| 风力发电高塔系统抗风动力可靠度分析 |
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| 引用本文： | 贺广零,李杰.风力发电高塔系统抗风动力可靠度分析[J].同济大学学报(自然科学版),2011,39(4):474-481. |
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| 作者姓名： | 贺广零 李杰 |
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| 作者单位： | 同济大学建筑工程系,上海,200092 |
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| 基金项目： | 上海市科委各类项目（项目编号）,国家自然科学创新研究群体科学基金（项目编号）,“十一五”国家科技支撑计划（项目编号） |
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| 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.
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| 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 |
| 收稿时间： | 2009/12/12 0:00:00 |
| 修稿时间： | 3/22/2011 9:05:45 AM |
Dynamic Reliability Analysis of Wind Turbine Systems Subject to Wind Loads |
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| HE Guangling and LI Jie.Dynamic Reliability Analysis of Wind Turbine Systems Subject to Wind Loads[J].Journal of Tongji University(Natural Science),2011,39(4):474-481. |
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| Authors: | HE Guangling and LI Jie |
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| Institution: | Tongji University,Tongji University |
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| Abstract: | It is very useful to accurately evaluate the dynamic reliability of wind turbine systems under wind loads as wind energy is clean and renewable. Firstly, a new dynamic reliability evaluation method based on generalized probability density evolution method (GPDEM) is introduced in the paper. Then, the dynamic reliability of 1.25MW steel wind turbine system and reinforced concrete wind turbine system is evaluated separately associated 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 owns a higher reliability than the steel one. |
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| Keywords: | steel wind turbine system reinforced concrete wind turbine system generalized probability density evolution method random Fourier spectrum rotational Fourier spectrum dynamic reliability |
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