可识别电源线路断线并自动切换到备用电源的备自投  

The Automatic Back-up Power Supply Device Capable of Identifying Disconnection of Power Supply Line and Automatically Switching to Standby Power Supply

作　　者：马力 MA Li(State Grid Xuchang Power Supply Company,Xuchang 461000,China)

机构地区：[1]国网许昌供电公司,河南许昌461000

出　　处：《电工技术》2018年第13期59-60,63,共3页Electric Engineering

摘　　要：介绍一种利用断线故障时特有的故障象征,识别断线故障已发生不能继续正常供电,并及时采取告警、跳闸、投入备用电源等措施的备用电源自动投入装置。应用该装置可避免供电线路断线故障对用电设备的危害,还可保障用电设备的连续供电。与现有备用电源自动投入装置相比,该备用电源自动投入装置功能更完善。This paper introduces an automatic back-up power supply device.It uses the special fault symbol when disconnection fault occurs,to identify that the fault has occurred and normal power supply would not be continued,and timely take measures such as warning,switch trip and putting in standby power supply.The application of this device can avoid the damage to the electric equipments caused by power supply line disconnection,and it also can guarantee the continuous power supply of the electric equipment.Compared with the existing automatic back-up power supply device,this device is more perfect in functionality.

关 键 词：断线故障 故障象征 备自投 

分 类 号：TM763[电气工程—电力系统及自动化]