摘要
该文应用等效集中质量法,建立了同时考虑风力机叶片弯曲柔性以及风力机和发电机之间传动轴扭转柔性的风力机3个质量块等效模型。结合并网笼型异步发电机的电磁暂态模型,以额定功率330kW(MADE-AE30)和3MW的风力发电机组为例,在电网电压骤降和机械大扰动下,与风力机传统1个、2个质量块等效模型的机组暂态稳定性进行了仿真比较。分析了叶片不同弯曲柔性、不同折断点位置对3MW风电机组电暂态稳定性的影响。结果表明,该文建立的风力机等效模型对准确分析风力发电机组暂态稳定性是必要和有效的。
By using equivalent lump mass method, a three-mass wind turbine equivalent model is presented considering both the bending flexibility of blades and the torsional flexibility of the drive-train shaft between the wind turbine and induction generator. Combined with the electrical transient models of a grid-connected squirrel cage induction generator （SCIG）, during a grid voltage drop and a mechanical large disturbance, the transient stability of two wind generator systems with rated power 330 kW （MADE-AE30） and 3 MW are investigated, respectively. Simulation results are also compared with those of the typical single-mass and two-mass equivalent models of wind turbines. The effects of the different bending flexibility of blades and the different position of blades breakpoint on the electrical transient stability of the rated power 3 MW wind turbine are also analyzed. The results show that the proposed equivalent model of wind turbine is essential and valid to analyze accurately the transient stability of wind turbine systems.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2008年第17期105-111,共7页
Proceedings of the CSEE
基金
国家自然科学基金项目(50607022)~~
关键词
风力发电
暂态稳定性
笼型异步发电机
风力机
叶片柔性
传动轴
等效模型
wind power generation
transient stability
squirrel cage induction generator
wind turbine
blade flexibility
drive-train shaft
equivalent models
