An Enhancing Grid Stiffness Control Strategy of STATCOM/BESS for Damping Sub-Synchronous Resonance in Wind Farm Connected to Weak Grid

Under weak grid, wind farm can easily cause subsynchronous resonance (SSR) owing to the impedance interaction between wind farm and grid. In this article, a synchronous compensator with battery energy storage system (STATCOM/BESS) is connected in parallel with grid to suppress this SSR. Meanwhile, analogizing virtual synchronous generator (VSG), an enhancing grid stiffness control strategy is proposed for STATCOM/BESS with low rated active power...