Abstract
The reliability of the power grid system directly contributes to the economic well-being and the quality of life of citizens in any country. [...]
Highlights
The reliability of the power grid system directly contributes to the economic well-being and the quality of life of citizens in any country
In the electric power distribution and transmission systems, it is essential that key equipment such as transformers function properly for many years
Assessment methods have allowed monitoring their conditions with the aim of providing the basic information required for power grid operators and maintenance planners to understand the issues related to aging
Summary
The reliability of the power grid system directly contributes to the economic well-being and the quality of life of citizens in any country. Many transformers around the world are approaching the end of their theoretical design life In this context, managing the aging population of power transformers has become one of the most critical issues today’s maintenance planners and engineers have to face. The main objectives are: to extend their service life and optimize their performance through increased availability For these reasons, transformer life management in the past few decades has gained an ever-increasing interest due to economic and technical reasons. The focus is on harvesting renewable resources instead of fossil fuels, and using environmentally friendly materials In this context, new materials are emerging for the design of electrotechnical insulation systems including biodegradable insulating materials, with properties that are at least equal to conventional materials. New or emerging diagnostic/monitoring technologies; Mineral oils of improved characteristics, additives; Nanofluids and synthetic/vegetable dielectric liquids; New materials for transformers; Transformer life management
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