摘要
该文作为2篇系列文章的第1篇,旨在从理论上分析双馈风机组成的大规模风电场集中接入对电力系统暂态功角稳定性的影响。首先,根据双馈风机的暂态特性,提出了一种适用于电力系统暂态功角稳定分析的双馈风机简化模型,并讨论了利用直流潮流计算方法研究风电接入前后系统暂态功角稳定变化趋势的合理性。其次,在双馈风机简化模型和直流潮流计算方法的基础上,利用扩展等面积定则分析了双馈风机接入两机系统后系统暂态功角稳定性的变化,提出一种判断风电接入对两机系统暂态功角稳定影响的判据。最后,在双机互联系统中进行仿真,结果表明,提出的判据具有较高的准确率。
As the first part of this two-part paper, this paper aimed to theoretically analyze the impact of large-scale wind farms consisted of doubly-fed induction generators （DFIG） centralized integration on transient angle stability of power systems. Firstly, a simplified DFIG model suitable for transient angle stability analysis was put forward according to the transient characteristics of DFIG and the feasibility of adopting the DC power flow method to judge how the wind power penetration influenced the transient angle stability was discussed. Secondly, based on the simplified DFIG model and the DC power flow method, the impact on the transient stability of power systems caused by DFIG integration was analyzed using the extended equal area criterion and a criterion was proposed to judge whether the wind power penetration was beneficial to the power system transient angle stability or not. Finally, simulations on a two-machine system were carried out. The results obtained demonstrate the high accuracy of the proposed criterion.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2015年第15期3832-3842,共11页
Proceedings of the CSEE
基金
国家自然科学基金项目(51190103)
国家自然科学基金创新研究群体科学基金资助项目(51321005)
国家高技术研究发展计划(863计划)课题(2013AA050601)~~
关键词
双馈风机
暂态功角稳定
扩展等面积定则
直流潮流
电力系统
doubly-fed induction generator （DFIG）
transient angle stability
extended equal area criterion （EEAC）
DC power flow
power systems
