大型风电机组仿真及试验系统Ⅱ．建模和仿真

A Large-scale Wind Power Generation Simulation and Testing System Ⅱ.Modeling and Simulation

建立了包括异步感应式发电机、双馈感应式发电机和永磁同步发电机在内的主流风电机组数学模型,针对不同的机组类型提出了相应的风力机模型和变频器控制策略。以建立的数学模型为基础,确立了接入无穷大系统的风电场模型,模拟风力机风速变化情况,对各个风机模型在风速扰动下的响应特性进行了仿真分析研究,并将仿真波形进行了简单的比较。仿真结果验证了模型的正确性,3种主流风力发电机模型的建立为大型风电机组仿真及试验系统提供了研究基础。

The primary dynamic models for wind turbine sets, including asynchronous machine, doubly-fed machine and permanent-magnet synchronous machine were established. According to their different kinds, the paper also presented the different models of wind-turbine as well as different control algorithms to rectifier. It constructs a model of wind farm which is connected with infinite system on the basis of above dynamic models, too. Taking changing wind speed for ex- ample, the response characteristics of different dynamic models for wind turbines were simulated and simply compared. The simulation results show that the established models are correct, and it provides a base of research for the large-scale wind power generation simulation and testing system.