摘要
应对全国范围内迅速展开的风电各系统多种形式的并网试验测试,文章给出了双馈异步风力发电机组针对低电压故障穿越(低穿)的一种新的控制方案,即过载超调策略。原有的控制策略存在振动等不稳定因素,功率"凹坑"和有功出力恢复缓慢等一系列技术难题。而过载超调控制策略是在国外主控厂家控制策略的基础上,加以创新性质的完善改进工作,突破了低穿控制策略技术的封闭。本研究以现场实测数据为技术支撑,加之科学理论分析,对于确定详细的风机并网测试低穿认证具有重要的指导意义和实用价值。
This paper introduces the new DFIG LVRT strategy, which is overload control strategy （OS）according to all kinds of grid tests. OS is an innovative research which bases on the foreign controllers. OS has done well with WT vibration, power pit and recov- er problems and so on. On account of scientific and virtual data, the LVRT technology research is useful for the simulation of wind turbine and makes a good preparation for the stability analysis on the wind farm.
出处
《东方汽轮机》
2013年第3期39-42,共4页
Dongfang Turbine
