Original scientific paper

Volt-time curves of oil-filled power transformer insulation - Survey of 100 years of research – Part III

Vitaly Gurin

Abstract

The third part of the article is a continuation of the previous part and examines the data of Soviet scientists on the dependence of the electrical strength of insulation of power transformers on time in historical development. Where possible, the scatter values of breakdown voltage and/or partial discharge initiation voltage have been extracted from the publications under consideration for data collection to optimize insulation design and possible future statistical coordination of the internal insulation of transformers. The article is intended for young transformer engineers and for teaching transformers to undergraduate and postgraduate students in universities.

Keywords

breakdown voltage; GOST; failure; EHV; insulation coordination; insulation testing; internal insulation; PD; power transformer; probability distribution; transformer oil; UHV; volt-time curve

Hrčak ID:

321322

URI

https://hrcak.srce.hr/321322

Publication date:

8.10.2024.

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