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Implementation, fine tuning and validation of a nonlinear power transformer model for transient electromagnetic studies.
Implementación, ajuste fino y validación de un modelo no lineal de transformador de potencia para estudio de transitorios electromagnéticos.
DOI:
https://doi.org/10.15446/sicel.v12.120744Palabras clave:
Power Transformer, Electromagnetic Simulation, Saturation Curve, Inrush Current (en)Transformador., Simulación Electromagnética, Curva de Saturación, Corriente de Irrupción (es)
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This paper presents the development, implementation, fine-tuning, and validation of a nonlinear three-phase transformer model to analyze electromagnetic transient phenomena, such as inrush current. The model was developed using two complementary platforms: Simscape Electrical, known for its computational efficiency in parametric studies, and Ansys Maxwell, which offers high-fidelity simulations through the Finite Element Method (FEM). The transformer’s core was modeled by incorporating nonlinear behavior via the saturation curve and leakage fluxes. The methodology consisted of four stages: modeling, simulation, comparison, and parameter tuning. Through an iterative parameter estimation process, it was possible to reduce the mean square error (MSE) by 87.08% when compared to the current curves before implementing the leakage reluctances, thus validating the ability of the developed model to simulate the transient currents of the transformer accurately. This work provides a solid foundation for future probabilistic studies of transient phenomena using the Monte Carlo method.
Este artículo presenta el desarrollo, implementación, ajuste y validación de un modelo no lineal de transformador trifásico para el análisis de fenómenos electromagnéticos transitorios, como es el caso de la corriente de irrupción. El modelo fue desarrollado usando dos plataformas complementarias: Simscape Electrical, conocida por su eficiencia computacional en estudios de análisis paramétricos, y Ansys Maxwell, la cual ofrece simulaciones de alta precisión en la simulación basadas en el método de elementos finitos (FEM). El núcleo del transformador se modeló incorporando el comportamiento no lineal a través de la curva de saturación y los flujos de fuga. La metodología constó de cuatro etapas: modelado, simulación, comparación y ajuste de parámetros. A través un proceso iterativo de estimación de parámetros, fue posible reducir el error cuadrático medio (MSE) en un 87.08% en comparación con las curvas de corriente antes de implementar las reluctancias de dispersión, validando así la capacidad del modelo desarrollado para simular con precisión las corrientes transitorias del transformador. Este trabajo sienta las bases para futuros análisis probabilísticos de fenómenos transitorios, como la corriente de irrupción, mediante el método de Monte Carlo.
Referencias
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Derechos de autor 2025 Nicolas A. Marin, Guillermo A. Diaz, Juan M. Rey
Esta obra está bajo una licencia internacional Creative Commons Atribución 4.0.
