海外常用双继电器直流电源切换回路可靠性分析  

Reliability Analysis of DC Power Switching Circuit of Double Relays Used Overseas

作　　者：孙得贤 隋永宝 SUN Dexian;SUI Yongbao(NR Electric Co.,Ltd.,Nanjing 211102,China)

机构地区：[1]南京南瑞继保电气有限公司,江苏南京211102

出　　处：《通信电源技术》2021年第11期51-54,共4页Telecom Power Technology

摘　　要：可靠的辅助电源是保证电力二次装置正常运行的重要保证,现阶段大多数变电站均采用直流电源作为保护和控制电源。介绍了海外常用的一种双继电器直流电源切换回路,对切换原理进行了详细阐述,并结合工程实际对该切换回路进行了可靠性分析,同时提出了改进方案,有效提升了该直流电源切换回路的适应性。Reliable auxiliary power supply is an important guarantee for the normal operation of power secondary devices.At this stage,most substations use DC power supplies as protection and control power supplies.Introduced a dual-relay DC power supply switching circuit commonly used overseas,explained the switching principle in detail,and carried out a reliability analysis of the switching circuit in combination with actual engineering,and proposed an improvement plan,which effectively improved the DC power switching circuit adaptability.

关 键 词：直流电源 切换回路 双继电器 

分 类 号：TM7[电气工程—电力系统及自动化]