潘学萍;张弛;鞠平;吴峰;金宇清;张源;

• 1:河海大学能源与电气学院

摘要(Abstract)：

以往在对双馈风电机组进行同调判别时,常将发电机端口的有功功率及无功功率受扰轨线作为观测量。但由于有功功率及无功功率不是系统的状态量,将其作为同调判别的观测量可能带来一定误差。基于同步发电机及异步电动机的同调判别方法,指出应选择主导模式中参与因子较大的状态量作为观测量。即基于特征根技术,提出双馈风电机组的同调判别应以转子电流为观测量。同时,还提出综合风电机组初始运行点及动态特性的两步分群方法,即先根据风电机组的初始风速进行首次分群,然后基于风电机组的动态特性再次分群。该方法不仅能够较准确地估算等值机的等效风速,还可以使等值系统的动态特性与原系统尽可能一致。最后通过仿真算例验证了所提方法的可行性。

关键词(KeyWords)： 双馈风电机组;风电场建模;动态等值;同调;分群

Abstract:

Keywords:

基金项目(Foundation): 国家863高技术基金项目(2011AA05A103);; 国家自然科学基金项目(51190102,51137002,51207045)~~

作者(Author): 潘学萍;张弛;鞠平;吴峰;金宇清;张源;

Email:

DOI: 10.13335/j.1000-3673.pst.2015.03.006

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