摘要
分析电网电压跌落引起风电机组各主要结构部件机械载荷变化的应力传递过程,通过建立风电机组电气-机械联合仿真模型,仿真研究低电压穿越过程对机械载荷特性的影响。基于低电压穿越期间载荷测试数据,分析低电压穿越期间塔筒机械载荷及其疲劳损伤情况。研究结果表明,低电压穿越过程对风电机组机械载荷特性具有重要影响,尤其是当风力发电机组不具备低电压穿越能力而导致风电机组脱网时。
The stress transfer process of the main components of the wind turbine due to the voltage dip of the grid was analyzed. The wind turbine combined electrical and mechanical models were both established to simulate and research the effects on the mechanical characteristics due to the LVRT process. Based on the wind turbine mechanical load measurement data during the LVRT, the mechanical load of the tower of the wind turbine was researched, and simultaneously the fatigue damage was also given. The conclusion of this study is that the LVRT process can make great influences to the mechanical characteristics of the wind turbine, especially while the wind turbine is grid off due to no ability of the LVRT.
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2016年第5期1100-1106,共7页
Acta Energiae Solaris Sinica
基金
国家重点基础研究发展(973)计划(2012CB215105)
国家能源局应用技术研究及工程示范项目(NY20110404-1)
