Chromatographic Analysis of Transformer Oil and Its Application

The theoretical basis for analyzing transformer oil chromatograph was stated in which transformer fault type,spot and degree can be determined.The advantages and disadvantages of four methods based on chromatography analysis theory were introduced,including characteristic gas method,air-production velocity method,three-ratio method and TD graph method.The limitation of using artificial intelligence for judging transformer faults was put forward,which is only taken as a supplementary means for diagnosing transformer faults.A new way combining trace metal analysis and chromatograph analysis method was proposed,which was applied in electric power projects and found effective in faults diagnosis.