双馈式风力发电机并网与解列控制及仿真研究  

Control and Simulation Research on Grid-Connection and Splitting of Doubly-Fed Wind Power System

作　　者：郑景文[1] 刘鹏[1] 李玉超[1] 

机构地区：[1]武汉大学电气工程学院,湖北武汉430072

出　　处：《电机与控制应用》2015年第5期51-57,共7页Electric machines & control application

基　　金：国家自然科学基金资助项目(51207115)

摘　　要：对双馈式风力发电机的起动并网、解列切出的控制过程和控制策略进行了研究。以双馈式风力发电机数学模型为基础,对相应的并网与解列控制方案进行了详细的介绍与分析。然后基于PSCAD/EMTDC仿真,对理论分析结果进行验证。结果表明:给出的并网控制策略电压幅值波动小,控制精度高,响应迅速,能较好跟随网侧电压;按照给出的起动并网步骤,可实现定子电流的零冲击并网。基于斜率控制的定子电流闭环控制策略能平滑且迅速地控制定子电流并快速灭磁,让整个解列过程更加平稳;按照所给解列步骤可使电机从电网中快速脱离,完成软解列过程。The control process and control strategies of Doubly-fed wind power generator’s Grid-connection and Splitting Cutting-out were studied. Based on the mathematical model of doubly-fed wind power generator, the corresponding Control schemes of Grid-connection and Splitting have carried on the detailed introduction and analysis. Then based on PSCAD/EMTDC simulation, the theoretical analysis results were verified. The results showed that：the grid-connection control strategy makes voltage amplitude fluctuation smaller and it has higher control precision, quicker response and it can follow the Grid-voltage; According to the starting grid step, it can realize the interconnection of zero impacts between the stator current. Stator current closed-loop control strategy based on slope control can smooth and rapid control stator current and fast drop-out, it makes whole solution column process more smoothly;Solution steps listed can make the doubly-fed generator cut out quickly from the power grid, completing the process of soft solution column.

关 键 词：双馈风力发电机 起动并网 解列切出 控制策略 仿真验证 

分 类 号：TM315[电气工程—电机]