Multi-Physics Modeling and Simulation of Oil-Immersed Power Transformers Based on 3D Finite Element Analysis and Finite Volume Method

Ilka, Reza; He, JiangBiao; Yin, Wen; Contreras, José Enciso; Cavazos, Carlos G.

doi:10.1109/ias54023.2022.9939992

Cited by 1 publication

(2 citation statements)

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“…When using this method, special attention must be paid to the type of used mesh. In [47], a similar problem of thermal convection, considered in the finite element section in [45], is solved using the finite volume method on a mesh, consisting of about 10 6 nodes and 2.8 × 10 6 elements. In [48], the authors consider, how the use of different meshes affects the calculated values.…”

Section: Finite Volume Methodsmentioning

confidence: 99%

“…In work [47], the multi-physics modeling of an oil-immersed power transformer was conducted using the finite element method by Ansys Maxwell and the finite volume method realized in Ansys Fluent for the three-dimensional case. The authors utilized finite element analysis to calculate the transformer winding losses and employed the finite volume method to build a thermal model for forecasting the hot-spot temperature.…”

Section: Comparison Of Considered Methodsmentioning

confidence: 99%

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Review of Modeling Approaches for Conjugate Heat Transfer Processes in Oil-Immersed Transformers

Smolyanov,

Shmakov,

Butusov

et al. 2024

Computation

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This review addresses the modeling approaches for heat transfer processes in oil-immersed transformer. Electromagnetic, thermal, and hydrodynamic thermal fields are identified as the most critical aspects in describing the state of the transformer. The paper compares the implementation complexity, calculation time, and details of the results for different approaches to creating a mathematical model, such as circuit-based models and finite element and finite volume methods. Examples of successful model implementation are provided, along with the features of oil-immersed transformer modeling. In addition, the review considers the strengths and limitations of the considered models in relation to creating a digital twin of a transformer. The review concludes that it is not feasible to create a universal model that accounts for all the features of physical processes in an oil-immersed transformer, operates in real time for a digital twin, and provides the required accuracy at the same time. The conducted research shows that joint modeling of electromagnetic and thermal processes, reducing the dimensionality of models, provides the most comprehensive solution to the problem.

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Section: Finite Volume Methodsmentioning

confidence: 99%

Section: Comparison Of Considered Methodsmentioning

confidence: 99%