海上风电-TMD系统随机振动减振效果研究  

STUDY ON STOCHASTIC DYNAMIC VIBRATION AND DAMPING EFFECT OF OFFSHORE WIND TURBINE AND TMD SYSTEM

作　　者：练继建[1,2] 赵悦[1,2] 练冲 王海军[1,2] Lian Jijian;Zhao Yue;Lian Chong;Wang Haijun(State Key Laboratory of Hydraulic Engineering Simulation and Safety,Tianjin University,Tianjin 300350,China;School of Civil Engineering,Tianjin University,Tianjin 300350,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300350 [2]天津大学建筑工程学院,天津300350

出　　处：《太阳能学报》2020年第7期334-340,共7页Acta Energiae Solaris Sinica

基　　金：科技部重点领域创新团队(2014RA4031);高等学校学科创新引智计划(B14012);天津市科技计划(16PTGCCX00160);国家自然科学基金青年基金(51709202)。

摘　　要：为了减少海上风电结构随机振动响应,保证其在复杂环境激励下安全性与可靠性,该文针对海上风电结构-调频质量阻尼器(TMD)系统在随机激励下减振效果进行研究。首先将海上风电结构等效为旋转-摆动模型,利用路径积分法和蒙特卡洛法分别用于求解4维和6维微分方程,计算该系统在随机激励下动力响应的概率密度函数,对比不同TMD参数配置的减振效果。结果表明:路径积分法和蒙特卡洛法能够准确计算海上风电-TMD系统动力响应的概率密度函数;针对算例中海上风电筒型基础结构在白噪声激励和随机风荷载激励下,TMD结构可有效减少振动位移均方根值分别为47.2%、15.8%。In order to reduce random vibration response of offshore wind power structure and ensure its safety and reliability under the complex environment,the study was focused on the damping effect of a system consisting of an offshore wind turbine structure-tuned mass damper(TMD)under random excitation.The offshore wind turbine structure was rationally equivalent to a system of rotation-swing.Then,the path integration method and the Monte Carlo method were used to solve 4-dimension equations and 6-dimension equations,respectively.Finally,the probability density functions of the dynamic response of the system under random excitation were calculated,and damping effects of different TMD parameters were compared.The results show that 1)the probability density functions of the dynamic response of the offshore wind turbine structure-TMD system can be accurately obtained by the path integration method and Monte Carlo method;2)the root mean squares of vibration displacement of this bucket foundation supported offshore wind turbine in the example are reduced by 47.2%and 15.8%under white noise excitation and random wind excitation,respectively.

关 键 词：海上风电 调频质量阻尼器 减振 概率密度函数 

分 类 号：TK8[动力工程及工程热物理—流体机械及工程]