Coordinated control and application of multi-terminal DC distribution system

Because of the rapid development of power electronics, DC loads, and distributed energy resources, the advantages of DC distribution systems are increasingly prominent. This paper provides a brief description of the concepts and functional advantages of DC distribution systems, introducing the main equipment of multi-terminal DC (MTDC) distribution system, the topologies, and the typical application scenarios of each topology. The coordinated control technology of MTDC distribution system is analysed and summarized in terms of control architecture, coordinated control, damping control, and operation mode. The existing MTDC distribution demonstration projects are summarized, and recent typical projects are introduced. Finally, the issues that can be studied regarding to the innovation and application of MTDC distribution system are pointed out. (c) 2023 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

Automated summary

This paper provides an overview of the concepts and functional advantages of DC distribution systems, along with an introduction to the main equipment, topologies, and application scenarios of multi-terminal DC (MTDC) distribution systems. It analyzes and summarizes the coordinated control technology of MTDC distribution systems, including control architecture, coordinated control, damping control, and operation mode. The existing MTDC distribution demonstration projects are summarized and recent typical projects are introduced. The paper concludes by highlighting the areas that can be studied for the innovation and application of MTDC distribution systems.