Dynamic simulation for grids with high penetration of renewables: the role of shifted frequency analysis

As outlined in a recent IEEE report, grid with high penetration of renewables create new challenges for dynamic modeling. The classical separation between electromechanical and electromagnetic transients loses its role and it becomes more difficult to have an adequate description in the time domain without reaching a huge level of computational complexity. Shifted frequency analysis emerged as a possible compromise to have a flexible model able to capture a variety of dynamics in a single representation. The presentation will introduce the modeling approach and its implementation in the open source tool DPSim.