基于风电机组无功响应速度的风电场闪变研究

摘要

针对风电机组无功响应速度对风电场并网点电压闪变的影响,从风力发电机组特性出发,基于DIgSILENT建立了含风电机组的电网仿真模型,研究风速波动时风机无功响应速度对风电场并网点电压波动与闪变的影响.算例结果表明:风电机组无功响应速度对并网点电压闪变的影响程度与系统短路容量密切相关,加快风电机组无功响应速度能有效抑制风电场并网点的电压闪变.%For the influence of wind power generation reactive power response to the voltage flicker on the point of common coupling , A simulation model of power grid in which the wind power generation units are included is built. Based on the model set up on the platform of DIGSILENT, the relationship beteen wind power generation reactive power response rate and the voltage flicker under the condition of wind fluctuation has been studied.The results shows that the influence of reactive power response rate on the voltage flicker is closely related to the system short circuit capacity, set up reasonable reactive power response rate according to the grid short circuit capacity can effectively reduce the voltage flicker.