Coordinated Damping Control Design for Power System With Multiple Virtual Synchronous Generators Based on Prony Method

With more renewables integrated into power grids, the systems are being transformed low inertia electronic dominated systems. In this situation, virtual synchronous generator (VSG) control strategy was proposed to deal with insufficient challenge caused by reduction of generation. However, as VSG method emulates dynamic behavior traditional machines, interaction between multiple controllers and generators (SGs) may cause low-frequency oscillation similar that SGs. This paper reveals system oscillatory modes affected VSGs. Then Prony analysis is utilized extract mode information which will be subsequently used for controller design, a decentralized sequential coordinated design supplementary damping (SDC) The first analyzed based on modified two-area linearized state-space model, further case study revised New England 10-machine 39-bus demonstrate effectiveness