Original scientific paper

Are through-faults and slow breakers damaging your transformer? ABSTRACT Much

Brian Sparling ; IEEE,

Abstract

Much research and testing has been focused on the question: how much life remains in my transformer? Testing for furans dissolved in the oil to infer the average DP of the paper insulation on the conductors of the windings has been a focus for many years. While this offers some value, furans, by their nature, are volatile and can escape during any oil processing carried out. Therefore, it cannot be considered as a single test to make major decisions on the remaining life of a transformer.
There remains the need for further information on operation of a transformer in service to understand not just the chemical reactions taking place inside the tank, but what EXTERNAL events influence the mechanical damage sustained by the windings and the clamping structure.
These externally induced events include the impact of harmonics, through-faults, and slower than normal breaker operation.

Keywords

breakers, harmonics, damage, transformer aging, through-faults

Hrčak ID:

256529

URI

https://hrcak.srce.hr/256529

Publication date:

8.4.2021.

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