Power Coordination Strategy for Flexible Interconnected Distribution Systems Containing Multiport Energy Routing Device

For the AC/DC distribution system with the PV and energy storage, the power coordination control strategy based on multiport energy routing device is proposed. The energy storage includes mobile energy storage vehicles and electric vehicles. Firstly, the multiport energy routing device is constructed from the AC/DC/AC cascade converter, and the typical operation modes of the system under energy storage voltage regulation are analyzed. Then, the power balance relationship and mode switching logic within the system under different operating modes are investigated based on the PV output and energy storage state. Subsequently, the load balancing control strategy considering normal and failure conditions is proposed to regulate power flows, ensuring consistent load rates across distribution areas. The power regulation command of the proposed strategy can enable system stability and load transfer, which improves the power supply reliability of the interconnected distribution system.