漂浮式光伏电站漂浮方阵的锚泊计算研究

Numerical research on a mooring system of floating PV power station

漂浮式光伏电站通常为漂浮于开阔水面上的矩形方阵。为了保证漂浮式光伏电站的安全性,提高其发电效率,文章对其锚泊问题进行了研究。文章以170 m×170 m漂浮方阵为研究对象。为了解决大型多浮体锚泊力无法直接求解的问题,提出了采用计算流体力学(CFD)方法对漂浮方阵的风载荷、流载荷进行计算。此外,基于刚体化光伏电站漂浮方阵的方法,采用势流理论计算了漂浮方阵的波浪载荷,近似求解了该光伏方阵的锚泊力。最后,基于各个环境载荷,建立锚泊计算简化模型,对漂浮方阵锚泊系统的张力和偏移进行了评估。研究成果为漂浮式光伏电站漂浮方阵锚泊问题的研究提供参考。

Floating PV power stations are usually rectangular arrays floating on the open water surface.For the sake of safety and power generation efficiency,the mooring problem should be studied.In order to solve the problem that the mooring force of a large multi-floating body cannot be solved directly,a new method is proposed:predicting the wind and current loads on a 170 m×170 m floating square array by computational fluid dynamics(CFD);calculating the wave load of square array by potential flow theory through the method of rigidifying the square array,then approximately estimating the mooring line tension.In this study,a simplified mooring model is established to evaluate the tension and offset of the floating array mooring system.The research process and ideas of large floating array mooring calculation are put forward,which provides a reference for the study of mooring problems of floating PV plants.