This paper describes precise tests of frequency–temperature relations of the phase shift
angle and admittance of a reference sample of composite of cellulose and insulating oil with …

Synchronous generators are key pieces in any power system. Therefore, it is essential to
have effective protection and diagnosis techniques for these machines. Ground faults are …

The paper describes the application of the numerical tool quality index for an objective
evaluation of complementary frequency response analysis (FRA) and vibroacoustic method …

Power converters are essential for process optimization and electric drives control. However,
the presence of both dc and ac currents in the same circuit makes the diagnosis and …

Se describe la aplicación del análisis de respuesta al barrido de frecuencia (SFRA) como
herramienta de diagnóstico de fallas en dos autotransformadores de una subestación. A …

This article presents direct σDC and alternating σ (f) current conductivity measurements
obtained by the frequency domain spectroscopy (FDS) method on cellulose-transformer oil …

Frequency response analysis is a method used in transformer diagnostics for the detection
of mechanical faults or short-circuits in windings. The interpretation of test results is often …

Synchronous generators are key pieces in any power system. Therefore, it is essential to
have effective protection and diagnosis techniques for these machines. Ground faults are …

A frequency spectrum segmentation methodology is proposed to extract the frequency
response of circuits and systems with high resolution and low distortion over a wide …

At present, the detection of transformer winding deformation faults is carried out in an offline
state, which requires the transformer to cooperate with the implementation of planned power …