适用于网源协调控制的风力机变桨策略设计与实验验证

发布时间：2018-06-06 14:58

本文选题：风力机变桨控制 + 网源协调控制　；参考：《南京理工大学》2017年硕士论文

【摘要】：随着风电技术的发展和风电渗透程度的不断增加,提高电网对风电的接纳能力变得越来越重要。其中网源协调控制作为提高风电接纳能力的重要手段,逐渐受到了广泛的关注。然而网源协调控制方式与传统的风电功率控制方式相比,其变桨系统的运行工况更加复杂。而风力机气动特性具有很强的非线性,这使得传统的变桨控制难以在复杂工况下提供较好的控制性能,因此研究不同主控策略对变桨系统的影响,并构建适用于网源协调控制的变桨控制系统,对建立电网友好型风电场具有重要的意义。本文主要研究风力机变桨控制器,使得风力机的桨距角调节在网源协调下实现高性能的全局控制,为此本文的主要工作归纳如下:(1)首先介绍了风力机的主要组成部分,根据各部分的工作原理和在系统中所起的作用,对风力机系统进行数学建模。(2)基于FAST风力机仿真软件分别对传统主控策略下和网源协调控制下风力机的变桨运行工况进行了研究对比,并提取出影响风力机变桨工况的关键参数。通过仿真分析发现传统的变桨控制器在复杂工况下具有一定的局限性。(3)利用Matlab\Simulink并结合专业的FAST风力机仿真软件来构建仿真平台,通过设计模糊变桨控制器实现复杂工况下的风力机网源协调变桨控制,从仿真结果可以看出,在网源协调控制下模糊变桨控制比传统的变桨控制具有更好的适应复杂工况的能力。(4)在风力机模拟器实验平台搭建变桨系统和模糊变桨控制器,验证控制策略的可行性和适用性。
[Abstract]:With the development of wind power technology and the increasing degree of wind power penetration, it becomes more and more important to improve the acceptance of wind power grid. As an important means to improve the wind power acceptance capacity, the coordinated control of network sources has been paid more and more attention. However, compared with the traditional wind power control mode, the grid source coordinated control mode is more complex than the traditional wind power control mode. However, the aerodynamic characteristics of wind turbine are very nonlinear, which makes it difficult for traditional variable propeller control to provide better control performance under complex operating conditions. Therefore, the influence of different main control strategies on the variable propeller system is studied. It is of great significance to establish a grid friendly wind farm by constructing a variable propeller control system which is suitable for the coordinated control of grid sources. This paper mainly studies the variable propeller controller of wind turbine, which makes the pitch angle adjustment of wind turbine achieve high performance global control under the coordination of grid source. The main work of this paper is summarized as follows: (1) the main components of wind turbine are introduced firstly. According to the principles of the parts and the role they play in the system, Based on the simulation software of FAST wind turbine, this paper studies and compares the variable propeller operating conditions of the wind turbine under the traditional main control strategy and the coordinated control of the grid source. The key parameters affecting the variable propeller condition of the wind turbine are extracted. Through the simulation analysis, it is found that the traditional variable propeller controller has certain limitations under complex working conditions. (3) the simulation platform is constructed by using Matlab\ Simulink and the professional FAST wind turbine simulation software. Through the design of fuzzy variable propeller controller, the coordinated variable propeller control of wind turbine network under complex working conditions is realized. The simulation results show that, Compared with traditional variable propeller control, fuzzy variable propeller control system and fuzzy variable propeller controller are built on the experimental platform of wind turbine simulator. Verify the feasibility and applicability of the control strategy.
【学位授予单位】：南京理工大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TM315

【相似文献】