基于PSCAD/EMTDC的双馈感应风电系统数学建模与仿真  

Mathematical Modeling and Simulation of DFIG Wind Power System Based on PSCAD/EMTDC

作　　者：顾静鸣[1] 张琛[1] 蔡旭[2] 高强[2] 

机构地区：[1]上海交通大学电气工程系,上海200240 [2]上海交通大学风力发电研究中心,上海200240

出　　处：《华东电力》2013年第6期1150-1156,共7页East China Electric Power

基　　金：国家高技术研究发展项目(2011AA05A104)

摘　　要：根据双馈电机在两相旋转坐标系下的数学模型,介绍了一种在PSCAD/EMTDC下通过自定义数学模块搭建双馈风机系统仿真模型的方法。分析了风力机、传动链以及双馈电机的数学模型建模,搭建了最大功率跟踪与变桨控制系统模型、转子侧以及网侧的矢量控制系统模型,对基于Crowbar的低电压穿越控制策略进行了建模,形成了完整的单机数学模型。针对正常工况和电网电压跌落情况进行了仿真,仿真结果表明该模型可以准确地反映双馈风力发电系统的电磁动态特性。自定义数学模型为风机仿真提供了更高的灵活性。According to the mathematical model of the doubly-fed machine in the two-phase rotating coordinate sys- tem, this paper introduces a method to build the simulation model for DFIG wind turbine system in PSCAD/EMTDC based on the custom defined mathematical module. Firstly the mathematical modeling of wind turbine, drive chain and DFIG is analyzed; then the maximum power tracking system, blade pitch control system, the rotor side and grid side vector control system are modeled; the model for low voltage ride through strategy based on crowbar control is al- so constructed, forming a complete DFIG model. The simulations are conducted under the condition of both the nor- mal operating and network voltage drop. The results show that the model can accurately reflect the dynamic character- istics of the DFIG wind power system. The model offers higher flexibility for wind turbine simulation.

关 键 词：双馈风机 PSCAD EMTDC 数学建模 

分 类 号：TM614[电气工程—电力系统及自动化]