Energy Management System for Solar PV System to Reduce Peak Demand

Increasing rooftop solar photovoltaic (PV) systems need efficient energy management strategies to improve the use of energy and reduce costs. This paper presents an energy management system (EMS) for grid-connected solar PV and battery energy storage systems (BESS) to reduce the burden on the grid during peak demand periods by supplying power from BESS that is charged by the generated solar power to the load and improving power flow within the system to achieve cost-effective energy usage. This approach reduces dependence on the grid at peak demand times and reduces power consumption costs. EMS manages BESS charging and discharging processes and power flow among the load, grid, and BESS while supplying reactive power to the load. A simulation interface is used to model the system consisting of the PV system, BESS, and load. The proposed EMS is developed and verified using the simulation. The results are compared to the performance of the PV system with and without the proposed EMS, which illustrates the performance of EMS in improving power sharing and reducing energy costs.