风电场接入新疆某地区电网暂态电压稳定性研究

基于电网网络特性和三相短路故障等因素,通过对普通异步风力发电机和双馈风力发电机风电场接入新疆某地区电网的仿真计算,得出了风电场暂态电压极限功率,分析了系统的暂态电压稳定性。根据仿真结果可以得出,短路容量大的系统暂态电压稳定性越强;双馈风力发电机组能够通过转子变频器进行无功电压调节控制,所以在三相短路故障时其暂态电压稳定性比普通异步风力发电机组更稳定。

Research on Transient Voltage Stability with Wind Farm Integration into a Regional Power Grid of Xinjiang

Based on the network characteristics of power grid and three - phase short - circuit fault, through the simulation cal- culation of a certain regional power grid connected with wind farms adopting the common asynchronous wind turbine generators and doubly - fed wind turbine generators, the transient voltage limit power of wind farm is obtained, the transient voltage stability is analyzed. It can be seen from the simulation results that the transient voltage stability is stronger as the short - circuit capacity of the system is larger. Doubly - fed wind turbine generators can regulate the reactive voltage through the rotor frequency converter, so its transient voltage stability is more stable than that of the common asynchronous wind turbine generators when there is a three -phase short -circuit fault.