[HTML][HTML] Numerical simulation and optimisation design for ventilation and heat dissipation in high-temperature and high-load indoor substations

H Chen, H Zhang, S Wu, Y Liu, H Zhong - Case Studies in Thermal …, 2024 - Elsevier
Under high-temperature and high-load operational conditions, inadequate ventilation and
suboptimal cooling arrangements within indoor substations result in high oil temperatures …

Numerical and experimental thermo-fluid dynamic analysis of a power transformer working in ONAN mode

GR Rodriguez, L Garelli, M Storti, D Granata… - Applied Thermal …, 2017 - Elsevier
This paper presents semi-analytical calculations, computational fluid dynamic simulations
and experimental measurements accomplished on a typical 30 MVA power transformer. An …

Heat transfer enhancement in panel type radiators using delta-wing vortex generators

L Garelli, GR Rodriguez, JJ Dorella, MA Storti - International Journal of …, 2019 - Elsevier
In this paper, a three-dimensional numerical simulation is used to analyze the performance
of delta-wing vortex generators for enhancing the heat exchange in panel type radiators …

HST calculation of a 10 kV oil‐immersed transformer with 3D coupled‐field method

J Ruan, Y Deng, D Huang, C Duan… - IET electric power …, 2020 - Wiley Online Library
Transformer winding hot‐spot temperature (HST) is one of the important factors affecting
transformer oil–paper insulation deterioration. This study presents a three‐dimensional …

Thermal analysis of power transformers under geomagnetically induced current

M Akbari, A Rezaei-Zare - IEEE Transactions on Power …, 2023 - ieeexplore.ieee.org
Temperature distribution in the power transformers is investigated in this study under
Geomagnetically Induced Current (GIC) conditions. Thermal stress can significantly reduce …

A reduced radiator model for simplification of ONAN transformer CFD simulation

S Zhao, Q Liu, M Wilkinson, G Wilson… - IEEE Transactions on …, 2022 - ieeexplore.ieee.org
In this paper, a reduced computational fluid dynamics (CFD) model is proposed for
determining the total heat dissipation and the oil temperature distribution of transformer …

A coupled internal–external flow and conjugate heat transfer simulations and experiments on radiators of a transformer

SB Paramane, W Van der Veken, A Sharma - Applied Thermal Engineering, 2016 - Elsevier
Experimental and numerical studies are reported on radiator–fan assembly, for ONAN (Oil
Natural and Air Natural) and ONAF (Oil Natural and Air Forced) cooling configurations. In …

A numerical study of the effect of a hybrid cooling system on the cooling performance of a large power transformer

YJ Kim, M Jeong, YG Park, MY Ha - Applied Thermal Engineering, 2018 - Elsevier
This study analyzed the conjugate heat transfer and fluid flow of radiators used in a power
transformer to investigate the cooling performance. The flow and temperature distributions …

[HTML][HTML] Thermo-magnetic-fluid dynamics analysis of an ONAN distribution transformer cooled with mineral oil and biodegradable esters

L Garelli, GAR Rodriguez, K Kubiczek, P Lasek… - Thermal Science and …, 2021 - Elsevier
This work introduces a coupled electromagnetic, thermal and fluid flow analysis of an oil-
natural air-natural distribution transformer in order to study the changes in the heat …

Reduced model for the thermo-fluid dynamic analysis of a power transformer radiator working in ONAF mode

L Garelli, GR Rodriguez, M Storti, D Granata… - Applied Thermal …, 2017 - Elsevier
This work introduces an extension of the semi-analytical reduced model presented in Ríos
Rodriguez et al.(2016), with the aim of analyzing the thermo-fluid dynamic behavior of a …