The SDIPF reliability curve of old EHV power transformers
The aging of large power transformers will keep the developers of specifications of new transformers working for many years to come.
byVitaly Gurin, Terrence O'Hanlon
A historical review for utilities when developing specifications for new transformers – Part I
The further development of UHV and EHV transmission lines and the aging of large power transformers (half of which are over 30 years old) will keep the developers of specifications of new transformers working for many years to come. To help them, a historical overview of the failures of EHV transformers in the 20th century was made in terms of modern Asset Lifecycle theory embedded in the SDIPF curve (Specify – Design – Installation – Potential failure – Failure), has been made. The main causes of accidents were shortcomings in Specify and Design.
Engineers for the development of specifications for new transformers will not be left without work for a long time, according to the authors, at least half a century. There are two reasons for this: the further development of electric power transmission over long distances and the aging of the existing fleet of power transformers.
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