Original scientific paper

The importance of thermal design to transformer lifetime

Paul Jarman ; University of Manchester

Abstract

According to the evidence gathered from many large scrapped transformers over the years, some transformers seem to have aged thermally at much higher rates than others. This discrepancy cannot always be ascribed to the operating conditions, and it has become clear that some units have much higher internal temperatures and consequently more rapid ageing than expected. This column explores some of the potential reasons for this, some of the research that has been carried out and some of the considerations and techniques that can be applied to avoid problems in the future.

Keywords

cooling technology; windings; oil cooling; hot-spot; thermal design; transformer lifetime

Hrčak ID:

236746

URI

https://hrcak.srce.hr/236746

Publication date:

8.4.2020.

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