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Dissolved Gas Analysis for Power Transformers within Distributed Renewable Generation-Based Systems
IEEE transactions on dielectrics and electrical insulation, 2021In this paper, a series of laboratory experiments are conducted to investigate the effect of momentary small variations in the transformer operating temperature on the dissolved gas analysis (DGA) measurement.
H. Cui +5 more
semanticscholar +1 more source
2019
The collection and analysis of gases in an oil-insulated transformer were discussed as early as 1928 [1]. One of the signs of fault diagnosis in a transformer is the rapid growth of gases during a failure of an oil-filled transformer. It should be noted that these gases are dissolved in the oil. As a result, some faults could be identified by analyzing
Behrooz Vahidi, Ashkan Teymouri
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The collection and analysis of gases in an oil-insulated transformer were discussed as early as 1928 [1]. One of the signs of fault diagnosis in a transformer is the rapid growth of gases during a failure of an oil-filled transformer. It should be noted that these gases are dissolved in the oil. As a result, some faults could be identified by analyzing
Behrooz Vahidi, Ashkan Teymouri
openaire +1 more source
Dissolved Gas Analysis in Mineral Oil and Natural Ester Liquids from Thermal Faults
IEEE transactions on dielectrics and electrical insulation, 2021This work addresses the gas formation mechanisms for paraffinic-type mineral oil and soybean-based natural ester with a predominantly linoleic fatty acid under thermal faults.
M. Meira +3 more
semanticscholar +1 more source
Rapid dissolved gas analysis by means of electrochemical gas sensors
Proceedings of 2002 IEEE 14th International Conference on Dielectric Liquids. ICDL 2002 (Cat. No.02CH37319), 2003Rapid, introductory analysis of gases dissolved in insulating oil (DGA) carried out in the field can help in effective screening of faulty transformers as well as minimising number of classical laboratory chromatographic DGA tests. It is also crucial for shortening a time gap between oil sampling and its analysis.
P. Zylka, B. Mazurek
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Dissolved-Gas Analysis for Nitrogen-Blanketed Transformers
2020 IEEE PES Transmission & Distribution Conference and Exhibition - Latin America (T&D LA), 2020Nitrogen-blanketed transformers gradually flush out oxygen and fault gas in the course of temperature-driven headspace pressure regulation. Consequently it is possible in many such transformers for intermittent or moderate fault gas production to go unrecognized if fixed limits are used to detect abnormal gassing.
James J. Dukarm, Zachary H. Draper
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IEEE Sensors Journal
Equipment faults in power transformers can be detected by analyzing the dissolved gas in their internal insulation oil. In this study, the adsorption behavior and sensing properties of several characteristic dissolved gases (H2, CO, C2H2, and C2H4) on ...
Renchu Zhao +5 more
semanticscholar +1 more source
Equipment faults in power transformers can be detected by analyzing the dissolved gas in their internal insulation oil. In this study, the adsorption behavior and sensing properties of several characteristic dissolved gases (H2, CO, C2H2, and C2H4) on ...
Renchu Zhao +5 more
semanticscholar +1 more source
Dissolved gas analysis using expert system
Student Conference on Research and Development, 2003This project is to study a dissolved gas analysis of transformer oil using an expert system. A prototype of an expert system based on the dissolved gas analysis techniques for diagnosis of a suspected transformer faults and the appropriate maintenance actions to be taken.
M. Binti Ahmad, Z. bin Yaacob
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Dissolved Gas Analysis for Power Transformer Fault Diagnosis Based on Deep Zero-Shot Learning
IEEE transactions on dielectrics and electrical insulationRapid and accurate fault diagnosis methods of power transformers are essential to ensure power systems’ safe and stable operation. However, the problem of limited fault data and missing data leads to inadequate feature learning, mapping offset, and low ...
Leixiao Lei, Yigang He, Zhikai Xing
semanticscholar +1 more source
Dealing with Uncertainty for Dissolved Gas Analysis
2011This chapter presents three approaches to tackling uncertainties occurring in transformer condition assessment, including the ER approach, the hybrid FL and ER approach and the BN approach. Firstly, the methodology of transferring a transformer condition assessment problem into an MADM solution under an ER framework is presented.
W. H. Tang, Q. H. Wu
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Dissolved Gas Analysis methods for distribution transformers
2016 13th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology (ECTI-CON), 2016This paper proposes a program development for evaluating a condition of insulating oil of distribution transformer from Dissolved Gas Analysis (DGA) sampling data. The DGA methods such as Key Gas method, Total Dissolved Combustible Gas (TDCG), Dornenburg Ratio method, Rogers Ratio method and Duval Triangle method are applied to assess actual condition ...
Ekkarach Wannapring +2 more
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