One of the most expensive power system components is transformer. The correct use and
health of the transformer increase the reliability of the power network. The transformer health …

This review addresses the modeling approaches for heat transfer processes in oil-immersed
transformer. Electromagnetic, thermal, and hydrodynamic thermal fields are identified as the …

An accurate simulation and computational analysis of temperature distribution in large
power transformers used in power plants is crucial during both the design and operational …

This paper (Part II) presents a study of the zero-sequence permissible temperature rise (T
perm) on metallic structural components in wye-wye-connected transformers without a …

Oil-immersed transformers use paper and oil as insulation system which degrades slowly
during the operation of these machines. Cellulose materials are used generally as insulation …

Nowadays, as an alternative to conventional mineral oils used for cooling in distribution
transformers, environment-friendly ester oils are getting more attention. For this reason, the …

Two natural ester-based transformer fluids derived from soybean oil and rapeseed oil were
compared to their edible equivalents. Oxidative ageing was performed in the presence of …

The aging behaviour of three insulation fluids from sustainable sources (natural ester,
synthetic ester, and a bio-based hydrocarbon fluid) were compared with that of a …

The search for alternative, more environmentally friendly coolants to replace mineral oils in
power transformers represents a relevant challenge for the power industry. In this frame, a …

Today, the use of electricity sources is increasing as cities are growing. With the increasing
use of mineral oils for transformers cooling in the distribution network, due to the problems …