with nacelle-based measurements from a General Electric (GE) 1.5sle model, we calculate empirical nacelle transfer functions (NTFs) and explore how they are impacted by different atmospheric and turbulence parameters. This work provides guidelines for the use of NTFs for deriving useful wind measurements from nacelle-mounted anemometers. Corrections to the nacelle anemometer wind speed measurements can be made with NTFs and used to calculate an AEP that comes within 1 % of an AEP calculated with upwind measurements. We also calculate unique NTFs for different atmospheric conditions defined by temperature stratification as well as turbulence intensity, turbulence kinetic energy, and wind shear. During periods of low stability as defined by the Bulk Richardson number (RB),more »
- Authors:
- Publication Date:
- Research Org.:
- National Renewable Energy Laboratory (NREL), Golden, CO (United States)
- Sponsoring Org.:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE), Wind and Water Technologies Office (EE-4W)
- OSTI Identifier:
- 1361122
- Alternate Identifier(s):
- OSTI ID: 1338900
- Report Number(s):
- NREL/JA-5D00-67362
Journal ID: ISSN 2366-7451
- Grant/Contract Number:
- AC36-08GO28308
- Resource Type:
- Published Article
- Journal Name:
- Wind Energy Science (Online)
- Additional Journal Information:
- Journal Name: Wind Energy Science (Online) Journal Volume: 2 Journal Issue: 1; Journal ID: ISSN 2366-7451
- Publisher:
- European Wind Energy Association - Copernicus
- Country of Publication:
- Germany
- Language:
- English
- Subject:
- 17 WIND ENERGY; nacelle anemometry; nacelle transfer function; atmospheric stability; turbulence
Citation Formats
St. Martin, Clara M., Lundquist, Julie K., Clifton, Andrew, Poulos, Gregory S., and Schreck, Scott J. Atmospheric turbulence affects wind turbine nacelle transfer functions. Germany: N. p., 2017.
Web. doi:10.5194/wes-2-295-2017.
St. Martin, Clara M., Lundquist, Julie K., Clifton, Andrew, Poulos, Gregory S., & Schreck, Scott J. Atmospheric turbulence affects wind turbine nacelle transfer functions. Germany. https://doi.org/10.5194/wes-2-295-2017
St. Martin, Clara M., Lundquist, Julie K., Clifton, Andrew, Poulos, Gregory S., and Schreck, Scott J. Fri .
"Atmospheric turbulence affects wind turbine nacelle transfer functions". Germany. https://doi.org/10.5194/wes-2-295-2017.
@article{osti_1361122,
title = {Atmospheric turbulence affects wind turbine nacelle transfer functions},
author = {St. Martin, Clara M. and Lundquist, Julie K. and Clifton, Andrew and Poulos, Gregory S. and Schreck, Scott J.},
abstractNote = {Despite their potential as a valuable source of individual turbine power performance and turbine array energy production optimization information, nacelle-mounted anemometers have often been neglected because complex flows around the blades and nacelle interfere with their measurements. This work quantitatively explores the accuracy of and potential corrections to nacelle anemometer measurements to determine the degree to which they may be useful when corrected for these complex flows, particularly for calculating annual energy production (AEP) in the absence of other meteorological data. Using upwind meteorological tower measurements along with nacelle-based measurements from a General Electric (GE) 1.5sle model, we calculate empirical nacelle transfer functions (NTFs) and explore how they are impacted by different atmospheric and turbulence parameters. This work provides guidelines for the use of NTFs for deriving useful wind measurements from nacelle-mounted anemometers. Corrections to the nacelle anemometer wind speed measurements can be made with NTFs and used to calculate an AEP that comes within 1 % of an AEP calculated with upwind measurements. We also calculate unique NTFs for different atmospheric conditions defined by temperature stratification as well as turbulence intensity, turbulence kinetic energy, and wind shear. During periods of low stability as defined by the Bulk Richardson number (RB), the nacelle-mounted anemometer underestimates the upwind wind speed more than during periods of high stability at some wind speed bins below rated speed, leading to a more steep NTF during periods of low stability. Similarly, during periods of high turbulence, the nacelle-mounted anemometer underestimates the upwind wind speed more than during periods of low turbulence at most wind bins between cut-in and rated wind speed. Based on these results, we suggest different NTFs be calculated for different regimes of atmospheric stability and turbulence for power performance validation purposes.},
doi = {10.5194/wes-2-295-2017},
journal = {Wind Energy Science (Online)},
number = 1,
volume = 2,
place = {Germany},
year = {Fri Jun 02 00:00:00 EDT 2017},
month = {Fri Jun 02 00:00:00 EDT 2017}
}
https://doi.org/10.5194/wes-2-295-2017
Works referenced in this record:
An experimental and numerical study of the vortex structure in the wake of a wind turbine
journal, January 2000
- Whale, J.; Anderson, C. G.; Bareiss, R.
- Journal of Wind Engineering and Industrial Aerodynamics, Vol. 84, Issue 1
Quantifying Wind Turbine Wake Characteristics from Scanning Remote Sensor Data
journal, April 2014
- Aitken, Matthew L.; Banta, Robert M.; Pichugina, Yelena L.
- Journal of Atmospheric and Oceanic Technology, Vol. 31, Issue 4
Wind plant system engineering through optimization of layout and yaw control: Wind plant system engineering
journal, March 2015
- Fleming, Paul A.; Ning, Andrew; Gebraad, Pieter M. O.
- Wind Energy, Vol. 19, Issue 2
Atmospheric stability affects wind turbine power collection
journal, January 2012
- Wharton, Sonia; Lundquist, Julie K.
- Environmental Research Letters, Vol. 7, Issue 1
Conically scanning lidar error in complex terrain [Conically scanning lidar error in complex terrain]
journal, May 2009
- Bingöl, Ferhat; Mann, Jakob; Foussekis, Dimitri
- Meteorologische Zeitschrift, Vol. 18, Issue 2
On the Rotor Effects upon Nacelle Anemometry for Wind Turbines
journal, December 2004
- Smaïli, Arezki; Masson, Christian
- Wind Engineering, Vol. 28, Issue 6
A numerical investigation of nacelle anemometry for a HAWT using actuator disc and line models in CFX
journal, December 2012
- Keck, Rolf-Erik
- Renewable Energy, Vol. 48
The modification of wind turbine performance by statistically distinct atmospheric regimes
journal, September 2012
- Vanderwende, B. J.; Lundquist, J. K.
- Environmental Research Letters, Vol. 7, Issue 3
Turbulent fluxes, stability and shear in the offshore environment: Mesoscale modelling and field observations at FINO1
journal, November 2012
- Muñoz-Esparza, D.; Cañadillas, B.; Neumann, T.
- Journal of Renewable and Sustainable Energy, Vol. 4, Issue 6
The Effect of Wind-Turbine Wakes on Summertime US Midwest Atmospheric Wind Profiles as Observed with Ground-Based Doppler Lidar
journal, July 2013
- Rhodes, Michael E.; Lundquist, Julie K.
- Boundary-Layer Meteorology, Vol. 149, Issue 1
Characterization of the unsteady flow in the nacelle region of a modern wind turbine
journal, March 2011
- Zahle, Frederik; Sørensen, Niels N.
- Wind Energy, Vol. 14, Issue 2
Data Clustering Reveals Climate Impacts on Local Wind Phenomena
journal, August 2012
- Clifton, Andrew; Lundquist, Julie K.
- Journal of Applied Meteorology and Climatology, Vol. 51, Issue 8
Probabilistic Weather Prediction with an Analog Ensemble
journal, October 2013
- Delle Monache, Luca; Eckel, F. Anthony; Rife, Daran L.
- Monthly Weather Review, Vol. 141, Issue 10
Turbine Inflow Characterization at the National Wind Technology Center
journal, May 2013
- Clifton, Andrew; Schreck, Scott; Scott, George
- Journal of Solar Energy Engineering, Vol. 135, Issue 3
Wind turbine power production and annual energy production depend on atmospheric stability and turbulence
journal, January 2016
- St. Martin, Clara M.; Lundquist, Julie K.; Clifton, Andrew
- Wind Energy Science, Vol. 1, Issue 2
Wind Shear and Uncertainties in Power Curve Measurement and Wind Resources
journal, October 2009
- Antoniou, Ioannis; Pedersen, Søren Markilde; Enevoldsen, Peder Bay
- Wind Engineering, Vol. 33, Issue 5
Atmospheric Impacts on Power Curves of Multi-Megawatt Offshore Wind Turbines
journal, December 2014
- Dörenkämper, M.; Tambke, J.; Steinfeld, G.
- Journal of Physics: Conference Series, Vol. 555
Influence of Atmospheric Stability on Wind Turbine Power Performance Curves
journal, February 2006
- Sumner, Jonathon; Masson, Christian
- Journal of Solar Energy Engineering, Vol. 128, Issue 4
Quantifying error of lidar and sodar Doppler beam swinging measurements of wind turbine wakes using computational fluid dynamics
journal, January 2015
- Lundquist, J. K.; Churchfield, M. J.; Lee, S.
- Atmospheric Measurement Techniques, Vol. 8, Issue 2
An Introduction to Boundary Layer Meteorology
book, January 1988
- Stull, Roland B.
- Atmospheric and Oceanographic Sciences Library