基于MATLAB/Simulink的风电系统仿真
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基于MATLAB/Simulink的风电系统仿真(论文13000字)
摘要：随着气候环境、能源利用等一系列的问题日益受到全世界每一个国家的关注，作为可操作性最强的能源再生技术，风能发电成为了全世界各国研发中心关注的焦点。重点讲述了当今风电行业的发展情况以及MATLAB/Simulink的使用，并运用MATLAB/Simulink研究与配电系统相连的9MW风电场的稳态和动态性能方面的应用。一共有六台工作容量达到1.5MW大小的风力发电机所组成的风电场，同25kV额定电压的配电系统相连接，流经30公里长的馈电线，最终向电网输出电能。仿真部分主要包括风机对风速变化的响应和120kV系统电压暂降对电网产生的影响，从而得出风速的突然变化对于风力发电机组的发电电压、电流、有功功率、无功功率、转速等方面产生的影响，以及电压源的电压暂降对于输出到电网的电能的影响。仿真结果符合理论，验证了分析。掌握了这些动态性能之后，为实际生产中的出现类似情况，提供解决问题的思路。
关键词：风力发电系统；MATLAB建模；仿真；风电场
Wind Power System Simulation Based on MATLAB/ Simulink
Abstract：With the development of climate, environment and energy utilization, a series of problems have got a lot of attention increasingly from every country in the world. The wind power generation technique is the most operable energy regeneration technology, which has become the focus of research and development centers all over the world. In this paper, the development of wind power industry and the use of MATLAB/Simulink are briefly introduced. The application of MATLAB/ Simulink in the study of steady and dynamic performance of 9MW wind farm connected with distribution system is studied. A total of six wind farms with 1.5 MW wind turbines are connected to a 25kV rated voltage distribution system, flowing through a 30 km long feeder and eventually exporting electricity to the grid. The simulation part mainly includes the response of wind turbine to the change of wind speed and the influence of voltage sag of 120kV system on the power grid. The influence of sudden change of wind speed on the generation voltage, current, active power, reactive power, speed of wind turbine and the influence of voltage sag of voltage source on the power output to the power grid are obtained. The results accord with the theory and validate the analysis. After mastering these dynamic performances, it can provide solutions for similar situations in actual production.
Key words：wind power generation system；MATLAB modeling；simulation；wind farm
目 录
摘要 Ⅰ
Abstract Ⅱ
1 绪论 1
1.1 国内外风力发电发展现状 1
1.2 风电系统的研究背景和意义 3
2 风电系统 4
2.1 双馈感应发电机的模型介绍 4
2.2 风力发电组运行原理 5
3 风电系统的建模与仿真 7
3.1 MATLAB/Simulink基本介绍 7
3.2 风电系统总体结构布局 9
3.3 风速模块搭建 14
3.4 风机对风速变化的响应的仿真 17
3.5 120kV系统电压暂降的仿真 21
3.6 仿真结果分析 23
4 总结与展望 26
参考文献 26
致 谢 27 |
