Comparison of the behavior of the free bubble and the one located on the electrode at AC action

Comparison of the behavior of the free bubble and the one located on the electrode at AC action Full article

Journal

IEEE Transactions on Dielectrics and Electrical Insulation
ISSN: 1070-9878

Output data

Year: 2023, Pages: 1-1 Pages count : 1 DOI: 10.1109/tdei.2023.3302829

Authors

Korobeynikov S.M. ¹ , Ridel A.V. ¹ , Ovsyannikov A.G. ¹ , Karpov D.I. ^1,2 , Loman Valentin A. ¹ , Savenko Roman A ^1,2

Affiliations

1	Power Engineering Department, Novosibirsk State Technical University, Novosibirsk, Russia
2	Laboratory of mechanics of multiphase media, Lavrentyev Institute of Hydrodynamics SB RAS, Novosibirsk, Russia

The paper reports an experimental study on partial discharges (PD) in bubbles, either floating or developed on an electrode in a transformer oil. In a test cell, the PD occurrence was a very rare event. The voltage of the appearance of the PD in both cases was approximately the same. Moreover, the waiting time for the PD in the bubble at the electrode was noticeably longer than that for the free bubble. The moisture content of the oil, as well as the addition of surfactants, had no effect on the occurrence of PD. Analysis of the data showed that only two mechanisms stimulated PD: pulsed X-ray radiation or the presence of water microdroplets. The reason for all these features is the formation of an initiating electrons.

Korobeynikov S.M. , Ridel A.V. , Ovsyannikov A.G. , Karpov D.I. , Loman V.A. , Savenko R.A.
Comparison of the behavior of the free bubble and the one located on the electrode at AC action
IEEE Transactions on Dielectrics and Electrical Insulation. 2023. P.1-1. DOI: 10.1109/tdei.2023.3302829 WOS Scopus РИНЦ OpenAlex

Published print:

Aug 9, 2023

Web of science:	WOS:001136082100034
Scopus:	2-s2.0-85167799648
Elibrary:	62471418
OpenAlex:	W4385696556

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