摘要
建立了包括轴系、变频控制器、串联电容在内的双馈风力发电系统模型,采用特征值分析法,计算了次同步谐振(SSR)振荡频率和参与因子,得出了与轴系扭振模态强相关的状态变量,并用时域仿真验证了串补度、风速对SSR的影响及在MATLAB/Simulink仿真平台进行验证。研究结果表明,串补度的改变将破坏SSR现象发生的条件,风速的变化对SSR现象没有影响。
A doubly-fed wind power generation system model including a shaft,a variable frequency controller,and a series capacitor compensation was established. Eigenvalue analysis was used to calculate the oscillation frequency and participation factors aiming to find the most strongly correlated state variables with shafting torsional vibration mode. Time-domain simulation was used to verify the impact of degree of series compensation,the wind speed on SSR. The results showed that changes in the degree of series compensation would break the conditions of SSR,changes in wind speed have no effect on SSR.
出处
《电机与控制应用》
北大核心
2015年第3期51-55,共5页
Electric machines & control application
关键词
双馈风力发电机
次同步振荡
次同步谐振
DFIG-based wind turbine
sub-synchronous oscillation
sub-synchronous resonance（SSR）
