双馈风电机组并网暂态稳定性研究

Study on Transient Stability of Grid-Connected Doubly-Fed Wind Generator

构建了双馈风电机组的数学模型,着重分析了其在恒功率因数和恒电压控制两种运行方式下的无功电压控制原理,在Matlab/Simulink工具中搭建风电并网系统模型,仿真结果表明恒电压控制方式能使双馈风电机组充分发挥其无功调控潜能,故比恒功率因数运行方式更好地改善风电并网系统的暂态稳定性。

This paper established the mathematical model of doubly-fed wind generator, focusing on analysis of its reactive power and voltage control principles under two operation modes including constant power factor and constant voltage control, and building wind power system model in the Simulink tools of Matlab. Simulation results show that the constant voltage control mode could make doubly-fed wind generator take full advantages of reactive power regulation function and is a better way to improve wind power system transient stability compared with the constant power factor operation mode.