Design of One New Low-Cost Flexible Interconnection of Distribution Grids and Control System

Using flexible interconnection devices to transform the distribution network can achieve efficient interaction among generation, network, load, and storage, addressing the issues of load imbalance and power quality caused by the large-scale integration of distributed energy sources. This paper summarizes the circuit topology and control technology of flexible interconnection for distribution grids. A comparative analysis of circuit topologies for flexible interconnection in distribution grids was conducted, proposing a novel series-type flexible interconnection. The study includes an analysis of the topology structure and control principles, and describes the corresponding valve control system and drive modules. Finally, prospects for the development trend of flexible interconnection technologies in medium-voltage distribution networks were provided..