Control Method of Reactive Power Sharing for Islanding Microgrid with Multiple Converters

摘要

The islanding mode mircrogrid mostly constructed by multiple converters. Due to the different location, the converters reactive power sharing results always deviate from the set value, which reduced the microgrid stability. In this paper, the cause of reactive power sharing error is firstly analyzed. Based on the hierarchical control method, a reactive power sharing error compensate method is proposed. By using the control method, the reactive power of microgrid can be shared reasonably, and the stability of microgrid system can be improved. Finally, the proposed control method is verified by experiments, and the results show that the proposed control method is effective and feasible.