极端台风下停机姿态对海上风力机叶片气动载荷影响  

EFFECT OF PARKING ATTITUDE ON AERODYNAMIC LOADS OF OFFSHORE WIND TURBINE BLADES DURING EXTREME TYPHOON

作　　者：任年鑫 徐世铮[1,2] 马哲 李炜[4] Ren Nianxin;Xu Shizheng;Ma Zhe;Li Wei(Deepwater Engineering Research Center,Dalian University of Technology,Dalian 116024,China;State Key Laboratory of Coast and Offshore Engineering,Dalian University of Technology,Dalian 116024,China;Beijing’s Key Laboratory of Structural Wind Engineering and Urban Wind Environment,Beijing Jiaotong University,Beijing 100044,China;Hydr China Huadong Engineering Corporation,Hangzhou 310014,China)

机构地区：[1]大连理工大学深海工程研究中心,大连116024 [2]大连理工大学海岸及近海工程国家重点实验室,大连113024 [3]北京交通大学结构风工程与城市风环境北京市重点实验室,北京100044 [4]中国水电集团华东勘测设计院,杭州310014

出　　处：《太阳能学报》2020年第9期287-292,共6页Acta Energiae Solaris Sinica

基　　金：国家自然科学基金(51709040;51761135011);中央高校基本科研业务费专项资金。

摘　　要：基于计算流体力学(CFD)方法,选取美国可再生能源实验室(NREL)5 MW风力机叶片主要设计参数,重点研究台风风速大于切出风速(风力机停机)时,不同台风入射风向及不同叶片停机桨矩角对风力机叶片气动载荷的影响特征,揭示最不利叶片停机姿态及对应风载系数;进一步对比分析可能出现的最不利叶片变桨故障停机工况与正常顺桨矩停机工况下的风力机气动载荷的特征,提出2种停机姿态下海上风力机最大安全设计风速的对应建议值。This work mainly focused on the investigation of the effects of different wind directions of typhoons and different blade pitching angles on the aerodynamic loads of parked wind turbine blades based on computational fluid dynamic(CFD)method,when wind speed is larger than the cut-off wind speed.The NREL 5 MW wind turbine has been chosen as the object.The most dangerous parking attitude and the corresponding wind loads coefficient of the blade have been obtained.In addition,the comparison between the potential worst fault parking case due to the failure of the blade pitch control system and the normal blades’feathering parking case has been further done,the effect of which on the aerodynamic characteristics of the blades has been clarified.The suggestions of the maximum design wind speed for the two representative wind turbine parking attitudes have been pointed out.

关 键 词：台风 海上风力机 气动载荷 停机姿态 叶片 

分 类 号：TK8[动力工程及工程热物理—流体机械及工程]