| 海上相邻风电场间的“尾流效应”实例分析 |
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| 作者姓名： | 崔冬林 沙伟 刘树洁 陈秋阳 王尼娜 |
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| 作者单位： | 1.新疆金风科技股份有限公司，新疆 乌鲁木齐 830001 |
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| 基金项目： | 国家自然科学联合基金项目“基于数值模拟的雅砻江流域风能资源多尺度耦合评估方法研究”（U1865102） |
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| 摘 要： | 目的 研究海上相邻风电场间的“尾流效应”对发电损失的影响。 方法 利用海上风电场实际运行SCADA数据结合激光雷达同期实测测风数据，基于不同的风向扇区范围和风电场实际排布进行尾流效应场景分类，开展实际运行相邻风电场间（20D以上间距）的真实尾流电量损失分析工作。 结果 结果表明:对于规则排布的海上大型风电场，基于实际运行SCADA数据，对各机组发电量进行归一化，可以较好地反映海上风能资源分布特征及各机组发电能力的差异；高度集中的单一扇区条件下，处于下风向的相邻风电场受上风向相邻场区的“尾流效应”影响明显，发电产能较自由流降幅明显；相邻风场间随着缓冲带距离的增加，下风向场区机组尾流电量衰减比随之降低，缓冲带需达到一定的距离，对于风速的恢复有明显的作用，发电产能才能够有所提升；本案例不同场景下，缓冲带距离在23D～44D之间，尾流损失电量降幅在27%～4%之间。 结论 基于相邻风电场实际运行数据开展尾流分析可为后续海上大型风电基地规划设计和机组排布优化设计提供指导。
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| 关 键 词： | 相邻风电场 尾流效应 发电量归一化 缓冲带 排布优化 |
| 收稿时间： | 2021-10-13 |
Case Study of "Wake Effect" of Adjacent Offshore Wind Farms |
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| Affiliation: | 1.Xinjiang Goldwind Science & Technology Co., Ltd., Urumqi 830001, Xinjiang, China2.Key Laboratory of Far-Shore Wind Power Technology of Zhejiang Province, Hangzhou, China，3111223.PowerChina Huadong Engineering Corporation Limited, Hangzhou, China，311122 |
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| Abstract: | Introduction The purpose of this paper is to study the influence of real "wake effect" of adjacent offshore wind farms on generation loss. Method The method is established with the wake scene classification based on the actual arrangement of wind farms under different wind direction and the real wake power loss of adjacent wind farms (with a spacing of more than 20D) in operation are analyzed, based on the actual SCADA data of wind turbines in large offshore wind farms and the measured wind data of LIDAR in the same period. Result The results show that: for the large-scale offshore wind farms with regular arrangement, the power generation normalization of the actual SCADA data can better reflect the distribution characteristics of offshore wind energy resources and the difference of power generation capacity; Under the condition of highly centralized wind direction, the adjacent wind farms in the downwind are obviously affected by the "wake effect" of the upwind wind farm; The buffer zones with different distances of adjacent wind farms have an obvious effect on the recovery of wind speed which affected the power generating capacity. The power generating capacity can be improved but if the buffer zone can reach enough distance; In different scenes of this case, the buffer zone distance is between 23D and 44D, and the power loss of wake decreases by 27%~4%. Conclusion This work can provide guidance for the planning of offshore wind power base and the optimization design of large offshore wind frams. |
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