Natural ester fluids applications in transformers as a sustainable dielectric and coolant

New requirements for a better sustainable energy policy around the world is easy to observe, many projects in sustainable energy are developed wherein the academia works together the authorities and commercial firms such as electrical grid utilities. In distribution transformers one of the suggested...

Full description

Autores:
Hernández Herrera, Hernan
Silva Ortega, Jorge I
Mejia-Taboada, Mario
Diaz Jacome, Alfredo
Torregroza-Rosas, Melissa
Tipo de recurso:
Article of journal
Fecha de publicación:
2019
Institución:
Corporación Universidad de la Costa
Repositorio:
REDICUC - Repositorio CUC
Idioma:
eng
OAI Identifier:
oai:repositorio.cuc.edu.co:11323/7455
Acceso en línea:
https://hdl.handle.net/11323/7455
https://doi.org/10.1063/1.5116976
https://repositorio.cuc.edu.co/
Palabra clave:
Distribution transformers
Mineral Oil
Natural ester fluids
safety operation in power distribution system
Rights
openAccess
License
Attribution-NonCommercial-NoDerivatives 4.0 International
id RCUC2_4a0fc2e30f8161bbd2236e4b706f6204
oai_identifier_str oai:repositorio.cuc.edu.co:11323/7455
network_acronym_str RCUC2
network_name_str REDICUC - Repositorio CUC
repository_id_str
dc.title.spa.fl_str_mv Natural ester fluids applications in transformers as a sustainable dielectric and coolant
title Natural ester fluids applications in transformers as a sustainable dielectric and coolant
spellingShingle Natural ester fluids applications in transformers as a sustainable dielectric and coolant
Distribution transformers
Mineral Oil
Natural ester fluids
safety operation in power distribution system
title_short Natural ester fluids applications in transformers as a sustainable dielectric and coolant
title_full Natural ester fluids applications in transformers as a sustainable dielectric and coolant
title_fullStr Natural ester fluids applications in transformers as a sustainable dielectric and coolant
title_full_unstemmed Natural ester fluids applications in transformers as a sustainable dielectric and coolant
title_sort Natural ester fluids applications in transformers as a sustainable dielectric and coolant
dc.creator.fl_str_mv Hernández Herrera, Hernan
Silva Ortega, Jorge I
Mejia-Taboada, Mario
Diaz Jacome, Alfredo
Torregroza-Rosas, Melissa
dc.contributor.author.spa.fl_str_mv Hernández Herrera, Hernan
Silva Ortega, Jorge I
Mejia-Taboada, Mario
Diaz Jacome, Alfredo
Torregroza-Rosas, Melissa
dc.subject.spa.fl_str_mv Distribution transformers
Mineral Oil
Natural ester fluids
safety operation in power distribution system
topic Distribution transformers
Mineral Oil
Natural ester fluids
safety operation in power distribution system
description New requirements for a better sustainable energy policy around the world is easy to observe, many projects in sustainable energy are developed wherein the academia works together the authorities and commercial firms such as electrical grid utilities. In distribution transformers one of the suggested solutions is to replace mineral oils used as dielectric and coolant for natural ester fluids, they provide improved technical properties making them a safe substitute of mineral oil. Natural esters are based on clean technology in order to guarantee requirements from utilities. The main goal of the present paper is to present a technical-economic analysis obtained from five years of applications of oil-immersed transformers using natural ester fluids in Colombia. The methodology considers forty-four oil-immersed distribution Transformers, a half use mineral oil and the other side use natural ester, operating under the same load regime. Results evidenced the feasibility of implementing this technology because the costs are very similar and the reduction of risks and environmental impact is considerable. © 2019 Author(s).
publishDate 2019
dc.date.issued.none.fl_str_mv 2019
dc.date.accessioned.none.fl_str_mv 2020-11-24T16:25:15Z
dc.date.available.none.fl_str_mv 2020-11-24T16:25:15Z
dc.type.spa.fl_str_mv Artículo de revista
dc.type.coar.fl_str_mv http://purl.org/coar/resource_type/c_2df8fbb1
dc.type.coar.spa.fl_str_mv http://purl.org/coar/resource_type/c_6501
dc.type.content.spa.fl_str_mv Text
dc.type.driver.spa.fl_str_mv info:eu-repo/semantics/article
dc.type.redcol.spa.fl_str_mv http://purl.org/redcol/resource_type/ART
dc.type.version.spa.fl_str_mv info:eu-repo/semantics/acceptedVersion
format http://purl.org/coar/resource_type/c_6501
status_str acceptedVersion
dc.identifier.uri.spa.fl_str_mv https://hdl.handle.net/11323/7455
dc.identifier.doi.spa.fl_str_mv https://doi.org/10.1063/1.5116976
dc.identifier.instname.spa.fl_str_mv Corporación Universidad de la Costa
dc.identifier.reponame.spa.fl_str_mv REDICUC - Repositorio CUC
dc.identifier.repourl.spa.fl_str_mv https://repositorio.cuc.edu.co/
url https://hdl.handle.net/11323/7455
https://doi.org/10.1063/1.5116976
https://repositorio.cuc.edu.co/
identifier_str_mv Corporación Universidad de la Costa
REDICUC - Repositorio CUC
dc.language.iso.none.fl_str_mv eng
language eng
dc.relation.references.spa.fl_str_mv 1.Ab Ghani, S., Muhamad, N. A., Noorden, Z. A., Zainuddin, H., Abu Bakar, N., & Talib, M. A., “Methods for improving the workability of natural ester insulating oils in power transformer applications: A review”. Electric Power Systems Research. 163, 655–667, (2018). https://doi.org/10.1016/j.epsr.2017.10.008
2.Delgado, F., Fernandez, I., Ortiz, F., Renedo, C., Ortiz, A., and Carcedo, J., “Thermal analysis of transformers insulation based on vegetable esters”. In 33rd Electrical Insulation Conference, EIC 2015, pp. 606–609. (2015).
3.Mcshane, P., “Vegetable-Oil-Based Dielectric Coolants. IEEE Industry” Applications Magazine, 8(3), 34–41. (2002). https://doi.org/10.1109/2943.999611,
4.Rycroft, M., “Vegetable oil as insulating fluid for transformers”. Energize, 37–40. (2014).
5.Asano, Roberto, and Stephane A. Page. “Reducing environmental impact and improving safety and performance of power transformers with natural ester dielectric insulating fluids.” IEEE Transactions on Industry Applications 50 (1), 134–141. (2014) https://doi.org/10.1109/TIA.2013.2269532
6.Ciuriuc, A., Vihacencu, M. S., Dumitran, L. M., and Notingher, P. V., “Comparative Study on Power Transformers Vegetable and Mineral Oil Ageing”. 2012 International Conference on Applied and Theoretical Electricity (ICATE). IEEE, (2012).
7.Sagastume Gutiérrez, A., Cabello Eras, J. J., Sousa Santos, V., Hernández Herrera, H., Hens, L., and Vandecasteele, C. “Electricity management in the production of lead-acid batteries: The industrial case of a production plant in Colombia”. Journal of Cleaner Production, 198, 1443–1458. (2018). https://doi.org/10.1016/j.jclepro.2018.07.105
8.CIGRE working group A2-35., “Experiences in Service with New Insulating Liquids”. United Kingdom: Zhongdong Wang (UK). (2010).
9.EPA., OPPTS 835.3100. “Aerobic Aquatic Biodegradation. Fate, Transport and Transformation” Test Guidelines. (Thomas A. Edison Technical Center, Ed.). Franksville (USA): Cooper Power Systems. (1998).
10.Hopkinson, P., “Progress Report On Natural Esters For Distribution And Power Transformers”. IEEE Power and Energy Society General Meeting IEEE, (2009).
11.Li, J., Zhang, Z., Grzybowski, S., and Liu, Y., “Characteristics of Moisture Diffusion in Vegetable Oil-paper Insulation”, EEE Transactions on Dielectrics and Electrical Insulation 19 (5), 1650–1656. (2012) https://doi.org/10.1109/TDEI.2012.6311512
12.Bashi, S. M., Abdullahi, U. U., Yunus, R., and Nordin, A., “Use of Natural Vegetable Oils as Alternative Dielectric Transformer Coolants”. Journal of the Institution of Engineers, Malaysia, 67(2), 4–9. (2006).
13.Murphy, J. R., Member, S., and Graham, J., “Distribution Utility Experience with Natural Ester Dielectric Coolants”, 2009 IEEE Power & Energy Society General Meeting. IEEE, (2009).
14.Mcshane, C. P., “Natural and Synthetic Ester Dielectric Fluids : Their Relative Environmental, Fire Safety, and Electrical Performance”. In 1999 IEEE Industrial and Commercial Power Systems Technical Conference pp. 1–8. (1999).
15.Navas, D., Cadavid-Ramírez, H., and Echeverry-Ibarra, D. F. “Aplicación del aceite dieléctrico de origen vegetal en transformadores eléctricos”. Ingeniería y Universidad, 16(1), 201–223. (2012)
16.Rebolledo, L. and, Guissela. A., “Evaluación de la viabilidad técnica y económica de la utilización del aceite dieléctrico vegetal como sustituyente del aceite dieléctrico mineral en transformadores de distribución nuevos y usados en las empresas municipales de Cali. BS thesis, Universidad Autónoma de Occidente.
17.Silva-Ortega, J. I., Candelo-Becerra, J. E., Umaña-Ibañez, S. F., Mejia-Taboada, M. A., and Palacio-Bonill, A. R., “Power Distribution Transformers using Natural Ester Fluids as Dielectric and Coolant”. Inge Cuc, 12(2), 79–85. (2016). https://doi.org/10.17981/ingecuc.12.2.2016.08
18.B Tokunaga, Junko, et al. “Palm fatty acid ester as biodegradable dielectric fluid in transformers: a review.” IEEE Electrical Insulation Magazine 35.2 34–46. (2019): https://doi.org/10.1109/MEI.2019.8636104
19.IEC, IEC 62770. Fluids for electrotechnical applications – Unused natural esters for transformers and similar electrical equipment. Geneva, Switzerland, 2013, p. 38.
20.ASTM. D6871-03: Standard Specification for Natural (Vegetable Oil) Ester Fluids Used in Electrical Apparatus, 10ASTM 14–16, 2003.
21.Arief, Y. Z., Ahmad, M. H., Lau, K. Y., and Oil, A. T., “A Comparative Study on the Effect of Electrical Ageing on Electrical Properties of Palm Fatty Acid Ester (PFAE) and FR3 as Dielectric Materials”, IEEE International Conference on Power and Energy (PECon). IEEE, 128–133. 2014.
22.Cargill. EnvirotempTM FR3TM Fluid. R2020 Reference Data. (2013).
23.GlobalTox International Consultants. Final Report: Acute Trout Toxicity Testing for Two Envirotemp FR3 Formulations, (2). (1999).
24.Aluyor, E. O., Obahiagbon, K. O., and Ori-jesu, M., “Biodegradation of vegetable oils : A review”. Scientific Research and Essays, 4(6), 543–548. (2009).
25.Fofana, I., 2013. “50 Years in the Development of Insulating Liquids”, IEEE Electrical Insulation Magazine 29(5), 13–25, (2013). https://doi.org/10.1109/MEI.2013.6585853
26.Brettis. “Aceites Para Transformadores”, Modulo 8. Retrieved from http://www.brettis.com/Tutorial/08Transformadores.pdf. (2013).
27.Singha, Santanu, et al. “Comparative aging characteristics between a high oleic natural ester dielectric liquid and mineral oil.” IEEE Transactions on Dielectrics and Electrical Insulation 21.1 (2014): 149–158. https://doi.org/10.1109/TDEI.2013.003713 Villardi, H. GD., Leal, M. F., Andrade, P. H. D. A., Fernando, L. P., and Salgado, A. M. “Study of the Production of Ethyl Esters of Soybean Industry Using Waste Acid with and without Catalyst”. Chemical EngineeringTransactions, 57, 163–168. (2017).
28.Chistyakov, A. V., Tsodikov, M. V., Zharova, P. A., Kriventsov, V. V., Corbetta, M., and Manenti, F. “The direct hydrodeoxygenation of vegetable oil over Pt-Sn/Al2O3 catalysts”. Chemical Engineering Transactions, 57, 871–876. (2017).
29.Congreso de Colombia. Ley N° 1715 Del 13 De Mayo De 2014,2014, Colombia. Retrieved from http://www.upme.gov.co/Normatividad/Nacional/2014/LEY_1715_2014.pdf
30.UPME. Res. 0536 - 2012 2012, Colombia. Retrieved from http://www1.upme.gov.co/Documents/Normatividad/Resoluciones/RES._0563.pdf.
31.Arfaoui, A., Polidori, G., Taiar, R., and Popa, C., “Infrared Thermography in Sports Activity”. In Infrared Thermography, 141–168. (2012).
32.ASTM. D3487-16: Standard Specification for Mineral Insulating Oil Used in Electrical Apparatus, 2016.
dc.rights.spa.fl_str_mv Attribution-NonCommercial-NoDerivatives 4.0 International
dc.rights.uri.spa.fl_str_mv http://creativecommons.org/licenses/by-nc-nd/4.0/
dc.rights.accessrights.spa.fl_str_mv info:eu-repo/semantics/openAccess
dc.rights.coar.spa.fl_str_mv http://purl.org/coar/access_right/c_abf2
rights_invalid_str_mv Attribution-NonCommercial-NoDerivatives 4.0 International
http://creativecommons.org/licenses/by-nc-nd/4.0/
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.format.mimetype.spa.fl_str_mv application/pdf
dc.publisher.spa.fl_str_mv Corporación Universidad de la Costa
dc.source.spa.fl_str_mv International Conference on Data Mining and Big Data
institution Corporación Universidad de la Costa
bitstream.url.fl_str_mv https://repositorio.cuc.edu.co/bitstreams/32762a51-9bc9-4763-be47-77a9caea39a0/download
https://repositorio.cuc.edu.co/bitstreams/e07c5bfd-4297-4703-bd3f-65e7da83336e/download
https://repositorio.cuc.edu.co/bitstreams/849f9e4f-e26c-42a6-b400-08a406306592/download
https://repositorio.cuc.edu.co/bitstreams/70a9d150-fb80-4d96-a1b3-fb20b1e26263/download
https://repositorio.cuc.edu.co/bitstreams/734480db-2031-4742-97aa-425a91174d26/download
bitstream.checksum.fl_str_mv e30e9215131d99561d40d6b0abbe9bad
f2c88db43bf0a4e63454892b014e8110
4460e5956bc1d1639be9ae6146a50347
2c7da9a78ed3cb5a9ea91b049c2fedd0
10c4ce76b62c4b17c20083525e6842af
bitstream.checksumAlgorithm.fl_str_mv MD5
MD5
MD5
MD5
MD5
repository.name.fl_str_mv Repositorio de la Universidad de la Costa CUC
repository.mail.fl_str_mv repdigital@cuc.edu.co
_version_ 1834108695719444480
spelling Hernández Herrera, HernanSilva Ortega, Jorge IMejia-Taboada, MarioDiaz Jacome, AlfredoTorregroza-Rosas, Melissa2020-11-24T16:25:15Z2020-11-24T16:25:15Z2019https://hdl.handle.net/11323/7455https://doi.org/10.1063/1.5116976Corporación Universidad de la CostaREDICUC - Repositorio CUChttps://repositorio.cuc.edu.co/New requirements for a better sustainable energy policy around the world is easy to observe, many projects in sustainable energy are developed wherein the academia works together the authorities and commercial firms such as electrical grid utilities. In distribution transformers one of the suggested solutions is to replace mineral oils used as dielectric and coolant for natural ester fluids, they provide improved technical properties making them a safe substitute of mineral oil. Natural esters are based on clean technology in order to guarantee requirements from utilities. The main goal of the present paper is to present a technical-economic analysis obtained from five years of applications of oil-immersed transformers using natural ester fluids in Colombia. The methodology considers forty-four oil-immersed distribution Transformers, a half use mineral oil and the other side use natural ester, operating under the same load regime. Results evidenced the feasibility of implementing this technology because the costs are very similar and the reduction of risks and environmental impact is considerable. © 2019 Author(s).Hernández Herrera, Hernan-will be generated-orcid-0000-0002-6035-245X-600Silva Ortega, Jorge I-will be generated-orcid-0000-0002-7813-0142-600Mejia-Taboada, MarioDiaz Jacome, Alfredo-will be generated-orcid-0000-0003-0540-797X-600Torregroza-Rosas, Melissaapplication/pdfengCorporación Universidad de la CostaAttribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccesshttp://purl.org/coar/access_right/c_abf2International Conference on Data Mining and Big DataDistribution transformersMineral OilNatural ester fluidssafety operation in power distribution systemNatural ester fluids applications in transformers as a sustainable dielectric and coolantArtículo de revistahttp://purl.org/coar/resource_type/c_6501http://purl.org/coar/resource_type/c_2df8fbb1Textinfo:eu-repo/semantics/articlehttp://purl.org/redcol/resource_type/ARTinfo:eu-repo/semantics/acceptedVersion1.Ab Ghani, S., Muhamad, N. A., Noorden, Z. A., Zainuddin, H., Abu Bakar, N., & Talib, M. A., “Methods for improving the workability of natural ester insulating oils in power transformer applications: A review”. Electric Power Systems Research. 163, 655–667, (2018). https://doi.org/10.1016/j.epsr.2017.10.0082.Delgado, F., Fernandez, I., Ortiz, F., Renedo, C., Ortiz, A., and Carcedo, J., “Thermal analysis of transformers insulation based on vegetable esters”. In 33rd Electrical Insulation Conference, EIC 2015, pp. 606–609. (2015).3.Mcshane, P., “Vegetable-Oil-Based Dielectric Coolants. IEEE Industry” Applications Magazine, 8(3), 34–41. (2002). https://doi.org/10.1109/2943.999611,4.Rycroft, M., “Vegetable oil as insulating fluid for transformers”. Energize, 37–40. (2014).5.Asano, Roberto, and Stephane A. Page. “Reducing environmental impact and improving safety and performance of power transformers with natural ester dielectric insulating fluids.” IEEE Transactions on Industry Applications 50 (1), 134–141. (2014) https://doi.org/10.1109/TIA.2013.22695326.Ciuriuc, A., Vihacencu, M. S., Dumitran, L. M., and Notingher, P. V., “Comparative Study on Power Transformers Vegetable and Mineral Oil Ageing”. 2012 International Conference on Applied and Theoretical Electricity (ICATE). IEEE, (2012).7.Sagastume Gutiérrez, A., Cabello Eras, J. J., Sousa Santos, V., Hernández Herrera, H., Hens, L., and Vandecasteele, C. “Electricity management in the production of lead-acid batteries: The industrial case of a production plant in Colombia”. Journal of Cleaner Production, 198, 1443–1458. (2018). https://doi.org/10.1016/j.jclepro.2018.07.1058.CIGRE working group A2-35., “Experiences in Service with New Insulating Liquids”. United Kingdom: Zhongdong Wang (UK). (2010).9.EPA., OPPTS 835.3100. “Aerobic Aquatic Biodegradation. Fate, Transport and Transformation” Test Guidelines. (Thomas A. Edison Technical Center, Ed.). Franksville (USA): Cooper Power Systems. (1998).10.Hopkinson, P., “Progress Report On Natural Esters For Distribution And Power Transformers”. IEEE Power and Energy Society General Meeting IEEE, (2009).11.Li, J., Zhang, Z., Grzybowski, S., and Liu, Y., “Characteristics of Moisture Diffusion in Vegetable Oil-paper Insulation”, EEE Transactions on Dielectrics and Electrical Insulation 19 (5), 1650–1656. (2012) https://doi.org/10.1109/TDEI.2012.631151212.Bashi, S. M., Abdullahi, U. U., Yunus, R., and Nordin, A., “Use of Natural Vegetable Oils as Alternative Dielectric Transformer Coolants”. Journal of the Institution of Engineers, Malaysia, 67(2), 4–9. (2006).13.Murphy, J. R., Member, S., and Graham, J., “Distribution Utility Experience with Natural Ester Dielectric Coolants”, 2009 IEEE Power & Energy Society General Meeting. IEEE, (2009).14.Mcshane, C. P., “Natural and Synthetic Ester Dielectric Fluids : Their Relative Environmental, Fire Safety, and Electrical Performance”. In 1999 IEEE Industrial and Commercial Power Systems Technical Conference pp. 1–8. (1999).15.Navas, D., Cadavid-Ramírez, H., and Echeverry-Ibarra, D. F. “Aplicación del aceite dieléctrico de origen vegetal en transformadores eléctricos”. Ingeniería y Universidad, 16(1), 201–223. (2012)16.Rebolledo, L. and, Guissela. A., “Evaluación de la viabilidad técnica y económica de la utilización del aceite dieléctrico vegetal como sustituyente del aceite dieléctrico mineral en transformadores de distribución nuevos y usados en las empresas municipales de Cali. BS thesis, Universidad Autónoma de Occidente.17.Silva-Ortega, J. I., Candelo-Becerra, J. E., Umaña-Ibañez, S. F., Mejia-Taboada, M. A., and Palacio-Bonill, A. R., “Power Distribution Transformers using Natural Ester Fluids as Dielectric and Coolant”. Inge Cuc, 12(2), 79–85. (2016). https://doi.org/10.17981/ingecuc.12.2.2016.0818.B Tokunaga, Junko, et al. “Palm fatty acid ester as biodegradable dielectric fluid in transformers: a review.” IEEE Electrical Insulation Magazine 35.2 34–46. (2019): https://doi.org/10.1109/MEI.2019.863610419.IEC, IEC 62770. Fluids for electrotechnical applications – Unused natural esters for transformers and similar electrical equipment. Geneva, Switzerland, 2013, p. 38.20.ASTM. D6871-03: Standard Specification for Natural (Vegetable Oil) Ester Fluids Used in Electrical Apparatus, 10ASTM 14–16, 2003.21.Arief, Y. Z., Ahmad, M. H., Lau, K. Y., and Oil, A. T., “A Comparative Study on the Effect of Electrical Ageing on Electrical Properties of Palm Fatty Acid Ester (PFAE) and FR3 as Dielectric Materials”, IEEE International Conference on Power and Energy (PECon). IEEE, 128–133. 2014.22.Cargill. EnvirotempTM FR3TM Fluid. R2020 Reference Data. (2013).23.GlobalTox International Consultants. Final Report: Acute Trout Toxicity Testing for Two Envirotemp FR3 Formulations, (2). (1999).24.Aluyor, E. O., Obahiagbon, K. O., and Ori-jesu, M., “Biodegradation of vegetable oils : A review”. Scientific Research and Essays, 4(6), 543–548. (2009).25.Fofana, I., 2013. “50 Years in the Development of Insulating Liquids”, IEEE Electrical Insulation Magazine 29(5), 13–25, (2013). https://doi.org/10.1109/MEI.2013.658585326.Brettis. “Aceites Para Transformadores”, Modulo 8. Retrieved from http://www.brettis.com/Tutorial/08Transformadores.pdf. (2013).27.Singha, Santanu, et al. “Comparative aging characteristics between a high oleic natural ester dielectric liquid and mineral oil.” IEEE Transactions on Dielectrics and Electrical Insulation 21.1 (2014): 149–158. https://doi.org/10.1109/TDEI.2013.003713 Villardi, H. GD., Leal, M. F., Andrade, P. H. D. A., Fernando, L. P., and Salgado, A. M. “Study of the Production of Ethyl Esters of Soybean Industry Using Waste Acid with and without Catalyst”. Chemical EngineeringTransactions, 57, 163–168. (2017).28.Chistyakov, A. V., Tsodikov, M. V., Zharova, P. A., Kriventsov, V. V., Corbetta, M., and Manenti, F. “The direct hydrodeoxygenation of vegetable oil over Pt-Sn/Al2O3 catalysts”. Chemical Engineering Transactions, 57, 871–876. (2017).29.Congreso de Colombia. Ley N° 1715 Del 13 De Mayo De 2014,2014, Colombia. Retrieved from http://www.upme.gov.co/Normatividad/Nacional/2014/LEY_1715_2014.pdf30.UPME. Res. 0536 - 2012 2012, Colombia. Retrieved from http://www1.upme.gov.co/Documents/Normatividad/Resoluciones/RES._0563.pdf.31.Arfaoui, A., Polidori, G., Taiar, R., and Popa, C., “Infrared Thermography in Sports Activity”. In Infrared Thermography, 141–168. (2012).32.ASTM. D3487-16: Standard Specification for Mineral Insulating Oil Used in Electrical Apparatus, 2016.PublicationLICENSElicense.txtlicense.txttext/plain; charset=utf-83196https://repositorio.cuc.edu.co/bitstreams/32762a51-9bc9-4763-be47-77a9caea39a0/downloade30e9215131d99561d40d6b0abbe9badMD53ORIGINALNatural ester fluids applications in transformers as a sustainable dielectric and coolant.pdfNatural ester fluids applications in transformers as a sustainable dielectric and coolant.pdfapplication/pdf93146https://repositorio.cuc.edu.co/bitstreams/e07c5bfd-4297-4703-bd3f-65e7da83336e/downloadf2c88db43bf0a4e63454892b014e8110MD51CC-LICENSElicense_rdflicense_rdfapplication/rdf+xml; charset=utf-8805https://repositorio.cuc.edu.co/bitstreams/849f9e4f-e26c-42a6-b400-08a406306592/download4460e5956bc1d1639be9ae6146a50347MD52THUMBNAILNatural ester fluids applications in transformers as a sustainable dielectric and coolant.pdf.jpgNatural ester fluids applications in transformers as a sustainable dielectric and coolant.pdf.jpgimage/jpeg39636https://repositorio.cuc.edu.co/bitstreams/70a9d150-fb80-4d96-a1b3-fb20b1e26263/download2c7da9a78ed3cb5a9ea91b049c2fedd0MD54TEXTNatural ester fluids applications in transformers as a sustainable dielectric and coolant.pdf.txtNatural ester fluids applications in transformers as a sustainable dielectric and coolant.pdf.txttext/plain1537https://repositorio.cuc.edu.co/bitstreams/734480db-2031-4742-97aa-425a91174d26/download10c4ce76b62c4b17c20083525e6842afMD5511323/7455oai:repositorio.cuc.edu.co:11323/74552024-09-17 14:19:42.713http://creativecommons.org/licenses/by-nc-nd/4.0/Attribution-NonCommercial-NoDerivatives 4.0 Internationalopen.accesshttps://repositorio.cuc.edu.coRepositorio de la Universidad de la Costa CUCrepdigital@cuc.edu.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