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The aim is to develop a simplified model for accurate temperature field calculations in oil-immersed transformers.

April 23, 2026EnergiesOpen Access

A Simplified Temperature Field Calculation Model for Oil-Immersed Transformers Based on the FVM-POD Field–Circuit Coupling Method

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Demonstrates a simplified model for calculating temperature fields in oil-immersed transformers, highlighting improved computational efficiency.

The aim is to develop a simplified model for accurate temperature field calculations in oil-immersed transformers.
Developed a two-dimensional axisymmetric thermal-fluid coupled field model using the finite volume method.
Utilized proper orthogonal decomposition for effective order reduction of governing equations.
Implemented a one-dimensional thermal circuit model for the radiator linked through bidirectional data mapping.
Achieved an average relative error of approximately 0.86% compared to experimental data.
Reduced computation time to 0.04% of traditional three-dimensional models.
Validated the model's applicability in real-time overload capacity evaluation.

Yuan et al. (2026) studied this question.

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Demonstrates a simplified model for calculating temperature fields in oil-immersed transformers, highlighting improved computational efficiency.