Research on Black Start Control Strategy Based on Electric Energy Router

With the advancement of smart grid technology, energy storage technology, and renewable energy, microgrid are becoming an integral part of modern energy systems. Due to their dependency on the main grid, microgrid are susceptible to instability in energy supply. To enhance power supply reliability, increase renewable resource integration, and enable autonomous restoration of power in the event of large-scale grid outages, this paper proposes a coordinated control strategy for black start in DC microgrid based on an electric energy router (EER). First, the black start process of the microgrid and the startup sequence of EER ports are analyzed. Next, voltage construction and control method for EER ports are studied, and a photovoltaic-storage cooperative black start control scheme based on the EER is designed. Finally, simulation results verify the effectiveness of the proposed control strategy in enhancing black start capabilities and operational reliability of microgrid, achieving autonomous black start without reliance on the main grid.