摘要
随着风电机组机型多样化,对机组测试周期、成本提出了较高的要求,需要搭建风力发电半物理实验平台.针对现有半物理实验平台难于仿真自然风速和机组模型更改困难的问题,侧重研究了通用的风速模型和通用的变速变桨距机组模型.将风速分解为基本风、阵风、随机风和渐变风四种相互独立的分量,通过分别调节、任意组合,模拟任意风况;在研究变速变桨距机组各主要部件现有模型的基础上,提出了可配置的机组模型,研究了基于配置文件进行模型配置的方法,实现从通用模型到具体模型的映射,使机组模型具有通用性.进一步基于Matlab实现了风速和机组模型,选取三叶片水平轴5MW和20kW两种变速变桨距机型进行了仿真,结果表明:所设计的风速和机组模型可灵活配置,且能够较好地反映不同类型的机组在不同风况和不同控制策略下的输出功率、载荷、转矩等特性,具有较高的实用性.
With the diversification of wind turbine types, test cycle and test cost are challenge problems. It＇s necessary to build wind turbine semi-physical test platform. However, the existing semi-physical test platform has still many problem, for instance, it＇s difficult to simulate the natural wind speed and to change the wind turbine model. A research about the common wind model and the common Variable-speed variable- pitch model is described. Wind speed model is decomposed into four independent components, named basic wind, gust and random wind and gradient wind. So the user can adjust and combine wind speed freely, and simulate any wind speed. By researching on the existing models of variable-speed variable-pitch wind tur- bine, A common and configurable wind turbine model is proposed and the configuration method is dis- cussed, which based on the configuration files, mapping the common model to specific model. Moreover, the method of realization wind speed model and wind turbine model based on Matlab is presented, simulating 5 MW and 20 kW wind turbine in different wind conditions and different control strategy. The results showed that the designed speed and wind turbine model can be configured flexibly, and can present output power , load, torque and other characteristics with low error, and the semi-physical test platform is practi- cality.
出处
《湘潭大学自然科学学报》
CAS
北大核心
2013年第4期83-88,共6页
Natural Science Journal of Xiangtan University
基金
国家能源风力发电机研发(实验)中心能力持续建设项目(发改投资[2011]1952号)
国家自然科学基金项目(61379063)
关键词
风速
风电机组
模型
半物理
载荷
wind speed
wind turbine
model
semi-physical
load
