Condition monitoring of power transformers, which are key components of electrical power
systems, is essential to identify incipient faults and avoid catastrophic failures. In this paper …

The life expectancy of power transformers is primarily determined by the integrity of the
insulating oil and cellulose paper between the conductor turns, phases and phase to earth …

Losses and maximum temperature are important indicators of the health status of the
medium-frequency magnetic components. Both the losses and the maximum temperature …

In the traditional transformer temperature calculation methods, the hot spot temperature
(HST) is obtained by calculating the oil temperature rise, winding temperature rise, and then …

Precise forecasting of the thermal parameters is a critical factor for the safe operation and
fault incipient warning of the ultra‐high voltage (UHV) transformers. In this work, a novel …

Power transformers are one of the most costly assets in power grids. Due to increasing
electricity demand and levels of distributed generation, they are more and more often loaded …

This paper proposes an inversion method to estimate a 10 kV oil-immersed transformer
transient hot spot temperature (HST). A set of transient feature quantities which can reflect …

International technical committees put considerable efforts into the writing process of
standards. They always try to find a tradeoff between the rigorous scientific requirements …

Power transformers submerged in oil are universally acknowledged as very useful elements
in electrical power networks. A fraction of the electrical energy involved in the conversion …

Transformer performance and efficiency can be enhanced by effectively address the
properties of its insulation system. The power transformer insulation system weakens as a …