基于SVS与STATCOM协同无功补偿系统提高风电场暂态特性研究

Research on improving transient characteristics of the wind farm based on the coordinated reactive power compensation system of SVS and STATCOM

风电大规模并网的新形势下,单一的无功补偿装置已经很难满足需求。基于STATCOM反应速度快、有效抑制谐波和SVS补偿无功功率容量大的特点,提出了SVS与STATCOM协同无功补偿系统。最后在DIg SILENT/Power Factory15.0搭建风电场并网系统,当并网点发生三相短路时,分别在STATCOM单独作用和SVS与STATCOM协同作用下进行仿真,根据仿真结果得出STATCOM与SVS协同系统能够有效提高风电场暂态稳定性。

Under the new situation of large scale wind power integration,a single reactive power compensation device cannot meet the demand. Based on STATCOM＇s fast response and effectiveness in suppressing harmonics and SVS＇s large reactive power compensation capacity,a coordinated compensation system of SVS and STATCOM was proposed in this paper. The wind power grid-connected system was constructed in Digsi Lent / Powerfactory15. 0. When the three-phase short circuit occurred at the grid-connected point,the system was simulated respectively under the sole operation of STATCOM and under the coordinated operation of SVS and STATCOM. Simulations results clearly verified that the coordinated system of STATCOM and SVS could effectively improve transient stability of the wind farm.