不同风力机风速突变对其并网系统影响分析

Influence Analysis of Different Wind Turbines on Its Grid-connected System in Case of Abrupt Change of Wind Velocity

在风速突变条件下,对异步式、双馈异步式、直驱式风机接入电网时电压和风能利用率进行了研究,通过对动态模拟仿真结果对比分析可知,在风速突变时,其中直驱式和双馈式风机对并网系统电压影响较小,且风能利用率较高,而异步风机对系统电压影响较大。

Under the abrupt chang of wind velocity, the voltage and the wind power utilization rate when the asynchronous wind turbine, doubly - fed induction wind turbine, direct - driven wind turbine are connected to the power grid are studied. Through the comparison and analysis of dynamic simulation results, it shows that in the abrupt change of wind velocity, the di- rect - driven and doubly - fed induction wind turbines have less influences on the voltage of grid - connected system, and the wind power utilization rate is higher, while the asynchronous wind turbine has more influence on system voltage.