基于MATLAB的并网风电场动态仿真  

DYNAMIC SIMULATION OF GRID-CONNECTED WIND FARMS BASED ON MATLAB

作　　者：韩肖清[1] 胡月星[1] 张伟[1] 史燕[1] 

机构地区：[1]太原理工大学电气与动力工程学院,太原030024

出　　处：《太阳能学报》2008年第2期175-179,共5页Acta Energiae Solaris Sinica

基　　金：山西科技攻关项目(No.052028)

摘　　要：以并网型风电场为研究对象,建立了异步风力发电系统的动态数学模型,包括风速、风力机、异步发电机以及补偿电容器4部分,其中异步发电机采用三阶模型。利用MATLAB/Simulink建立了仿真系统模型,详细论述了仿真的方法和过程,并对风电场接入电力系统进行了动态稳定分析,验证了采用S函数和Simulink相结合的方法可以有效进行电力系统的分析与计算。同时对如何提高风电系统短路故障后的动态稳定性进行了研究,提出了采用x/r较小的联络线或适当提高电容器的补偿量都有助于提高短路故障后风电系统稳定性的改善措施。Taking grid-connected wind farms as an object, the dynamic model of asynchronous wind power system was presented in the paper, including wind speed, windmill, asynchronous generator and capacitor, in which the asynchronous generator is a three-steps model. The method and process of the dynamic simulation based on MATLAB/Simulink were discussed in detail, and the dynamic stability of the wind farm after connecting power system was analyzed, which validates the method of combining S-function with Simulink. At the same time, how to improve dynamic stability of wind power system after the short-circuit fault was studied, and using less x/r tie-line and enhancing compensation of capacitor were put forward to be helpful to the power system stability.

关 键 词：风电场 异步发电机 MATLAB 动态仿真 

分 类 号：TM743[电气工程—电力系统及自动化]