With varying degrees of structural failure of the mean standard mode

Depth study of power transformer oil dissolved gas and the relationship between the type of fault basis, from the state assessment , fault diagnosis and fault prediction research is based on three aspects of the oil dissolved gas analysis of power transformer fault diagnosis technology . The main contents are as follows: ( a ) for the power transformer condition assessment is proposed based on weighted gray  air circuit breaker  power transformer condition assessment methods . With varying degrees of tectonic faults mean standard mode , and proposed grades combined score grading and classification of specific strategies to improve the stability of the assessment methods and versatility . ( 2 ) for the power transformer fault  Voltage stabilizer  on improved BP algorithm nonlinear homotopy power transformer fault diagnosis method . Avoid local minima in the ability to greatly improve , but also improve the accuracy and reliability of diagnosis . ( 3 ) for the power  mcb circuit breaker  fault prediction is proposed based on improved gray forecasting GM (1,1, ρ) model of power transformer fault prediction method . Can effectively predict transformer oil dissolved gas concentration in the next moment , to provide the basis for the failure prediction . ( 4 ) Construction of a power transformer fault diagnosis expert system, and designed its software platform.