Fault diagnosis and analysis on AVR based on FTA

AVR is the key part of supplemental power station for equipment,which plays an important role in leveling off the voltage of power station and making the power station work normally.Firstly,this paper analysed the defect of AVR as well as the characteristic of fault tree and the steps in establishment.Secondly,according to the experience of former fault removal of AVR and its structure,the voltage regulating fault is analyzed and the design of fault diagnostic process is completed,combined with making all the faults into a full fault tree,and then the fault diagnosis for AVR is better designed and realized.