The Research on Mitigating Sub-synchronous Oscillation of Large-Scale Wind Farm Integrated into Power System in Planning and Design Stage

Large-scale wind power development and delivery has the risk of inducing sub-synchronous oscillation. In the planning and design stage of the wind farm, assessing the risk of sub-synchronous oscillations of different design schemes can provide an important reference for the optimization of design schemes. Firstly, a relatively complete assessment index system including wind farm size, fan selection, sending line series compensation degree is constructed. Secondly, the gray correlation analysis method is used to assess the risk of sub-synchronous oscillations of different design schemes. Finally, the optimization results is used to wind farm planning and design. The validity and rationality of the proposed scheme research are verified by an example.