继电保护用开关电源中特殊技术指标与实现  

Implement of Special Qualifications in Switching Power Supply for Relay Protection

作　　者：王铁平[1] 赵上林[2] 

机构地区：[1]南京工程学院,江苏南京210013 [2]东南大学电气工程系,江苏南京210096

出　　处：《江苏电机工程》2005年第6期52-54,共3页Jiangsu Electrical Engineering

摘　　要：针对微机继电保护用开关电源的特殊技术指标,结合所开发的继电保护用开关电源(以下简称继保电源),介绍了主电路设计方案,讨论了电源输出过欠压保护的实现方式,比较了5V与24 V启动关机时序配合的2种电路,从理论上分析了电源异常保护后不可自恢复的实现手段。Based on the special qualifications in switching power supply for microcomputer relay protection and the power supply which has been developed,firstly the scheme of main circuit is introduced,then the realization of outputs＇ overvoltage-undervoltage protection is discussed. Two circuits about time sequence on power-up and shutdown between 5 V and 24 V are also compared with each other in the thesis. At last, a method to solve manual-restart of power supply after exception is analyzed in theory.

关 键 词：继电保护 开关电源 过欠压 时序 电路 

分 类 号：TN86[电子电信—信息与通信工程]