Control Strategy for Frequency Control in Autonomous Microgrids

Due to the deployment of distributed generation, future grids will show reduced inertia resulting in higher dynamics and reduced frequency stability. This is especially true in microgrids (MGs). In this sense, the virtual synchronous generator (VSG) concept has been proposed as a promising solution. In this paper, the benefits of this concept are further explored studying the frequency stability improvement under simulation of different cases regarding the MG operation. Here, the analysis is carried out looking at the impact of the control parameters on the rate-of-change-of-frequency and on the average frequency deviation. The VSG concept shows a great potential to reduce both parameters improving the frequency stability.