风力发电高塔系统抗风动力可靠度分析  

Dynamic Reliability Analysis of Wind Turbine Systems Subject to Wind Loads

作　　者：贺广零[1] 李杰[1] 

机构地区：[1]同济大学建筑工程系,上海200092

出　　处：《同济大学学报（自然科学版）》2011年第4期474-481,共8页Journal of Tongji University:Natural Science

基　　金：国家自然科学基金委创新研究群体(50321803;50621062);"十一五"国家科技支撑计划(200611A023);上海市科委"登山行动计划"(06DZ12205);上海市浦江人才计划(06PJ14095)

摘　　要：介绍一种基于广义概率密度演化理论的动力可靠度分析方法.结合随机脉动风场物理模型和"桨叶-机舱-塔体-基础"一体化有限元模型,分别分析1.25 MW风力发电钢塔和钢筋混凝土风力发电高塔的抗风动力可靠度.研究表明,广义概率密度演化方法可以有效地分析风力发电高塔系统抗风动力可靠度.相比风力发电钢塔,钢筋混凝土风力发电高塔具有更高的可靠度.The paper first presents a new dynamic reliability evaluation method based on generalized probability density evolution method（GPDEM）.Then,the dynamic reliability of 1.25 MW steel wind turbine system and reinforced concrete wind turbine system is evaluated separately in combination with the physical model of stochastic wind field and the integrated finite element model consisting of the rotor,the nacelle,the tower and the foundation.The results show that the dynamic reliability of wind turbine systems can be worked out by the proposed method.Besides,the concrete wind turbine system is of a higher reliability than the steel one.

关 键 词：风力发电钢塔 钢筋混凝土风力发电高塔 动力可靠度 广义概率密度演化方法 随机FOURIER谱 旋转Fourier谱 

分 类 号：TK83[动力工程及工程热物理—流体机械及工程]