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The state of the art of condition monitoring : where do we go from here? [PDF]
, 2013 Catterson, Victoria +5 more
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Tap staggering operation of Autotransformers
2023 AEIT International Annual Conference (AEIT), 2023The decarbonization process presents challenges in voltage control, due to decreased number and power of synchronous generators on the Italian transmission grid and the attendant reduction in reactive power capability.
Luca Buono +6 more
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Tertiary windings in autotransformers
Electrical Engineering, 1961AUTOTRANSFORMERS in power systems are usually Y-connected and commonly have delta-connected tertiary windings. Is the tertiary winding needed? If needed, what should be its size? These are two questions to consider when applying an autotransformer.
O. T. Farry
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Three-Phase/Six-Phase Conversion Autotransformers
IEEE Power Engineering Review, 2002The first commercial demonstration of six-phase transmission, the Goudey-Oakdale three-phase/six-phase project, used two delta wye-grounded three-phase transformers to realize the required phase/voltage conversion. This paper proposes the usage of autotransformers for phase/voltage conversion for the actual three-phase/six-phase systems to be built in ...
X. Chen
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Analysis of Networks with Complex Autotransformers
IEEE Transactions on Power Apparatus and Systems, 1963The open-path-closed-path (mixed junction pair and mesh) relations derived in Part I1 are related by invariant transformations and their inverses to the open-path (junction pair) relations with reference ground and reference different from ground.
H. Happ
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Stochastic Correlation Analysis of the Transformer Oil Indicators in 330 kV Autotransformers
2022 IEEE 3rd KhPI Week on Advanced Technology (KhPIWeek), 2022The paper presents the results of an analysis of the closeness of stochastic relationships between the indicators of transformer oils in 330 kV autotransformers.
O. Shutenko, S. Ponomarenko
semanticscholar +1 more source
Assessment of Life Cycle of Autotransformers
2022 International Conference on Electrical, Computer and Energy Technologies (ICECET), 2022Autotransformers are used in the Romanian National Power Grid, being more efficient than the power transformers. According to the information received from the monitoring systems, a diagnosis is made based on the health index to ensure the most accurate ...
G. Ion +3 more
semanticscholar +1 more source
Electrical Insulation Conference, 2020
This paper reports on the use of thermal and load data to identify large autotransformers that have aged and degraded electrical insulation. The top oil temperature rise and the oil time constant at rated load are used to guarantee that the transformer ...
Atip Doolgindachbaporn +4 more
semanticscholar +1 more source
This paper reports on the use of thermal and load data to identify large autotransformers that have aged and degraded electrical insulation. The top oil temperature rise and the oil time constant at rated load are used to guarantee that the transformer ...
Atip Doolgindachbaporn +4 more
semanticscholar +1 more source
On-Line Quantification of Corrosive Sulphur Content in Large Autotransformers
IEEE transactions on dielectrics and electrical insulation, 2020This paper introduces the use of thin film copper strips as a potential approach for online quantification of corrosive sulphur content in transformer insulating oils.
M. S. A. Khiar +6 more
semanticscholar +1 more source