摘要
阐述了双馈式风电机组输入输出反馈线性化的控制原理和动态数学模型(包含变换器),用输入输出反馈线性化的非线性控制方法设计出新型的低电压穿越控制策略,并利用修改的WSCC-9节点系统对所设计的控制策略进行了仿真实验。实验结果表明,所设计的控制策略明显优于传统的矢量控制策略,增强了风电机组的低电压穿越能力,提高了风机并网点电压水平,有利于整个系统在故障发生后恢复稳定运行。
This paper introduces the control theory of double fed wind power units＇ input-output linearization.On the basis of the analysis of dynamic mathematical model（including converter）,it works out a new control strategy for low voltage ride through by applying nonlinear control of input-output linearization.Simulation verification of the new strategy is carried out by using modified WSCC-9 nodal system.Results show that the new strategy surpasses the traditional vector control system,strengthens the low voltage ride through of wind power units,enhances voltage level of grid-connected point of wind power generators and favors the recovery of stable operation after whole system fault.
出处
《黑龙江电力》
CAS
2011年第3期193-198,共6页
Heilongjiang Electric Power
关键词
风力发电
双馈式感应发电机
输入输出反馈线性化
低电压穿越
wind power generation
double fed induction generator
input-output linearization
low voltage ride through
