@conference{10902/27941,
year = {2022},
url = {https://hdl.handle.net/10902/27941},
abstract = {The use of biodegradable dielectric liquids in power transformers has several advantages, such as increased fire safety or their biodegradability in the event of a leak in the tank. However, they also have a higher viscosity that does not benefit their cooling function within these machines. Although there are many references that analyze the transformers hotspot temperature for dynamic loading, there are hardly any references that focus on the dynamic evaluation of the hotspot when the viscosity of the dielectric and cooling fluid changes, with respect to that of the oil of mineral origin. In this work, the algorithms proposed in the bibliography will be combined with the use of computational fluid dynamics software ANSYSFLUENT, which uses the finite volumes method to solve the equations that govern fluid flow. The software tool will be used to calculate the temperatures of a 100MVA transformer winding. Once these temperatures have been calculated, they can be entered into the hotspot temperature estimation algorithm when the machine's load regime is varied. This analysis will be repeated using dielectric liquids with different thermal characteristics. Transformer fleet managers may use the results of this study in order to adapt their procedures when the machines they manage do not have conventional mineral oil inside},
organization = {Part of the work was performed during secondments between University of Valle and the Universidad de Cantabria executed in the framework of the BIOTRAFO project “Raising knowledge and developing technology for the design and deployment of high performance power transformers immersed in biodegradable fluids”, H2020-MSCARISE-2018-823969, 2019–21. This project has received funding from the European Union's Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie grant agreement No 823969. Also, we acknowledge the support of the Spanish Ministry of Science and Innovation by means of the National Research Project Asset management of biodegradable-fluid-based transformers (PID2019-107126RB-C22/AEI/10.13039/501100011033). The authors also want to thank the grant received from the Call for the Development of the 2020 Industrial Doctorate Program of the Universidad de Cantabria.},
publisher = {Institute of Electrical and Electronics Engineers, Inc.},
publisher = {IEEE 21st International Conference on Dielectric Liquids (ICDL), Sevilla, 2022, 244-247},
title = {Effect of the thermal characteristics of dielectric fluids on the loading capacity of a power transformer},
author = {Matia González, David and Santisteban Díaz, Agustín and Ortiz Fernández, Félix and Quintanilla Cavia, Pedro José and García Gómez, Diego Fernando and Ortiz Fernández, Alfredo},
}