基于PSCAD的双馈式风力发电系统柔性并网研究PSCAD Based Research on Flexible Grid-Connection of DFIG Wind Power Generation System
安中全;任永峰;李含善;
摘要(Abstract):
双馈式风电机组已成为风电领域应用最为广泛的一种主流机型。推导了双馈电机在发电机惯例下的动态数学模型,用内模控制实现双馈电机转子电流内环和转速外环的控制,提出了基于内模控制的柔性并网运行控制策略,应用PSCAD/EMTDC建立了完备的2 MW并网运行双馈式风力发电系统仿真模型,对风速突变时系统柔性并网响应特性进行了细致的仿真研究。研究结果表明,建立的双馈式风电系统模型控制性能和动态响应速度均较好,提出的控制策略能快速地控制发电机的定子电压满足并网条件。通过风速突变工况仿真模拟可以看出,该系统实现了双馈式风电系统在变风速条件下的柔性并网。仿真结果与理论分析相一致,验证了仿真模型的正确性。
关键词(KeyWords): 双馈感应电机;柔性并网;内模控制;PSCAD;风力发电;建模
基金项目(Foundation): 教育部科学技术研究重点项目(210037);; 内蒙古自然科学博士基金项目(2011BS0903);; 内蒙古自然科学基金重大项目(200711020801)~~
作者(Author): 安中全;任永峰;李含善;
Email:
DOI: 10.13335/j.1000-3673.pst.2011.12.035
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