基于MATLAB的双馈风力发电机组动态特性研究——以内蒙古风力发电厂为例

Study on dynamic characteristics of doubly-fed wind turbine based on MATLAB--Take the wind power plant in inner mongolia as an example

随着风电等可再生能源事业的发展,风力发电对于电网中所占比重不断增大。但风能存在的间歇性和不确定性等问题都需要去解决,分析了双馈感应发电机的变速风电机组的工作方式以及原理,对双馈风电场进行等值建模,利用MATLAB/SIMULINK工具箱对风电机组的传动系统动态仿真分析,以内蒙古某风力发电厂1.5MW双馈感应风力发电机组作为研究案例,分别从故障类型和风速变化两种条件进行研究,得出风电机组在风速波动和不同故障时风电机组的动态特性,这对风电机组进一步优化控制及设计具有较大意义。

With the development of renewable energy such as wind power,the proportion of wind power in the power grid is getting higher and higher.However,the intermittent and uncertain problems of wind energy need to be solved.Based on the analysis of the working mode and principle of variable speed wind turbine of doubly-fed induction generator,the equivalent model of doubly-fed wind farm is established,and the dynamic simulation analysis of transmission system is carried out by using MATLAB/SIMULINK toolbox.Taking a 1.5MW doubly-fed induction wind turbine of a wind power plant in Inner Mongolia as an example,the paper studies the fault types and wind speed changes respectively,and obtains and obtains the dynamic characteristics of wind turbines under wind speed fluctuation and different faults,which is of great significance to further optimize the control and design of wind turbines.