摘要
为研究含分布式双馈风力发电的配电网广义综合负荷特性,本文提出了一种双馈式风力发电系统的三阶感应电机综合等效模型。分析了DFIG发电系统的等效电路、静态功率特性及其控制策略;讨论了DFIG等效模型的结构特点及其参数辨识方法;通过在输出方程中引入一阶差分环节,提出了具有一阶内反馈结构的模型改进方案,显著改善了三阶等效模型对DFIG发电系统的动态特性的描述能力,并在机理上对该改进模型的物理意义进行了阐述;最后通过一系列的建模仿真实验,验证了该模型的有效性。
In order to study the characteristics of generalized integrated load containing distributed doubly-fed wind power generation system in the distribution network, this paper proposes a three-order induction motor comprehensive equivalent model of a doubly-fed wind power generation system. The equivalent circuit, static power characteristics and control strategy of the doubly fed induction generator(DFIG) power generation system are firstly analyzed; on this basis, the structural characteristics and parameter identification of DFIG generation system are discussed. Then, an internal feedback link is introduced in the output equation to improve the equivalent model's description of dynamic characteristics of DFIG, and the physical meaning of the improved model are explained from mechanic perspective. Finally, the validity of the model is verified through a series of modeling and simulation experiments.
出处
《电工技术学报》
EI
CSCD
北大核心
2015年第8期210-217,共8页
Transactions of China Electrotechnical Society
基金
国家重点基础研究发展计划(973计划)(2012CB215106)
国家高技术研究发展计划(863计划)(2011AA05A113)
国家自然科学基金(50977023
51277056)资助项目
