Use of Alternative Fluids in Very High-Power Transformers: Experimental and Numerical Thermal Studies
The very high-power transformer lifespan depends mainly on the temperature that cellulose insulation reaches during its operation. Traditionally, its cooling has been carried out using mineral oil as coolant. Nowadays, alternative ester-based liquids are under study as substitutes due to their bette...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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IEEE
2020-01-01
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| Series: | IEEE Access |
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| Online Access: | https://ieeexplore.ieee.org/document/9257425/ |
| _version_ | 1819276449522122752 |
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| author | Ramazan Altay Agustin Santisteban Cristian Olmo Carlos J. Renedo Alfredo Ortiz Fernandez Felix Ortiz Fernando Delgado |
| author_facet | Ramazan Altay Agustin Santisteban Cristian Olmo Carlos J. Renedo Alfredo Ortiz Fernandez Felix Ortiz Fernando Delgado |
| author_sort | Ramazan Altay |
| collection | DOAJ |
| description | The very high-power transformer lifespan depends mainly on the temperature that cellulose insulation reaches during its operation. Traditionally, its cooling has been carried out using mineral oil as coolant. Nowadays, alternative ester-based liquids are under study as substitutes due to their better environmental and fire-safety properties. This paper compares the cooling capacity of two ester-based fluids with that of a mineral oil using a 3D numerical model of a 100 MVA low voltage winding of a power transformer with axial cooling system and ONAN cooling mode. Heat-run test results with mineral oil have been used to validate this model. As a first approximation, according to the comparison developed, ester-based fluids could replace mineral oils in this type of transformers when they are going to work in a range of powers close to the rated one. |
| first_indexed | 2024-12-23T23:40:24Z |
| format | Article |
| id | doaj.art-7165dd41f0204688bcda73ede87a256e |
| institution | Directory Open Access Journal |
| issn | 2169-3536 |
| language | English |
| last_indexed | 2024-12-23T23:40:24Z |
| publishDate | 2020-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj.art-7165dd41f0204688bcda73ede87a256e2022-12-21T17:25:41ZengIEEEIEEE Access2169-35362020-01-01820705420706210.1109/ACCESS.2020.30376729257425Use of Alternative Fluids in Very High-Power Transformers: Experimental and Numerical Thermal StudiesRamazan Altay0Agustin Santisteban1https://orcid.org/0000-0002-5053-9595Cristian Olmo2https://orcid.org/0000-0002-0763-8598Carlos J. Renedo3https://orcid.org/0000-0001-9835-6731Alfredo Ortiz Fernandez4https://orcid.org/0000-0002-7560-2984Felix Ortiz5https://orcid.org/0000-0001-8404-1253Fernando Delgado6https://orcid.org/0000-0002-2558-3033Balikesir Elektromekanik Sanayi Tesisleri Anonim Sirketi, Balikesir, TurkeyDepartment of Electrical and Energy Engineering, University of Cantabria, Santander, SpainDepartment of Electrical and Energy Engineering, University of Cantabria, Santander, SpainDepartment of Electrical and Energy Engineering, University of Cantabria, Santander, SpainDepartment of Electrical and Energy Engineering, University of Cantabria, Santander, SpainDepartment of Electrical and Energy Engineering, University of Cantabria, Santander, SpainDepartment of Electrical and Energy Engineering, University of Cantabria, Santander, SpainThe very high-power transformer lifespan depends mainly on the temperature that cellulose insulation reaches during its operation. Traditionally, its cooling has been carried out using mineral oil as coolant. Nowadays, alternative ester-based liquids are under study as substitutes due to their better environmental and fire-safety properties. This paper compares the cooling capacity of two ester-based fluids with that of a mineral oil using a 3D numerical model of a 100 MVA low voltage winding of a power transformer with axial cooling system and ONAN cooling mode. Heat-run test results with mineral oil have been used to validate this model. As a first approximation, according to the comparison developed, ester-based fluids could replace mineral oils in this type of transformers when they are going to work in a range of powers close to the rated one.https://ieeexplore.ieee.org/document/9257425/Computational fluid dynamicsester-based liquidsexperimental setupmineral oilpower transformersthermal modeling |
| spellingShingle | Ramazan Altay Agustin Santisteban Cristian Olmo Carlos J. Renedo Alfredo Ortiz Fernandez Felix Ortiz Fernando Delgado Use of Alternative Fluids in Very High-Power Transformers: Experimental and Numerical Thermal Studies IEEE Access Computational fluid dynamics ester-based liquids experimental setup mineral oil power transformers thermal modeling |
| title | Use of Alternative Fluids in Very High-Power Transformers: Experimental and Numerical Thermal Studies |
| title_full | Use of Alternative Fluids in Very High-Power Transformers: Experimental and Numerical Thermal Studies |
| title_fullStr | Use of Alternative Fluids in Very High-Power Transformers: Experimental and Numerical Thermal Studies |
| title_full_unstemmed | Use of Alternative Fluids in Very High-Power Transformers: Experimental and Numerical Thermal Studies |
| title_short | Use of Alternative Fluids in Very High-Power Transformers: Experimental and Numerical Thermal Studies |
| title_sort | use of alternative fluids in very high power transformers experimental and numerical thermal studies |
| topic | Computational fluid dynamics ester-based liquids experimental setup mineral oil power transformers thermal modeling |
| url | https://ieeexplore.ieee.org/document/9257425/ |
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