变速恒频双馈风力发电机低电压穿越初探

Exploration of Low Voltage Across of Variable Speed Constant Frequency Doubly-fed Wind Generators

变速恒频双馈风力发电机接入电网后,当电网发生故障(电网电压跌落时),需要风力发电系统保持与电网的连接,通过建模仿真证明变速恒频双馈风力发电机可以向电网发出无功功率,对电网电压跌落起到一定的补偿作用。

When VSGF doubly fed wind generators are connected to the grid which the failure happens to it has need for the wind power system to maintain the connection with the grid. Through modeling and simulation, It can be proved that VSCF doubly fed wind generators can generate reactive power so that the voltage drop of the grid can be compensated.