Acoustic Spectra of Ultrasound Induced Cavitations in Insulating Oils

Szmechta, M.; Zmarzły, D.; Boczar, T.; Lorenc, M.

doi:10.12693/aphyspola.114.a-231

Cited by 6 publications

(5 citation statements)

References 16 publications

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“…Although long hours of observation there were no clear luminescence areas despite the use of new insulating oil. The mentioned research project concerns mainly the acoustic cavitation spectra measurements already published [27][28][29][30][31].…”

Section: Measurement Results In Other Liquidsmentioning

confidence: 99%

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The influence of ultrasound signal parameters on sonoluminescence light intensity

Szmechta¹,

Boczar²,

Zmarzły³

2013

Archives of Electrical Engineering

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Topics of this article concern the study of the fundamental nature of the sonoluminescence phenomenon occurring in liquids. At the Institute of Electrical Power Engineering at Opole University of Technology the interest in that phenomenon known as secondary phenomenon of cavitation caused by ultrasound became the genesis of a research project concerning acoustic cavitation in mineral insulation oils in which a number of additional experiments performed in the laboratory aimed to determine the influence of a number of acoustic parameters on the process of the studied phenomenona. The main purpose of scientific research subject undertaken was to determine the relationship between the generation of partial discharges in high-voltage power transformer insulation systems, the issue of gas bubbles in transformer oils and the generated acoustic emission signals. It should be noted that currently in the standard approach, the phenomenon of generation of acoustic waves accompanying the occurrence of partial discharges is generally treated as a secondary phenomenon, but it can also be a source of many other related phenomena. Based on our review of the literature data on those referred subjects taken, it must be noted, that this problem has not been clearly resolved, and the description of the relationship between these phenomena is still an open question. This study doesn't prove all in line with the objective of the study, but can be an inspiration for new research project in the future in this topic. Solution of this problem could be a step forward in the diagnostics of insulation systems for electrical power devices based on non-invasive acoustic emission method.

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Section: Measurement Results In Other Liquidsmentioning

confidence: 99%

“…The schematic diagram of used measurement device was previously published in several papers [26,27]. Designed and constructed measurement system can be divided into the following functional blocks:…”

Section: Measurement Setupmentioning

confidence: 99%

The influence of ultrasound signal parameters on sonoluminescence light intensity

Szmechta¹,

Boczar²,

Zmarzły³

2013

Archives of Electrical Engineering

View full text Add to dashboard Cite

show abstract

“…Acoustic analysis is also profitable for the analysis of the power transformer and detection of defects in on-load tap-changers [29,30]. Acoustically induced cavitation bubbles in insulating oil are also presented in the literature [31].…”

Section: The Contentmentioning

confidence: 99%