750kV Substation Transformer On-line Monitoring And Fault Diagnosis System Design And Application

Power system of power transformer not only belongs to one of the mostimportant and the most expensive equipment, but also one of the most popularequipment power system accidents, therefore, should not only at home and abroad ona regular basis for preventive maintenance based on preventive test, and successivelyin research based on the on-line monitoring of unexpected maintenance strategy, sothat real-time timing and on-line monitoring and diagnosis of latent failure or defects.Transformer before the sudden accident, deterioration of the insulation and latent faultunder the operating voltage will produce light, electricity, sound, heat, chemicalchange and a series of effect and information.This paper studies intelligent online monitoring and fault diagnosis is regularly,such not only can grasp the running status of transformer in time, detection andtracking of latent faults, and can in time according to the expert system for automaticfault diagnosis, in order to run personnel quickly dealt with; At the same time,improve the reliability of fault diagnosis; In the master control room of eachsubstation main transformer oil chromatographic analysis circuit monitoring;According to need, but also can reflect the characteristics of the anomalies of theelectrical transformer more quantity of online intelligent monitoring and diagnosis offault comprehensive assessment, and other online monitoring and diagnosis andsubstation equipment online, realize the on-line intelligent monitoring and diagnosisof substation operation; Using on-line monitoring device on the technical andeconomic has significant advantages, can not only improve the substation runningmanagement level, but also for the transition from the preventive maintenance systemto the unexpected maintenance system to lay the foundation.