探讨了大规模双馈型风电场并网后对电力系统小扰动稳定性的影响。在双馈型风力发电机组(doubly-fed induction generator，DFIG)动态建模中，建立基于定子磁链定向控制策略的双馈风机实用机电暂态模型；在转子侧换流器建模中，引入定子磁链定向控制策略实现定子有功、无功功率的解耦控制；并在此基础上推导了含大型风电场接入的电力系统小扰动稳定特征值分析的状态矩阵；最后以新英格兰10机39节点系统为算例，对大型风电场接入的电力系统小扰动稳定性的影响进行了全面的仿真分析，得出了一些初步的结论。

The impact of high penetration of grid- connected wind farms with doubly-fed induction generators (DFIG) on power system small signal stability is systematically assessed. A practical electromechanical transient model is established via employing the stator-flux-oriented vector control scheme. Similarly, the stator-flux-oriented vector control scheme is used to implement the decoupled control of active and reactive power in modeling the rotor-side converter controller. According to the derived DFIG models, the corresponding state matrix related to the small signal stability analysis with grid-connected wind farms of the DFIG type is deduced. Finally, the 10-generator 39-bus New England test system is applied to assess the effect of the large wind farm on power system small signal stability, and some preliminary conclusions are drawn.

国家重点基础研究发展计划项目(973项目)(2004CB217900)；深圳市科技计划项目(JC200903180528A)。