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Minute-scale power forecast of offshore wind turbines using long-range single-Doppler lidar measurements

Theuer, F. and Dooren, M. F. and von Bremen, Lueder and Kühn, M. (2020) Minute-scale power forecast of offshore wind turbines using long-range single-Doppler lidar measurements. Wind Energy Science, 5 (4), pp. 1449-1468. Copernicus Publications. doi: 10.5194/wes-5-1449-2020. ISSN 2366-7443.

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Official URL: https://wes.copernicus.org/articles/5/1449/2020/

Abstract

Decreasing gate closure times on the electricity stock exchange market and the rising share of renewables in today’s energy system causes an increasing demand for very short-term power forecasts. While the potential of dual-Doppler radar data for that purpose was recently shown, the utilization of single-Doppler lidar measurements needs to be explored further to make remote-sensing-based very short-term forecasts more feasible for offshore sites. The aim of this work was to develop a lidar-based forecasting methodology, which addresses a lidar's comparatively low scanning speed. We developed a lidar-based forecast methodology using horizontal plan position indicator (PPI) lidar scans. It comprises a filtering methodology to recover data at far ranges, a wind field reconstruction, a time synchronization to account for time shifts within the lidar scans and a wind speed extrapolation to hub height. Applying the methodology to seven free-flow turbines in the offshore wind farm Global Tech I revealed the model’s ability to outperform the benchmark persistence during unstable stratification, in terms of deterministic as well as probabilistic scores. The performance during stable and neutral situations was significantly lower, which we attribute mainly to errors in the extrapolation of wind speed to hub height.

Item URL in elib:https://elib.dlr.de/139817/
Document Type:Article
Title:Minute-scale power forecast of offshore wind turbines using long-range single-Doppler lidar measurements
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Theuer, F.ForWind-Zentrum für Windenergieforschung, Universität OldenburgUNSPECIFIEDUNSPECIFIED
Dooren, M. F.ForWind, Zentrum für WindenergieforschungUNSPECIFIEDUNSPECIFIED
von Bremen, LuederUNSPECIFIEDhttps://orcid.org/0000-0002-7072-0738UNSPECIFIED
Kühn, M.ForWind, Zentrum für WindenergieforschungUNSPECIFIEDUNSPECIFIED
Date:3 November 2020
Journal or Publication Title:Wind Energy Science
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:5
DOI:10.5194/wes-5-1449-2020
Page Range:pp. 1449-1468
Publisher:Copernicus Publications
ISSN:2366-7443
Status:Published
Keywords:Minute-scale power forecast, Lidar, offshore
HGF - Research field:Energy
HGF - Program:Technology, Innovation and Society
HGF - Program Themes:Renewable Energy and Material Resources for Sustainable Futures - Integrating at Different Scales
DLR - Research area:Energy
DLR - Program:E SY - Energy Systems Analysis
DLR - Research theme (Project):E - Systems Analysis and Technology Assessment (old)
Location: Oldenburg
Institutes and Institutions:Institute of Networked Energy Systems > Energy Systems Analysis
Deposited By: von Bremen, Lüder
Deposited On:18 Dec 2020 13:48
Last Modified:18 Dec 2020 13:48

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