Keywords
Technical advantages
Key technologies
Development status
Future prospects
Submitted : 2026-05-30
Accepted : 2026-06-14
Published : 2026-06-29
Abstract
Against the strategic background of the “dual carbon” goals, flexible DC distribution technology has become a core pillar of the new power system with its high-efficiency, flexible and controllable technical advantages. It can not only coordinate the relationship between distributed generation and the power grid, but also adapt to high-proportion new energy access and promote the low-carbon transformation of the power grid. This paper analyzes the advantages and core technologies of flexible DC distribution technology, expounds its development status, and prospects its development path from three aspects: R&D of power electronic equipment, optimization of flexible DC distribution protection schemes, and coordinated development, aiming to provide a reference for the stable development of the new power system.
References
Jiao Z, Han Z, Yang Y, et al., 2024, Development and Application of 750 V Flexible DC Power Supply System for Intelligent Computing Center. Designing Techniques of Posts and Telecommunications, 2024(10): 27–30.
Zhao Y, Zhang S, Huang Y, et al., 2024, Fault Identification of Flexible DC Distribution Lines based on Improved Deep Residual Network. Smart Power, 52(9): 72–79.
Zheng C, Wu W, 2024, Overview of Protection Strategies for Flexible DC Distribution Networks. Sichuan Electric Power Technology, 47(4): 65–70.
Jin E, Zhang B, Hu X, et al., 2024, A New Single-Ended Protection Method for Flexible DC Distribution Lines based on Current-Limiting Reactor Voltage. Journal of Northeast Electric Power University, 44(3): 64–73.
Xie S, Wang Z, Zhang X, et al., 2024, Transient Stability Timing Logic Simulation Analysis of Flexible DC Distribution System Terminals based on 5G MEC Networking. Machine Design and Manufacturing Engineering, 53(5): 83–86.
Wang L, 2024, Protection Method of Flexible DC Distribution Lines Considering Instantaneous Power. Electric Power and Energy, 45(2): 160–163+168.
Liu H, Li D, Liu S, et al., 2024, Control and Protection of Multi-Terminal Flexible DC Distribution Network based on MMC. Power Capacitor & Reactive Power Compensation, 45(2): 84–90.
Bian X, 2023, Construction of Economic Benefit Comprehensive Evaluation Model for AC/DC Distribution Technology of Flexible Substation. Modern Industrial Economy and Informatization, 13(12): 226–228.
Shen F, 2023, Analysis on Fault Identification and Location Technology of Flexible DC Transmission Lines. China High-Tech, 2023(20): 12–14.
Li Z, Cheng H, Ma H, et al., 2023, Research on Braking Strategy of Current Differential Protection for Flexible DC Distribution Network. Rural Electrification, 2023(10): 31–36.
Li G, Ma Y, 2022, A Short-Circuit Fault Location Technology for Flexible DC Distribution System. China Science and Technology Information, 2022(4): 81–83.
Geng S, Yu M, Guo X, et al., 2022, Economic Evaluation of AC/DC Distribution Technology based on Flexible Substation. Journal of Electric Power Science and Technology, 37(1): 140–150.
Chen B, Lun Z, Zhang X, et al., 2022, Multi-Objective Comprehensive Evaluation of Flexible DC Distribution System For Data Centers. High Voltage Engineering, 48(10): 3987–3995.
Zheng J, Chen J, Liu Y, et al., 2021, Urban Energy Internet based on Flexible DC Distribution Network. Southern Power Grid Technology, 15(1): 25–32.
Li F, 2020, Discussion on Flexible DC Distribution Technology for Electric Drive Compressor Stations of Long-Distance Natural Gas Pipelines. Electrical Appliance Industry, 2020(10): 68–71.