STP 09110.46.300-05: Metodicheskie ukazaniya po diagnostike razvivayushchikhsya defektov transformatornogo oborudovaniya po rezul’tatam khromatograficheskogo analiza gazov, rastvorennykh v masle (STP 09110.46.300-05: Methodological Recommendations for Diagnostics of Developing Defects of Transformer Equipment by the Results of Chromatographic Analysis of Gases Solved in Oil), Minsk, 2005. SOU-NEE 46.501:2006: Diagnostika maslonapolnennogo transformatornogo oborudovaniya po rezul’tatam khromatograficheskogo analiza svobodnykh gazov, otobrannykh iz gazovogo rele, i gazov, rastvorennykh v izolyatsionnom masle (SOU-NEE 46.501:2006: Diagnostics of Oil-Immersed Transformers According to the Results of Chromatographic Analysis of Free Gases Selected from a Gas Relay, and Gases, Dissolved in Insulating Oil), Zaporizhzhia, 2006. RD 153-34.0-46.302-00: Metodicheskie ukazaniya po diagnostike razvivayushchikhsya defektov transformatornogo oborudovnaiya po rezul’tatam khromatograficheskogo analiza gazov, rastvorennykh v masle (RD 153-34.0-46.302-00: Guidelines for Diagnostics of Developing Defects of Transformer Equipment by the Results of Chromatographic Analysis of Gases Solved in Oil), Moscow: Rosseti, 2001. For each case, there is a detailed description of the defect development process (the results of analyzing and testing of a transformer for the preceding period and the records in the operational documentation), as well as the results of transformer investigation, in the course of which the cause of damage done to it has been established. The evaluation of the quality of the methods and the testing of their reliability have been performed for a test sample containing 134 cases of transformer damage. In the course of the testing, special attention was paid to examining the issue that different methods of AGDO interpretation can identify different number of defect types. The quality of the detection provided by the considered methods has been compared with respect to various types of defects. A technique for testing the reliability of the AGDO interpretation methods and results obtained upon testing these methods are presented. In addition, a new method for identifying defect types, an algorithm for its application, and the advantages thereof over other methods are described.

A description of almost all the current widely used methods used for the interpretation of the results obtained in analyzing gases dissolved in oil (AGDO) is presented.

Duval triangle method