摘要在整个风力发电的模拟过程中，对于风速的模拟是不可或缺的一个重要环节，我们希望正确的风速模型能够去反映实际风速的变化情况，而且能够给整个风力发电模拟系统的研究提供正确的参数。本文在了解自然界风速特性的基础上，模拟短期特性和中长期特性均与之相符的脉动风速序列,并使其满足一定功率谱密度特性，来满足风机动态仿真的需要。本论文具体使用matlab以及四种不同的方法建立脉动风速的数学模型，并通过仿真结果分析与比较，包括比较各风速模拟方法在风机动态分析中的适用性，比较各方法模拟的风速特性与实际脉动风速特性的吻合程度。结果表明，使用滤波法和ARMA模拟的风速可以充分反映一定时间尺度内风速变化的统计规律和相关特性，而且其模拟的风速功率谱密度与标准功率谱密度和实际风速功率谱密度吻合都较好。19260
关键词 脉动风速 组合风速 Weibull分布 ARMA法 滤波法 功率谱密度
毕业论文设计说明书（论文）外文摘要
Title Fluctuating Wind Speed Simulation Suitable for Wind Turbine Dynamic Analysis
Abstract
During the simulation of the entire wind power,wind speed simulation is indispensable,We hope to be able to reflect changes in wind speed model the actual wind speed, and wind power to be able to look at the whole simulation system to provide the correct parameters.Based on the understanding of the natural world on the basis of wind characteristics,we simulate the characteristics and short-term and long-term characteristics are consistent with the sequence of fluctuating wind,also,they meet certain characteristics of the power spectral density to meet the needs of a dynamic simulation of wind turbines.In this paper,we use four different methods with matlab to build mathematical models of turbulent wind velocity,We carried out some comparison including the applicability of each wind speed simulation method of dynamic analysis and the extent consistent with the actual fluctuating wind speed characteristics.The results showed that the use of filtering and ARMA modeling wind speed is fully reflected within a time scale statistical laws wind speed and related characteristics, simulated wind speed and its power spectral density with power spectral density standard power spectral density of the actual wind speed and are better agreement .
Keywords fluctuating wind speed the combination of wind Weibull distribution ARMA method filtering power spectral density
目 次
1 绪论 1
1.1 研究背景 1
1.2 风速模型建立的意义 1
1.3 风速研究现状 1
2 风速模型 3
2.1 风速模型 3
2.2 平均风速 3
2.3 湍流风速 3
2.4 实际风速 4
3 风速模拟方法 6
3.1 Weibull分布模拟法 6
3.2 组合风速法 7
3.3 滤波法 9
3.4 自回归滑动平均（ARMA）模型模拟法 13
4 仿真实现 16
4.1 Weibull风速仿真 16
4.2 组合风速仿真 18
4.3 滤波法风速仿真 20
4.4 ARMA（自回归滑动平均）模型风速仿真 22
4.5 长期风速仿真 23
4.6 风速模拟方法小结 24
结论 27
致谢 28
参考文献 29
1 绪论 ARMA适用于风机动态分析的脉动风速模拟:http://www.751com.cn/zidonghua/lunwen_10556.html