| DOI: | 10.2172/1035967
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| 报告号: | LLNL-SR-502791
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| 报告题名: | Mesoscale Simulations of a Wind Ramping Event for Wind Energy Prediction |
| 作者: | Li, D.; Roberts, K.; Kaplan, D.; Seaman, J.
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| 出版年: | 2011
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| 发表日期: | 2011-09-21
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| 总页数: | 14
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| 国家: | 美国
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| 语种: | 英语
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| 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. |
| URL: | http://www.osti.gov/scitech/servlets/purl/1035967
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| Citation statistics: |
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| 资源类型: | 研究报告
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/40096
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| Appears in Collections: | 过去全球变化的重建
影响、适应和脆弱性
科学计划与规划
气候变化与战略
全球变化的国际研究计划
气候减缓与适应
气候变化事实与影响
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| 1035967.pdf（1713KB） | 研究报告 | -- | 开放获取 | | View
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| Recommended Citation: | |
Li, D.,Roberts, K.,Kaplan, D.,et al. Mesoscale Simulations of a Wind Ramping Event for Wind Energy Prediction. 2011-01-01.
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