Power transformers are one of the most important components of the electrical power
networks. A wide range of mechanical and electrical stresses in addition to the aging could …

With the fast-paced changing technologies in the power industry, new references
addressing new technologies are coming to the market. Based on this fact, there is an urgent …

There have been considerable advancements in various aspects of transformer engineering
since the publication of the first edition in 2004. Improvements can be clearly seen in …

On-line monitoring and diagnosis of transformers have been investigated and discussed
significantly in last decade. This study has concentrated on issues arising while on-line …

The majority of transformers currently in service worldwide were installed prior to 1980, and
consequently most of them are approaching or have already exceeded their design lifetimes …

This paper presents an advanced model of the frequency response of a three-phase power
transformer for use in conjunction with diagnostic measurements by the method of frequency …

Frequency response analysis (FRA) has become a widely accepted technique by worldwide
utilities to detect winding and core deformations within power transformers. The main …

A power transformer will yield a frequency response which is unique to its mechanical
geometry and electrical properties. Changes in the frequency response of a transformer can …

Frequency-response analysis (FRA) has been accepted as one of the most sensitive tools to
detect mechanical faults of power transformers. Correct interpretation of FRA responses is …

Frequency response analysis (FRA) has been globally accepted as a reliable tool to detect
mechanical deformation within power transformers. However, because of its reliance on …