Streaming Electrification Phenomenon of Electrical Insulating Oils for Power Transformers

Maciej Zdanowski
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Maciej Zdanowski: Faculty of Electrical Engineering, Automatic Control and Informatics, Opole University of Technology, Prószkowska 76, 45-758 Opole, Poland

Energies, 2020, vol. 13, issue 12, 1-12

Abstract: The subject matter of this study was the problem of the ECT (electrostatic charging tendency) of mineral insulation oils during their flow. The electrostatic charges generated may lead to partial discharges, and as a consequence, to the breakdown of a power transformer insulation system. In this study, the results of the ECT of mineral oils used in transformers were compared. The method of streaming electrification of insulation liquids using a flow-through system was used. The influence of flow speed, temperature, and the pipe material on the values of the electrification current and volume charge density q w were analyzed . The results obtained in this study should be taken into account regarding the operation of power transformers.

Keywords: electrical insulation; power transformers; streaming electrification; insulation aging; insulation diagnostics (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View complete reference list from CitEc
Citations: View citations in EconPapers (7)

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