Study of the Impregnation of Power-Transformer Cellulosic Materials With Dielectric Ester Oils
The application of alternative dielectric oils as esters in power transformers is hindered by the lack of knowledge regarding their properties and respecting which are the best techniques to ensure their proper performance. In this sense one of the fields needing an impulse is the impregnation proce...
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IEEE
2021-01-01
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| Series: | IEEE Access |
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| Online Access: | https://ieeexplore.ieee.org/document/9528420/ |
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doaj-db6c3fcce3c74afe9b6bb25c08cb2f6a2021-09-14T23:00:26ZengIEEEIEEE Access2169-35362021-01-01912402312403210.1109/ACCESS.2021.31098679528420Study of the Impregnation of Power-Transformer Cellulosic Materials With Dielectric Ester OilsJaime Sanz0Oasis Sancibrian1Cristian Olmo2https://orcid.org/0000-0002-0763-8598Cristina Mendez3Alfredo Ortiz4https://orcid.org/0000-0002-7560-2984Carlos J. Renedo5https://orcid.org/0000-0001-9835-6731Department 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 application of alternative dielectric oils as esters in power transformers is hindered by the lack of knowledge regarding their properties and respecting which are the best techniques to ensure their proper performance. In this sense one of the fields needing an impulse is the impregnation processes of transformers cellulosic materials with these alternative oils, currently impregnated in most of the cases with mineral oils. This paper studies the impregnation behavior of eight usual dielectric solids, with two esters and a traditional mineral oil. Empirical equations of the impregnation evolution with time have been obtained, from these the rigid cellulosic materials present in the transformers and the viscosity of the dielectric oils have been identified as the key materials and properties to consider during impregnation. An adaptation of the current impregnation processes to the alternative oils have been proposed by increasing their temperature from ambient temperature up to 61-74°C, depending on the viscosity of the oil used.https://ieeexplore.ieee.org/document/9528420/Dielectricesterimpregnationmodeltransformertemperature |
| collection |
DOAJ |
| language |
English |
| format |
Article |
| sources |
DOAJ |
| author |
Jaime Sanz Oasis Sancibrian Cristian Olmo Cristina Mendez Alfredo Ortiz Carlos J. Renedo |
| spellingShingle |
Jaime Sanz Oasis Sancibrian Cristian Olmo Cristina Mendez Alfredo Ortiz Carlos J. Renedo Study of the Impregnation of Power-Transformer Cellulosic Materials With Dielectric Ester Oils IEEE Access Dielectric ester impregnation model transformer temperature |
| author_facet |
Jaime Sanz Oasis Sancibrian Cristian Olmo Cristina Mendez Alfredo Ortiz Carlos J. Renedo |
| author_sort |
Jaime Sanz |
| title |
Study of the Impregnation of Power-Transformer Cellulosic Materials With Dielectric Ester Oils |
| title_short |
Study of the Impregnation of Power-Transformer Cellulosic Materials With Dielectric Ester Oils |
| title_full |
Study of the Impregnation of Power-Transformer Cellulosic Materials With Dielectric Ester Oils |
| title_fullStr |
Study of the Impregnation of Power-Transformer Cellulosic Materials With Dielectric Ester Oils |
| title_full_unstemmed |
Study of the Impregnation of Power-Transformer Cellulosic Materials With Dielectric Ester Oils |
| title_sort |
study of the impregnation of power-transformer cellulosic materials with dielectric ester oils |
| publisher |
IEEE |
| series |
IEEE Access |
| issn |
2169-3536 |
| publishDate |
2021-01-01 |
| description |
The application of alternative dielectric oils as esters in power transformers is hindered by the lack of knowledge regarding their properties and respecting which are the best techniques to ensure their proper performance. In this sense one of the fields needing an impulse is the impregnation processes of transformers cellulosic materials with these alternative oils, currently impregnated in most of the cases with mineral oils. This paper studies the impregnation behavior of eight usual dielectric solids, with two esters and a traditional mineral oil. Empirical equations of the impregnation evolution with time have been obtained, from these the rigid cellulosic materials present in the transformers and the viscosity of the dielectric oils have been identified as the key materials and properties to consider during impregnation. An adaptation of the current impregnation processes to the alternative oils have been proposed by increasing their temperature from ambient temperature up to 61-74°C, depending on the viscosity of the oil used. |
| topic |
Dielectric ester impregnation model transformer temperature |
| url |
https://ieeexplore.ieee.org/document/9528420/ |
| work_keys_str_mv |
AT jaimesanz studyoftheimpregnationofpowertransformercellulosicmaterialswithdielectricesteroils AT oasissancibrian studyoftheimpregnationofpowertransformercellulosicmaterialswithdielectricesteroils AT cristianolmo studyoftheimpregnationofpowertransformercellulosicmaterialswithdielectricesteroils AT cristinamendez studyoftheimpregnationofpowertransformercellulosicmaterialswithdielectricesteroils AT alfredoortiz studyoftheimpregnationofpowertransformercellulosicmaterialswithdielectricesteroils AT carlosjrenedo studyoftheimpregnationofpowertransformercellulosicmaterialswithdielectricesteroils |
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