Performance Enhancement of a Grid-Connected Micro Grid System using PSO Optimisation Technique

In a renewable energy system (RES), maintaining the balance of power between supply and demand with minimum cost in homes connected to these systems present one of the most important challenges to consider. Generally, a large capacity of batteries is usually used to store the energy and reused in absence or insufficient power supply in order to maintain the required energy balance. Thus, a hybrid proposed controller is proposed to analyze the stability of Micro Grid system (MG) using Particle Swarm optimisation (PSO) technique. Two modes of controllers are utilised to attain the stability of the MG system. The first PV / WT method works by using the voltage modulated direct power control (VMDPC) to achieve maximum grid power and also used to enhance the maximum power and the steady-state performances. The second mode of battery storage is operating to maintain the voltage and frequency in the MG through the utilization of the conventional controller. The key objective function is to achieve the maximum power and stability of the system with the implementation of the proposed controller. Simulink/MATLAB environment is used to examine the performance of the proposed system.