Energija, Vol. 73. No. 2., 2024.
Izvorni znanstveni članak
https://doi.org/10.37798/2024732513
Numerical Calculation and Direct Measurement of Local Hot Spot Temperatures in Transformer Clamping Plates
Dino Kovačević
orcid.org/0009-0007-7421-5337
; Končar – Distribution and Special Transformers Inc., Zagreb, Croatia
Mladen Marković
orcid.org/0000-0002-8102-5386
; Končar – Distribution and Special Transformers Inc., Zagreb, Croatia
Damir Blažina
; Končar – Distribution and Special Transformers Inc., Zagreb, Croatia
Sažetak
A verified multiphysics model is developed to simulate local hot spot temperatures in clamping structures. Stray field losses in clamping plates are obtained with the use of nonlinear impedance boundary condition through finite element method (FEM) while hot spot temperatures are simulated with the use of computational fluid dynamics (CFD). This multiphysics coupling is validated through direct measurements of local hot spot temperatures that were carried out with fiber optic temperature probes in real transformer. The local hot spot temperatures obtained with the simulations were in good agreement with the measured values, thus verifying overall approach and indirectly the calculation of local stray field losses.
Ključne riječi
Transformer; Multiphysics; Stray Field Losses; Hot Spot Temperature; Clamping Plates; Fiber Optic Probes
Hrčak ID:
319086
URI
Datum izdavanja:
4.6.2024.
Posjeta: 116 *