Electrical strength of air containing ozone and nitric oxides produced by intensive partial discharges

2001 ◽  
Vol 8 (4) ◽  
pp. 607-611 ◽  
Author(s):  
K. Chrzan ◽  
J.M. Andino
Keyword(s):  
Partial Discharges ◽  
Electrical Strength ◽  
Nitric Oxides

Editorial: Partial discharges

1995 ◽  
Vol 142 (1) ◽  
pp. 1-3 ◽  
Author(s):  
J.C. Fothergill ◽  
F.H.. Kreuger ◽  
A. Kelen ◽  
G.C. Stevens
Keyword(s):  
Partial Discharges

Antenna array layout for the localization of partial discharges in open-air substations

2015 ◽  
Author(s):  
Guillermo Robles ◽  
José Manuel Fresno ◽  
Matilde Sánchez-Fernández ◽  
Juan Manuel Martínez-Tarifa
Keyword(s):  
Antenna Array ◽  
Partial Discharges

A strategy to locate partial discharges in power transformers using acoustic emission

2007 ◽  
Vol 1 (05) ◽  
pp. 596-600 ◽  
Author(s):  
Giscard Franceire Cintra Veloso ◽  
◽  
Luiz Eduardo Borges da Silva ◽  
Germano Lambert-Torres
Keyword(s):  
Acoustic Emission ◽  
Partial Discharges ◽  
Power Transformers

The influence of ultrasound signal parameters on sonoluminescence light intensity

2013 ◽  
Vol 62 (4) ◽  
pp. 605-612
Author(s):  
Marek Szmechta ◽  
Tomasz Boczar ◽  
Dariusz Zmarzły
Keyword(s):  
Acoustic Emission ◽  
Acoustic Waves ◽  
Power Transformer ◽  
Electrical Power ◽  
Partial Discharges ◽  
Research Project ◽  
Insulation Systems ◽  
Secondary Phenomenon ◽  
New Research ◽  
The Relationship

Abstract 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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