Survey of load frequency control strategies in a Microgrid

Abstract

Microgrids (MGs) represent a set of interconnected power generation sources, storage devices, and loads. The most solicited sources are renewable energy sources (RESs) because they help fight against global warming. However, the intermittency of the photovoltaic (PV) and wind (WTG) sources that are the most used will increase the power imbalance that generates the frequency variations since the inertia in the MGs is low. Thus, control strategies are increasingly used to ensure automatically a frequency balance. Therefore, in this paper, after presenting the microgrid and its components understandably, we have used recent papers to illustrate and discuss the most important frequency control strategies within a microgrid, and also some perspectives for future research to better exploit microgrids are presented.