集群风电基地的电压安全稳定控制策略探究

Voltage Security and Stability Control Strategy Exploring on Wind Farm Clusters

基于集群风电基地的电网特性，分析了DFIG低电压穿越过程中的无功电压特性，DFIG在故障穿越期间异步运行需要从电网中吸收无功功率；研究了风电出力水平对并网点的稳定性影响，得出当风电功率较大时，并网点电压水平更脆弱，电网无功需求更多；最后针对集群风电基地连锁故障可能发生的这两种影响因素，提出了集群风电基地的无功电压安全稳定控制的闭环控制框架。

Based on the grid characteristics of while the process of low voltage riding through wind power base, DFIG reactive voltage characteristics is analyzed; During the fault ride-through time, DFIG will absorb reactive from the grid; Wind power output level that the wind power outputs level is high,more reactive is influences the stability is studied, found needed. Finally proposed the voltage and reactive power loop emergency control framework about wind power base.