LOW VOLTAGE APPARATUS ›› 2021, Vol. 0 ›› Issue (10): 92-98.doi: 10.16628/j.cnki.2095-8188.2021.10.015

• Application • Previous Articles    

Discussion on Low Voltage DC Power Supply System Scheme for Road Lighting

XU Biao1, LIU Yueying1, DU Yongbang1, ZHONG Anqi2   

  1. 1. Shenzhen Municipal Design & Research Institute Co.,Ltd.,Shenzhen 518029,China
    2. National Active Distribution Network Technology Research Center,Beijing Jiaotong University,Beijing 100044,China
  • Received:2021-04-17 Online:2021-10-30 Published:2022-01-25

Abstract:

With the development of LED street lamps and multi-functional lamp poles,the advantages of lowvoltage DC power supply technology for road lighting have attracted more and more attention.First through the comparison of human AC and DC current effects,the power safety performance of DC power supply is quantitatively analyzed,which can be used as the basis for the safety evaluation of the system scheme.Focusing on the relationship between DC system voltage level,main wiring form,grounding mode and safety performance,the design methods of low voltage DC power supply system for road lighting are studied,and the protection differences of AC and DC systems and their effects on power supply distance and protective appliances are analyzed.Finally,referring to the design examples completed under typical engineering conditions,the application value of road lighting low voltage DC power supply technology in safety,economy and protection characteristics is preliminarily verified.

Key words: road lighting, low voltage DC, voltage level, main wiring form, grounding mode, load distance

CLC Number: