不同海况下漂浮式风电场大型化响应分析

Large-scale Response Analysis of Floating Wind Farm Under Different Sea Conditions

为探究3种海况下不同漂浮式风电场平台稳定性,建立Barge单平台,2×2、3×3、4×4和5×5阵列风电场平台,基于叶素动量理论、辐射/绕射理论并结合有限元方法,研究了风波载荷作用下其动态响应。结果表明:漂浮式风电场中迎风侧平台响应最剧烈,越远离迎风侧,平台稳定性越好;3种海况下,风电场平台较单平台在纵荡、垂荡及纵摇自由度上动态响应均较小,且随风电场阶数升高,稳定性增加;风电场中迎风侧系泊受力最大且随风电场阶数增加而增大。

In order to explore the stability of different floating wind farm platforms under three sea conditions,the Barge single platform,2×2,3×3,4×4 and 5×5 order floating wind farms were established.Based on the blade element momentum theory,radiation/diffraction theory combined with the finite element method,the dynamic responses of single platform and wind farm platforms under the action of wind-wave load were studied.Results show that the windward side platform of the floating wind farm has the most violent response,and the farther away from the windward side,the better the stability of the platform;under the three sea conditions,the wind farm platform has smaller dynamic response in surge,heave and pitch degrees of freedom than a single platform,and the stability increases as the order of the wind farm increases;the mooring force on the windward side of the wind farm is the largest,and it increases with the increase of the order of the wind farm.