摘要
随着风电规模的不断增大,风电接入对系统功角稳定影响机理的研究值得重视。该文基于双馈风电机组在故障期间的等效外特性和单端送电系统的功率特性方程,研究不同风电规模对送端电网和受端电网之间电气距离的影响,以及不同风电规模在不同故障状态下对系统暂态功角稳定性的影响机理。得出了近距离故障和远距离故障下,系统功角特性随着风电装机规模的提高而改善,当风电装机规模达到一定程度后,功角稳定性不再改善反而出现恶化趋势的结论。通过对实际电网进行仿真计算,证明了不同规模的风电接入对系统功角稳定影响结论的正确性。
With the wind scale continuously increases, the research on the influence mechanism of wind power integration on the power system angle stability should be paid attention to. Base on the equivalent external characteristics of doubly-fed induction generator （DFIG） during the period of the fault and the power characteristic equation of single-terminal delivery system, the effect of different scale wind power on the electrical distance between the sending power grid and the receiving end power grid is studied, and the influence mechanism of different scale wind power integration on power system angle transient stability under different fault conditions is researched. It is conclusion that in the condition of close distance fault and remote distance fault, system power angle characteristic improves with the increase of the wind power scale, when the wind power scale reaches a certain level, the power angle stability deteriorates, far from improving. It is proved that the analysis of impact of different scale wind power integration on power system angle stability is correct through simulation calculation of the actual grid.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2017年第5期1324-1332,共9页
Proceedings of the CSEE
基金
国家863高技术基金项目(2012AA050201)
高渗透率间歇性能源的区域电网关键技术研究与示范(K-ZB2011-013)~~
关键词
大规模风电接入
双馈风电机组
等效外特性
功率特性方程
功角暂态稳定
large-scale wind power integration
doubly-fed induction generator （DFIG）
equivalent external characteristics
the power characteristic equation
angle transient stability
