Research on Operation and Control of Distributed Wind and Storage Power Supply

This paper designs a small-scale wind power and energy storage DC microgrid system operating in autonomous condition, in view of the shortage of power energy and the abundant of wind energy at remote areas. The bipolar-type distribution system can reduce the bus voltage to ground and meet the requirements of various converters and loads. The voltage balancer contributes to balance bus voltage between positive and negative. The wind turbine and hybrid energy storage system (HESS) operate in optimal model with different conditions. The system operation is divided into five patterns, and the wind turbine, HESS and loads are coordinated controlled, which can ensure the stability of the DC bus voltage and the reliability of the power supply. The simulation results validate that this system operation is reliable and the control strategy is effective.