Research on the Application of 750 V DC Power Supply in Tunnel Lighting Field
ZHANG Wenjie
LIU Yangbo
LIU Diao
Abstract：With the advancement of green energy-saving technologies and the policy guidance of China's national dual-carbon strategy and green development initiatives,the contradictions between traditional street lighting systems—characterized by high energy consumption,high maintenance costs,and low intelligence—and evolving development demands have become increasingly prominent.In contrast,DC power distribution systems,leveraging their high efficiency,flexibility,and reliability,have attracted extensive attention in public infrastructure applications such as data centers,rail transit,and smart buildings.Among these systems,the 750 V DC power supply has emerged as a research hotspot in tunnel lighting due to its unique potential advantages.This paper analyzes the potential of 750 V DC power in energy efficiency,reliability,and intelligent control by comparing it with traditional AC power supply systems.Additionally,practical cases are utilized to validate its feasibility,and its advantages,key technologies,and application effectiveness in tunnel lighting systems are explored.
Keywords：DC power distributiontunnel lightingenergy efficiency750 V voltage levelintelligent control
Publication Date：2025-09-25
Online Publishing Date：2025-10-14(First online date of this platform, not the publication date of the document)
Pages：5( 45-49 )