Agência Nacional de Energia Elétrica

Fault Diagnosis in Power Transformers: A Field Case Analysis Based on Visual Inspection and Electrical Testing

This paper presents an analysis of fault cases in three-phase oil-immersed power transformers diagnosed in an industrial environment between 2024 and 2026. The cases were identified through systematic visual inspection, electrical testing, and dissolved gas analysis (DGA), and we...

Fault Diagnosis in Power Transformers: A Field Case Analysis Based on Visual Inspection and Electrical Testing

This paper presents an analysis of fault cases in three-phase oil-immersed power transformers diagnosed in an industrial environment between 2024 and 2026. The cases were identified through systematic visual inspection, electrical testing, and dissolved gas analysis (DGA), and we...

Gaussian process regression for optimizing L-DED processing parameters in AlSi10Mg additive manufacturing

Abstract This work presents an experimental workflow coupled with statistical tools to optimize L-DED processing parameters to build defect-free AlSi10Mg multilayer parts. Experimental steps included the quantitative evaluation of single beads, single layers, and multilayers to d...