波浪荷载作用下海上新型潜式浮式风力机运动特性研究  

STUDY ON MOTION CHARACTERISTICS OF A NEW TYPE SUBMERGED FLOATING WIND TURBINE UNDER WAVE LOAD

作　　者：乐丛欢[1,2,3] 李彦娥 丁红岩[1,2] 杨家溢 Le Conghuan;Li Yan’e;Ding Hongyan;Yang Jiayi(State Key Laboratory of Hydraulic Engineering Simulation and Safety,Tianjin University,Tianjin 300072,China;School of Civil Engineering,Tianjin University,Tianjin 300072,China;State Key Laboratory of Coastal and Offshore Engineering,Dalian University of Technology,Dalian 116023,China)

机构地区：[1]天津大学水利工程仿真与安全国家重点实验室,天津300072 [2]天津大学建筑工程学院,天津300072 [3]大连理工大学海岸和近海工程国家重点实验室,大连116023

出　　处：《太阳能学报》2020年第2期78-84,共7页Acta Energiae Solaris Sinica

基　　金：国家自然科学基金(51679163);国家创新方法工作专项(2016IM030100);天津市自然科学基金(18JCYBJC22800);大连理工大学海岸及近海工程国家重点实验室开放课题(LP1709)。

摘　　要：以适用于中等水深(50~200 m)的新型潜式浮式风力机为研究对象,该风力机基础综合Spar式、半潜式及张力腿(TLP)3类浮式风力机基础的优点,运行时基础主体淹没在水下,具有较小的水线面(如同Spar平台),受波浪影响较小;平台通过张紧式系泊线与海床相连(如同TLP平台),具有良好的垂荡和摇摆运动特性;拖航状态下,浮式平台处于半潜状态,水线面面积大(如同半潜式平台),具有良好的浮稳性。通过分析不同波况下的潜式浮式风力机耦合动力响应得到潜式浮式基础的横荡、纵荡、垂荡及纵摇运动响应,以及发电功率、叶片根部弯矩、塔筒顶部和底部弯矩、锚链张力时程曲线。研究结果表明:波浪对于结构的纵摇运动的影响最为明显,对发电功率、叶片根部弯矩和塔筒顶部弯矩影响较小,对塔筒底部弯矩和系泊线张力影响较大。A new type submerged floating offshore wind turbine(SFOWT)for intermediate water depth(50-200 m)is taken as the research object. The SFOWT integrates the advantages of the Spar,semi-submersible and tension leg platform(TLP)three types of floating wind turbines,which is submerged with a relatively small water line in the operation phase,like a Spar,and less affected by the wave;the floating platform is connected to the seabed by taut mooring lines,like a TLP,which has good heave and swing motion performance. The SFOWT is in semi-submersible state with a large water line area and good stablity in transportation phase,like a semi-submersible platform. The coupled dynamic response of the SFOWT are investigated under different wave conditons,and the motion response of sway,surge,heave and pitch of the SFOWT are obtained. Meanwhile,the time series of electrical generator power,out-of-plane bending moments at the blade root,side-to-side bending moments at the tower top,fore-aft bending moments at the tower base and mooring line tension of the SFOWT are further analyzed. Research results show that the wave has the most obvious influence on the pitch motion of the SFOWT,and it has less effect on power generation,bending moment at blade root and tower top. In addition,the wave has great influence on the bending moment of the tower base and mooring line tension.

关 键 词：浮式风力机 频域分析 动力响应 耦合运动 

分 类 号：P751[交通运输工程—港口、海岸及近海工程]