Work

Improved Thermal Model of Air-Insulated Power Transformers Considering the Effective Thermal Conductivity

Year: 2024

Type: conference-paper

Abstract: Transformers play a key role in transmission and distribution networks, ensuring efficient energy delivery with minimal losses. Optimal design is essential for efficient operation, and accurate thermal models with low computational demands are highly attractive for this purpose. This study highlights the critical role of predicting hotspot temperatures in transformer windings for accurate power transformer design. A thermal resistance network is used to model various transformers, which facilitates the estimation of the effective thermal conductivity that accurately reflects the real temperature gradient. Experimental measurements with interlayer thermocouples estimate the internal thermal gradient, enhancing the understanding and modeling of transformers’ thermal behavior, ultimately leading to improved design and performance.

Source: IEEE International Conference on Power System Technology

DOI: 10.1109/powercon60995.2024.10870535

Authors: José Antonio Badri, Marc Farrús, Jordi-Roger Riba, Antoni Garcia, Santi Trujillo, Albert Marzàbal

Institution: Universitat Politècnica de Catalunya

Language: English

Topic: Power Transformer Diagnostics and Insulation

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

SDGs: Affordable and clean energy, Industry, innovation and infrastructure

Open Access status: green

Funder: Generalitat de Catalunya