分散式风力发电机组的电压控制

Voltage control for wind turbine of dispersed wind power

风电的分散式开发不同于大规模开发和分布式开发,由于分散风电靠近负荷中心,直接接入配电网,且不加装无功补偿调节装置SVC,配网中较大的电压波动给分散风电的并网运行带来影响。文章讨论了配网对分散风电的电压控制特点和要求,结合风电机组无功控制能力,并推导出满足配网电压调节要求的风电机组无功控制范围和对机组设备的要求。

Dispersed wind power is different from large-scale wind power and distributed wind power.As dispersed wind farms locate near load center and are integrate into distribution grid,as well as static VAR compensator（SVC） is not installed for reactive power adjusting. But voltage fluctuations existing in distributed grid impact on wind turbine operation. The voltage control demand of disposed wind power is discussed in this paper. And reactive power control strategy and its variables are then presented.Finally, the effectiveness of this control strategy is verified by simulation based on standard distribution grid.