| 摘要: |
| 针对双馈风力发电机组（DFIG）发生定子绕组匝间短路（SWITSC）故障后的稳定性问题，建立了SWITSC故障下的DFIG的小干扰稳定性分析模型。基于Lyapunov稳定性理论进行特征值分析，并勾勒出主导特征值的变化轨迹；另外，找出了对稳定性影响作用较大的关键性控制参数，结合仿真波形说明了DFIG稳定性的变化情况。得到结论：DFIG发生SWITSC故障后，其稳定性有所下降，但在风速及控制参数合理的条件下仍然具有保持稳定运行的能力。 |
| 关键词: 双馈风力发电机组 风电 定子绕组匝间短路故障 小干扰稳定性 特征值分析 控制参数 |
| DOI： |
| 分类号: |
| 基金项目:国家自然科学基金资助项目（51277077） |
|
| Modeling and stability analysis of DFIG with stator fault |
|
XU Boqiang, ZHANG Shuyi
|
|
School of Electrical and Electronic Engineering，North China Electric Power University，Baoding 071003，China
|
| Abstract: |
| A small signal stability analysis model is established for DFIG（Doubly-Fed Induction Generator） with SWITSC（Stator Winding Inter-Turn Short Circuit） to study its stability. Its eigenvalues are analyzed based on Lyapunov stability theory and the loci of its dominant eigenvalues are drawn. The key control parameter greatly influencing the stability of DFIG is found and the variation of DFIG stability is analyzed based on the simulative waveforms. Conclusion is that，although the stability of DFIG declines due to its SWITSC，it still maintains stable operation as long as both the wind speed and key control parameter are reasonable. |
| Key words: doubly-fed induction generator wind power stator winding inter-turn short circuit small signal stability eigenvalue analysis control parameters |
