New Method Coordinated Control of Battery Energy Storage Systems and Distributed Generations in Distribution Networks

This paper studies on the microgrid operation modes based on a distribution network integrated with battery energy storage systems (BESSs) and distributed generations (DGs) such as solar and wind power plants. The location and capacity of DGs and BESSs are properly optimized to operate the distribution network. The IEEE 33-node distribution network integrated with solar power plants, wind power plants, and BESSs are modeled and simulated using the daily load and generation profiles. The mathematical modeling of the distribution network is applied to run power flow based on the practical load and generation profiles. For grid-following mode, the optimal location and capacity selection of the BESSs will improve the operation efficiency of the network. After integrating DGs and BESSs, the total active power loss is reduced by 27.6% and the voltage quality is also improved by 3.1%. Besides, the BESSs are capable to maintain the stability operation of the distribution network during a specified duration under a microgrid via the coordination between the BESSs and DGs after occurring a failure in the main grid. The simulation results have proven the capability of the BESSs to stabilize and improve the operation efficiency of the microgrid in both grid-following and grid-forming modes.