改进的双馈风力发电系统小干扰模型An Improved Small Perturbation Model for Doubly Fed Wind Power System
魏巍;刘莹;丁理杰;李兴源;
摘要(Abstract)：
基于双馈风力发电机转子运动方程,对双馈风力发电机组接入无穷大系统引发的负阻尼型低频振荡进行机理分析,寻找产生负阻尼的系统运行条件,以及影响系统阻尼的各个运行参数。基于李亚普诺夫原理,建立了改进的双馈风力发电机组小干扰稳定性模型,相比传统的双馈风力发电机组小干扰稳定性模型。该模型将风机的机械特性、轴系传动特性、发电机电磁特性以及定、转子侧的控制特性全部反映到风机的状态方程里,可以更加准确地反映风机接入系统后的振荡模态。仿真结果验证了上述模型的有效性,并对比了双馈风电机组处于不同运行模式不同控制方法下的系统模态。
关键词(KeyWords)： 低频振荡;小干扰模型;双馈风力发电机;轴系模型
基金项目(Foundation):
作者(Author): 魏巍;刘莹;丁理杰;李兴源;
Email:
DOI: 10.13335/j.1000-3673.pst.2013.10.021
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