Overview and Prospect of Topology Research on High Voltage and Large Capacity DC Transformer
Developing direct current(DC)grid technology based on DC aggregation,DC transmission and distribution is crucial for supporting large-scale renewable energy integration and adapting to diverse load connections in the future.High-voltage,large-capacity DC transformer,as one of the most critical equipment in DC grids,play an essential role in DC voltage conversion and power flow control.Addressing the current research status and development situation of high-voltage,large-capacity DC transformer,this paper first introduces three main application scenarios and analyzes the technical requirements based on them.Then,it systematically summarizes the research status of high-voltage,large-capacity DC transformer topologies at domestic and abroad and summarizes the common structural patterns and interconnections among topologies.Finally,it provides prospects for future research issues and possible development directions.This content can serve as a technical reference for the further development and engineering application of high-voltage,large-capacity DC transformer.
DC gridsDC transmissionrenewable energy aggregationhigh-voltage and large-capacity DC transformerDC transformer topologies