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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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Dissolved gas analysis using evidential reasoning
IEE Proceedings - Science, Measurement and Technology, 2005A novel approach to the analysis and handling of dissolved gas analysis (DGA) data from several traditional methods, namely Roger's Ratio Method, Dornenburg's Ratio Method and the Key Gas Method, is presented. Ideas taken from fuzzy set theory are applied to 'soften' the fault decision boundaries employed by each of the three methods.
K. Spurgeon +4 more
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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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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
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Analysis of Gas-Cap or Dissolved-Gas Drive Reservoirs
Society of Petroleum Engineers Journal, 1961Abstract A numerical method of solving the partial differential equations which describe the one-dimensional displacement of oil by gas has been presented. Possible extension of the method to treat multidimensional flow is discussed, and the limitations of this extension are indicated.
H.L. Stone, A.O. Garder
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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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