用于电网末端低电压治理的低压交直流切换供电系统设计  

Low Voltage AC-DC Switching Power Supply System Design for Low Voltage Control at the End of Power Grid

作　　者：罗艳峰 LUO Yanfeng(China Railway Construction Group Zhongnan Construction Co.,Ltd.,Wuhan 430070,China)

机构地区：[1]中铁建设集团中南建设有限公司,湖北武汉430070

出　　处：《通信电源技术》2023年第20期47-49,共3页Telecom Power Technology

摘　　要：针对电网末端低电压治理的低压交直流切换供电系统,设计了低压交直流切换供电模式,通过对模式下的系统架构进行研究,分析了不同电压等级下系统的控制策略,最后通过仿真实验验证了低压交直流切换供电系统的有效性。电力电子技术的发展为我国电网的优化升级提供了新的动力,但同时对电网末端低电压治理提出了新要求。现阶段,常用的解决方案多为交直流混合供电模式,然而实际应用中存在交流侧与直流侧相互影响、电压相互制约等问题,导致电压治理效果不佳。因此,文章基于低压交直流切换供电模式设计一种低压交直流切换供电系统,通过实验验证该系统的有效性。Aiming at the low-voltage AC-DC switching power supply system at the end of the power grid,the low-voltage AC-DC switching power supply mode is designed.The system architecture under the mode is studied,and the control strategy of the system under different voltage levels is analyzed.Finally,the effectiveness of the low-voltage AC-DC switching power supply system is verified by simulation experiments.The development of power electronics technology provides a new impetus for the optimization and upgrading of China’s power grid,but it also puts forward new requirements for the low voltage management at the end of the power grid.At present,the common solutions are AC-DC hybrid power supply mode,but there are some problems in practical application,such as the mutual influence of AC side and DC side and the mutual restriction of voltage,resulting in poor voltage management effect.Therefore,this paper designs a low-voltage AC-DC switching power supply system based on the low-voltage AC-DC switching power supply mode,and verifies the effectiveness of the system through experiments.

关 键 词：末端低压 线路改造 低压交直流切换供电系统 

分 类 号：TM73[电气工程—电力系统及自动化]