Abstract:
In order to realize the comprehensive and optimal utilization of solar and wind energy,improve energy utilization,further promote the process of rural electrification and help“carbon peak and carbon neutralization”,a new rural distribution network structure based on the integration of wind,solar energy and storage was designed.An energy management control method aiming at power conservation was studied in order to achieve optimal energy utilization and system stability. The system is composed of AC bus,DC bus,distribution network access system,wind power system,photovoltaic power system,energy storage system,DC load access system and AC load access system.It can not only be connected to the grid,but also operate on an island.The topology of each subsystem and the overall topology of the system were given respectively.Through the simulation experiment,it was verified that when the wind speed,light intensity and load change,the system energy could maintain stable flow and the DC bus voltage could always maintain stability by using the regulation of the energy storage system.