风力发电系统的混杂控制技术研究

发布时间：2018-02-22 08:46

本文关键词： 风力发电混杂控制自动机理论混杂自动机链系统预估控制　出处：《郑州大学》2014年硕士论文　论文类型：学位论文

【摘要】：随着人类社会的进步和经济的发展，能源和环境问题已经成为世界各国最为关心的问题之一。风力发电以其环保无污染、发展前景大、可开发性强和风能储存量大等优点，备受各国的高度重视，风力发电的控制技术也因此得到了快速的发展。由于风力发电系统涉及空气动力学、自动控制理论、机械传动理论、电机学等多门学科，且因风能随机性、突变性等多种不稳定因素的存在，风力发电系统的控制问题极其复杂，是一个复杂的多变量非线性不确定系统。尤其是风力发电系统的建模问题，针对这样的复杂非线性系统存在有多种不同的建模方法，合理的构建系统模型对系统控制的研究具有很大的意义。本课题的主要内容是混杂控制技术在风力发电系统中的应用研究。由于传统的风电控制技术大多数都是将风力发电系统构建成一个单一的离散控制系统模型或者连续控制系统模型，没有更好的描述出风电系统的真实特性。本课题就是通过对实际风力发电系统的结构和运行特性的分析，证明了风力发电系统具有明显的混杂特性，从而进一步深入研究了混杂控制技术在风力发电系统中的应用。本课题通过对混杂系统的结构和特性研究，分析了风力发电系统的混杂特性，并介绍了混杂系统的常用控制方法。对风力发电系统的物理结构进行了研究，并分析了系统中重要组成部分的物理特性，包括有自然风特性、风力机的机械特性、传动系统物理结构模型以及发电机模型。然后是对自动机理论和混杂自动机模型进行了介绍与研究，并在此基础上研究了风力发电系统的混杂自动机模型。为了能够更好的体现混杂控制技术的优越性，本课题采用链系统理论方法设计了预估控制器。在深入研究链系统理论及其预估控制算法的基础上，设计出适合本课题所建风力发电系统模型的控制规律。最后，，在对系统控制结构模型和控制算法分析后，设计出Matlab/Simulink仿真模型。通过计算机仿真得出了预估控制器在风力发电系统中的控制效果，结果表明，混杂控制技术在风力发电系统中得到了理想的应用，在理论发展上具有一定的意义价值。本课题所研究的混杂控制技术在风力发电领域是一种较新的应用，对风力发电技术的发展具有一定的意义。
[Abstract]:With the progress of human society and the development of economy, energy and environment problems have become one of the most concerned problems in the world. The control technology of wind power generation has been developed rapidly. Since wind power system involves many subjects, such as aerodynamics, automatic control theory, mechanical transmission theory, motor science and so on, Due to the existence of wind energy randomness, mutation and other unstable factors, the control problem of wind power system is extremely complex, and it is a complex multivariable nonlinear uncertain system, especially the modeling problem of wind power system. There are many different modeling methods for such a complex nonlinear system, and it is of great significance to construct the system model reasonably for the study of system control. The main content of this paper is the application research of hybrid control technology in wind power system. Because most of the traditional wind power control technology is to construct a single discrete control system model of wind power system. Continuous control system model, There is no better description of the true characteristics of the wind power system. This subject is based on the analysis of the structure and operation characteristics of the actual wind power system, which proves that the wind power system has obvious hybrid characteristics. Therefore, the application of hybrid control technology in wind power system is further studied. By studying the structure and characteristics of hybrid system, the hybrid characteristics of wind power system are analyzed. The common control methods of hybrid system are introduced. The physical structure of wind power system is studied, and the physical characteristics of important components of the system, including natural wind characteristics, mechanical characteristics of wind turbine, are analyzed. The physical structure model and generator model of transmission system are introduced, and the automaton theory and hybrid automaton model are introduced and studied. On this basis, the hybrid automata model of wind power system is studied. In this paper, the predictive controller is designed by using the chain system theory. On the basis of deeply studying the chain system theory and its predictive control algorithm, the control law suitable for the wind power system model is designed. Finally, after analyzing the control structure model and control algorithm of the system, the Matlab/Simulink simulation model is designed, and the control effect of the predictive controller in the wind power system is obtained by computer simulation. The results show that, Hybrid control technology has been applied in wind power system and has a certain significance in theory development. The hybrid control technology studied in this paper is a new application in the field of wind power generation. It has certain significance to the development of wind power technology.
【学位授予单位】：郑州大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM614;TP273

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