Numerical Simulation of Natural Convection in the Power Transformer
- Resource Type
- Conference
- Authors
- Smolyanov, Ivan; Shmakov, Evgeniy; Lapin, Andrei
- Source
- 2023 International Russian Automation Conference (RusAutoCon) Automation Conference (RusAutoCon), 2023 International Russian. :936-941 Sep, 2023
- Subject
- Computing and Processing
Robotics and Control Systems
Temperature
Cooling
Oils
Oil insulation
Numerical simulation
Hydrodynamics
Numerical models
natural convection
power transformer
oil-immersed transformer
CFD
heat transfer
- Language
- ISSN
- 2836-614X
Numerical analysis of natural convection in a three-phase power transformer filled with industrial oil is considered. The paper presents a comparative analysis of the temperature and hydrodynamic fields when reducing a load factor by three different approaches to the simulation of the transformer tank area. The initial conditions of the velocity, pressure, and temperature fields are the results of calculating a stationary study of the convection in a power transformer. It is shown that considering the computational domain as a one-phase case significantly distorts the results. The appropriate way to simulate a cooling system is to use the inlet-outlet boundary conditions calibrated by physical experiments or numerical simulations. All the calculations were performed using the k – ϵ turbulence model implemented in Comsol Multiphysics. The presented results are of particular interest for the power transformer oil condition forecasting by numerical simulation tools.