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U-AttentionFlow: A Multi-Scale Invertible Attention Network for OLTC Anomaly Detection Using Acoustic Signals. [PDF]
Sensors (Basel)Kim D, Hwang H, Kim H.
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Dissolved Gas Analysis (DGA) of Thermally Aged Blended Transformer Oil
2020 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP), 2020Vegetable based ester oils (VOs) are potential substitute of mineral insulating oils (MOs) in transformers due to their enhanced dielectric properties and better biodegradability. Retro filling of operating transformers originally filled with MO by VO is a real possibility, resulting to a mixture of VO and MO, known as the blended oils (BOs).
Manas Chakraborty +2 more
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Proposals for an improvement in transformer diagnosis using dissolved gas analysis (DGA)
IEEE Electrical Insulation Magazine, 1995The diagnosis of oil-immersed transformers using the dissolved gas analysis (DGA) technique has been well accepted and widely used. IEC Publication 599 touches on the diagnosis of faults involving paper insulation based on the ratio of CO/sub 2//CO. It states that a fault involving paper insulation is probable when the CO/sub 2//CO ratio is 3 or lower;
H. Kan, T. Miyamoto
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2020 4rd International Conference on Electrical, Telecommunication and Computer Engineering (ELTICOM), 2020
In an electric power system, a power transformer is one of the most critical equipment and cannot be separated from possible abnormal conditions due to fault. Dissolved Gas Analysis (DGA) is a reliable technique for detecting the presence of a fault condition that just occurred in oil immersed transformer.
H. Syafruddin, Haryoto Prasetyo Nugroho
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In an electric power system, a power transformer is one of the most critical equipment and cannot be separated from possible abnormal conditions due to fault. Dissolved Gas Analysis (DGA) is a reliable technique for detecting the presence of a fault condition that just occurred in oil immersed transformer.
H. Syafruddin, Haryoto Prasetyo Nugroho
exaly +3 more sources
Fault gas generation in ester based transformer fluids and dissolved gas analysis (DGA)
2008 International Conference on Condition Monitoring and Diagnosis, 2008Environmental concern, safety and sustainability of oil supply are the driving forces behind research into alternative dielectric fluids to mineral oil. Natural and synthetic esters, as the alternative fluids, need to be assessed under thermal and electrical fault conditions, and their performance and likely impact on the established diagnostic ...
Zhongdong Wang, Jie Dai, Ian Cotton
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Evaluation of distribution network transformer dissolved gas analysis (DGA) data
PES T&D 2012, 2012IEEE Standard C57.104-1991 IEEE Guide for the Interpretation of Gases Generated in Oil-Immersed Transformer outlines the guidelines and procedures applicable to large power transformers. This paper describes how Consolidated Edison applied this standard to underground network distribution transformers.
K. P. Oehlmann, L. Mao
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2010 IEEE International Symposium on Electrical Insulation, 2010
San Diego Gas & Electric (SDG&E) has committed to the construction of a comprehensive Transmission and Distribution Substation Condition Based Maintenance (CBM) project. The ultimate objective of this project is to extend the useful life and make greater utilization of its Transmission and Distribution Substation Assets.
Terry Snow, Martin McLarnon
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San Diego Gas & Electric (SDG&E) has committed to the construction of a comprehensive Transmission and Distribution Substation Condition Based Maintenance (CBM) project. The ultimate objective of this project is to extend the useful life and make greater utilization of its Transmission and Distribution Substation Assets.
Terry Snow, Martin McLarnon
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Understanding Dissolved Gas Analysis (DGA) techniques and interpretations
2016 IEEE/PES Transmission and Distribution Conference and Exposition (T&D), 2016The use of Dissolved Gas Analysis (DGA) as a method for determining the types of pending or occurring faults within power transformers has been in practice for many years. It has been proven that the generation of certain gases within a transformer is an excellent indicator that a failure is pending. DGA techniques have become so sensitive and accurate
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Dissolved gas analysis (DGA) of mineral oil under thermal faults with tube heating method
2017 IEEE 19th International Conference on Dielectric Liquids (ICDL), 2017Dissolved Gas Analysis (DGA) is one of the most effective methods in condition monitoring and fault diagnosis of oil immersed transformers. To facilitate the DGA data interpretation, investigation of fault gas generation under laboratory simulated faults using immersed heating method is often conducted.
Zhongdong Wang, Gordon Wilson
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Dissolved gas analysis (DGA) of natural ester insulating fluids with different chemical compositions
IEEE Transactions on Dielectrics and Electrical Insulation, 2014This study presents experimental results of the application of the dissolved gas-inoil analysis (DGA) technique to natural ester insulating fluids. The investigations covered two common types of transformer faults, discharge and overheating, and four different commercial insulating oils, one mineral and three natural esters: Biovolt A (from corn oil ...
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