Optimal Economic Dispatch of Microgrid with Battery Energy Storage Considering High Penetration of Renewable Generation

The energy storage device of the microgrid plays a crucial role in reducing the peak regulation pressure and strengthening the economic benefit of the microgrid. Under the consideration the volatility of photovoltaic and wind power, an optimization model, involving the maintenance and management costs of each power supply in the operation of the microgrid, is established with the lowest operating cost as the objective. Additionally, the influence of different penetrations of renewable energy on the battery charge and discharge is investigated. Then, an appropriate penetration of renewable energy is selected to explore the impact of batteries in different capacities on the microgrid.