Optimization and Simulation of Photovoltaic Microgrid Composite Energy Storage System Network Format

In order to realize the flexible scheduling of photovoltaic energy, the energy balance of composite energy storage system and ensure the stable operation of photovoltaic microgrid, the grid format optimization simulation of photovoltaic microgrid composite energy storage system is carried out. Build a photovoltaic microgrid with a composite energy storage system, analyze each component of the photovoltaic microgrid, and confirm that there is an associated energy relationship between them; The grid energy storage division algorithm based on composite energy storage division takes the grid energy storage division results of photovoltaic microgrid composite energy storage system, optimizes the supercapacitor capacity and battery energy storage capacity, integrates the measurement units of the two, and optimizes the grid energy storage of composite energy storage system; The improved ant colony algorithm is used to solve the optimization objective function. The test results show that this method can analyze the situation of the application scenario, implement the network format division of the composite energy storage system, and realize the flexible energy scheduling of the composite energy storage system in each subnet after division. The energy utilization efficiency is higher than 80%, the light rejection is less than 10%, and the purchased power results are less than 5.5mw/h.