Intelligent Component for Switching Power Supply Fault Early Warning Based on Ripple-Wave Trend Theory
At present,the relay protection products are usually microprocessor protective devices,whose power supply is unexceptionally in the form of switching power supply,and consequently the ageing failure of the witching power supply becomes a major defect.With the wide application of digital protection in recent years,the optical power devices pose higher requirements for the performance of switching power supply.This paper proposes a method to identify the switch power supply performance and life based on the real-time monitoring of the change trend of switch power supply output ripple in order to realize the early warning function.And thereupon,the intelligent component for switch power supply fault early warning has been designed and developed.The component has been applied to the field operation of microcomputer protection device,further improving the device annual utilization rate,and effectively achieving fault early warning.The research results show that this method is reliable effective and practical.
microprocessor protective deviceswitching power supplyripple-wave monitorfault early warning
NETL
NSTL
万方数据
维普
