既有低压交流电器设备直流供电可行性研究  

Feasibility Study of DC Power Supply for Existing Low-Voltage AC Electrical Equipment

作　　者：沈晓峰 顾华 陈超杰 SHEN Xiaofeng;GU Hua;CHEN Chaojie(State Grid Qingpu Power Supply Company,SMEPC,Shanghai 201799,China)

机构地区：[1]国网上海市电力公司青浦供电公司,上海201799

出　　处：《电力与能源》2025年第1期44-48,共5页Power & Energy

摘　　要：直流配电效率高,与新能源设备兼容性好,如果既有低压交流电器设备能不做或仅做少量改动即可直接接入直流供电,将极大提升直流配电的可行性。很大一部分开关电源类负载,如电视机、电脑适配器、手机适配器等,理论上可使用直流供电,这类电器若采用直流供电,可有效减少整流电路的使用及整流过程中能量的损耗。提出了不同类别低压交流电器设备直流供电的可行性分析,可为直流配电的开展提供参考。DC distribution is highly efficient and has good compatibility with renewable energy equipment.If existing low-voltage AC electrical equipment can be directly connected to DC power supply with little or no modification,it will significantly enhance the feasibility of DC distribution.A large number of switch-mode power supply type loads,such as televisions,computer adapters,mobile phone chargers,etc.,can theoretically operate on DC power.Using DC power for these devices can effectively reduce the use of rectification circuits and minimize energy losses during the rectification process.This paper presents a feasibility analysis of DC power supply for various types of low-voltage AC electrical equipment,providing a reference for the development of DC distribution systems.

关 键 词：直流配电 低压电器设备 直流供电 能耗 

分 类 号：TM52[电气工程—电器]