Combined Defects Recognition in the Low and Medium Temperature Range by Results of Dissolved Gas Analysis
Оleg Shutenko, Oleksii Kulyk
Abstract
A comprehensive analysis of the oil gas content of 125 high-voltage transformers with combined defects in the low and medium temperature range was carried out for the first time ever. The values of gas percentage and gas ratio for each of 14 defect types were obtained. New 12 nomograms and graphic areas for combined defects in the low and medium temperature range were obtained firstly. The reliability of data recognition using known standards and methods was analysed. The given data allow increasing the reliability of defect type recognition by results of analysis of gases dissolved in oil.
Topics & Concepts
Dissolved gas analysisReliability (semiconductor)Materials scienceTransformerAtmospheric temperature rangeVoltageRange (aeronautics)Transformer oilAnalytical Chemistry (journal)Environmental scienceElectrical engineeringComposite materialChemistryEngineeringEnvironmental chemistryThermodynamicsPhysicsPower (physics)Power Transformer Diagnostics and InsulationHigh voltage insulation and dielectric phenomenaPetroleum Processing and Analysis