Load Frequency Control of Single Area Power System with Microgrid using Fuzzy Logic and Virtual Inertia Control

Load frequency control (LFC)is one of the center piece in electrical power system and it is important to keep system frequency at scheduled values. Microgrid (MG) have led to vast efforts to expand their penetration in electric power system. It transfers power to multi area power system using power electronics devices. Due to this overall system inertia is reduced and this reduces the frequency/voltage stabilization. This paper proposes a hybrid ac/dc MG with thermal unit as utility grid and effect of virtual inertia is studied with classical Proportional Integral Derivative (PID) and fuzzy control (FC). The effectiveness of the virtual inertia control concept in stability improvement is verified. The coordination control algorithm is proposed for stable power system under various solar power generations and load conditions. The simulation and results are done by using SIMULATION MATLAB package software.