摘要
对微机保护开关电源原理进行分析,介绍开关电源电压建立时的时序控制和电解电容的主要作用,阐述电解电容对开关电源寿命的影响。对某供电公司近3年电容器失效引起的故障进行统计分析,提出使用高品质元件、降低温升、开关电源检修转换等优化措施。
This paper analyzes the principle of microprocessor-based protective switching power supply,introduces the sequence control of switching power supply voltage and the main function of electrolytic capacitor,and expounds the influence of electrolytic capacitor on the lifetime of switching power supply.Based on the statistical analysis of the faults caused by the failure of capacitors in a power supply company in recent 3 years,the optimization measures such as using high quality components,reducing temperature rise,switching power supply maintenance and conversion are put forward.
作者
钟著辉
ZHONG Zhuhui(State Grid Changde Power Company,Changde 415000,China)
出处
《湖南电力》
2021年第4期74-77,共4页
Hunan Electric Power
关键词
继电保护
开关电源
电解电容
温升
轮换
relay protection
switching power supply
electrolytic capacitor
temperature rise
change in turn
