Improvements in Frequency Control of an AC Microgrid by Means of Micro-Hydropower Combined Flow-Reduced Dump Load Control Method

Load Frequency Control (LFC) is an issue of top importance to ensure microgrids (MGs) safe and reliable operation in AC MGs. Primary frequency control each energy source can be guaranteed MGs order integrate other sources. This paper proposes a micro-hydro scheme, combining the reduced dump load nozzle flow Pelton turbines operating isolated from electricity grid. Some researchs have reported integration methods, but they did not reduce value adjust linearly power demanded by users, causing inefficient use water. Simulation results were obtained Matlab®/Simulink® using models previous research proven means experimental studies. The simulation proposed scheme shows that instantaneous variation about 2 % even for perturbations magnitude up 12 %. validation result 60 reduction overshoot settling time temporal behaviour autonomously.