席凯,冯榆坤,陈作钢,等. 漂浮式光伏电站漂浮方阵风载荷预报[J]. 水利水运工程学报. doi: 10.12170/20221007001
引用本文: 席凯,冯榆坤,陈作钢,等. 漂浮式光伏电站漂浮方阵风载荷预报[J]. 水利水运工程学报. doi: 10.12170/20221007001
(XI Kai, FENG Yukun, CHEN Zuogang, et al. Numerical method prediction on wind loads of floating photovoltaic power stations[J]. Hydro-Science and Engineering(in Chinese)). doi: 10.12170/20221007001
Citation: (XI Kai, FENG Yukun, CHEN Zuogang, et al. Numerical method prediction on wind loads of floating photovoltaic power stations[J]. Hydro-Science and Engineering(in Chinese)). doi: 10.12170/20221007001

漂浮式光伏电站漂浮方阵风载荷预报

Numerical method prediction on wind loads of floating photovoltaic power stations

  • 摘要: 风载荷是漂浮方阵的主要环境载荷,对于大型漂浮式光伏电站,风致干扰效应显著,目前尚未有成熟的风载荷评估方法。基于多尺度分析提出一种新的数值预报方法,对某大型漂浮式光伏电站漂浮方阵的整体风载荷进行了预报。通过数值模拟对方阵几何模型进行不同程度简化,验证简化模型用于实体方阵风载荷计算的可行性;采用1.45亿和2.36亿网格单元数分别计算最大载荷风向时30行×28列和100行×12列两个方阵的风载荷分布,通过对比分析各组件风载荷随方阵行列的变化规律,预报195行×98列实体方阵的风载荷分布。计算结果显示:光伏板为主要受风构件,承受了80%以上的风载荷;上游组件对下游组件存在明显的干扰效应,迎风第5行会形成载荷次峰;方阵内部风载荷基本趋于稳定。该研究解决了大规模漂浮方阵整体风载荷无法直接计算的问题,为漂浮式光伏电站的抗风设计提供了参考。

     

    Abstract: Wind load is the main environmental loads of the floating array. For large-scale floating PV power stations, the wind-induced interference effect is significant. There are no mature methods to assess the wind load. Based on multi-scale analysis, a new numerical prediction method is proposed to forecast the wind load of a floating photovoltaic power station. The geometric model of the array is simplified through numerical simulations. The feasibility of using the simplified models to calculate wind load of the square array is verified. The load distribution rules of 30 (row)×28(column) array and 100 (row)×12(column) array at the maximum load wind direction are calculated using 145 million and 236 million grid cells, respectively. The changing rules of the environmental load of each component are analyzed with the rows and columns of the array. The prediction of the environmental load of the 195 (row)×98(column) array is given based on the analysis. The results show that the solar panels are the main wind components, which bears more than 80% of the wind load. The upstream components have interference effects on the downstream components and the wind load secondary peak is formed in the fifth row of windward. The internal loads of the array basically tend to be stable. The study solves the problem that the overall wind load of large-scale floating arrays cannot be directly calculated, and provides a reference for the wind resistance design of floating photovoltaic power stations.

     

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