Mesoscale Simulations of a Wind Ramping Event for Wind Energy Prediction

doi:10.2172/1035967

GSTDTAP > 地球科学

DOI	10.2172/1035967
报告编号	LLNL-SR-502791
来源ID	OSTI ID: 1035967
	Mesoscale Simulations of a Wind Ramping Event for Wind Energy Prediction
	Li, D.; Roberts, K.; Kaplan, D.; Seaman, J.
	2011-09-21
出版年	2011
页数	14
语种	英语
国家	美国
领域	地球科学
英文摘要	Ramping events, or rapid changes of wind speed and wind direction over a short period of time, present challenges to power grid operators in regions with significant penetrations of wind energy in the power grid portfolio. Improved predictions of wind power availability require adequate predictions of the timing of ramping events. For the ramping event investigated here, the Weather Research and Forecasting (WRF) model was run at three horizontal resolutions in 'mesoscale' mode: 8100m, 2700m, and 900m. Two Planetary Boundary Layer (PBL) schemes, the Yonsei University (YSU) and Mellor-Yamada-Janjic (MYJ) schemes, were run at each resolution as well. Simulations were not 'tuned' with nuanced choices of vertical resolution or tuning parameters so that these simulations may be considered 'out-of-the-box' tests of a numerical weather prediction code. Simulations are compared with sodar observations during a wind ramping event at a 'West Coast North America' wind farm. Despite differences in the boundary-layer schemes, no significant differences were observed in the abilities of the schemes to capture the timing of the ramping event. As collaborators have identified, the boundary conditions of these simulations probably dominate the physics of the simulations. They suggest that future investigations into characterization of ramping events employ ensembles of simulations, and that the ensembles include variations of boundary conditions. Furthermore, the failure of these simulations to capture not only the timing of the ramping event but the shape of the wind profile during the ramping event (regardless of its timing) indicates that the set-up and execution of such simulations for wind power forecasting requires skill and tuning of the simulations for a specific site.
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来源平台	US Department of Energy (DOE)
引用统计
文献类型	科技报告
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/5386
专题	地球科学
推荐引用方式 GB/T 7714	Li, D.,Roberts, K.,Kaplan, D.,et al. Mesoscale Simulations of a Wind Ramping Event for Wind Energy Prediction,2011.