Firstly

a typical topology structure and node classification of flexible DC distribution network(FDCDN)are described. Secondly

a hierarchical coordinated control architecture for FDCDN is proposed. The system-level control adopts elite strategy based non-dominated sorting genetic algorithm with the embedded probabilistic load flow and the converter-level control uses multi-stage DC voltage margin control. The source-load-level control adopts the “quasi-cocktail” source-load response strategy to minimize the terminal power control error. Finally

a simulation model of FDCDN is established on the RTDS&dSPACE combined simulation platform. The effectiveness of the proposed hierarchical coordinated control strategy is proved by simulation.