Energy Optimization Model of Microgrid with Unified Power Quality Conditioner

It proposed an energy optimization model for microgrids with a unified power quality conditioner (UPQC). Consider UPQC as a tool for microgrid load regulation, combined with adjustable loads to form a flexible load overall model. Solve and analyze the energy optimization model based on the power output of distributed generators and load prediction curves in multiple scenarios. Quantitatively analyzes the role of UPQC in optimizing the energy operation of microgrids, taking into account charging and discharging costs of energy storage, wind abandonment costs, UPQC equipment depreciation costs, and load regulation subsidies. In some microgrids scenarios with a large amount of renewable energy access, UPQC can improve the economic benefits of operators and flexible load users by adjusting the steady-state operating point of flexible loads. The correctness and effectiveness of the energy optimization model in this paper have been verified through numerical case and simulation results.