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Motion Characteristics of Copper Particles in Oil Immersed Transformer Insulating Oil and its Effect on Insulation PerformanceYANG, H.   , MA, J. , ZHOU, S. , CHEN, M. , ZHOU, F. , ZHANG, L. |
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Author keywords
electrical engineering, copper, power transformers, insulation testing, impurities
References keywords
transformer(14), insulation(13), characteristics(9), power(7), dielectric(7), voltage(6), tdei(6), metal(6), dielectrics(6), study(5)
Blue keywords are present in both the references section and the paper title.
About this article
Date of Publication: 2024-11-30
Volume 24, Issue 4, Year 2024, On page(s): 103 - 112
ISSN: 1582-7445, e-ISSN: 1844-7600
Digital Object Identifier: 10.4316/AECE.2024.04011
Web of Science Accession Number: 001415806000011
SCOPUS ID: 85211386107
Abstract
Oil-immersed transformers a key equipment in the power system, their safe and stable operation of the entire power system has an important impact. Oil-immersed transformers generate metal particles during production and transport, which can trigger insulation accidents in the transformer. In this paper, the motion distribution characteristics of copper particles in insulating oil and the influence mechanism on oil insulation performance are studied. The observation platform of impurity motion in oil is set up and combined with the relevant finite element simulation calculations, to carry out the influence of the external electric field environment on the kinetic behavior of solid particles, and to combine with the distribution characteristics of the particles to analyze the influence of their properties on the breakdown characteristics of the insulating oil. The results show that the metal particles will be aligned to form small bridges of metal impurities under the action of the applied electric field, and the increase of the electric field strength will lead to a significant increase in the aggregation of the metal particles. The formation of small bridges of impurities makes the transformer oil conductivity further enhanced, breakdown voltage decreases with the increase of particulate concentration, the results of this paper are of great engineering significance for the fault prevention and safety performance enhancement of oil-immersed transformers. |
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Faculty of Electrical Engineering and Computer Science
Stefan cel Mare University of Suceava, Romania
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Faculty of Electrical Engineering and Computer Science
Stefan cel Mare University of Suceava, Romania
All rights reserved: Advances in Electrical and Computer Engineering is a registered trademark of the Stefan cel Mare University of Suceava. No part of this publication may be reproduced, stored in a retrieval system, photocopied, recorded or archived, without the written permission from the Editor. When authors submit their papers for publication, they agree that the copyright for their article be transferred to the Faculty of Electrical Engineering and Computer Science, Stefan cel Mare University of Suceava, Romania, if and only if the articles are accepted for publication. The copyright covers the exclusive rights to reproduce and distribute the article, including reprints and translations.
Permission for other use: The copyright owner's consent does not extend to copying for general distribution, for promotion, for creating new works, or for resale. Specific written permission must be obtained from the Editor for such copying. Direct linking to files hosted on this website is strictly prohibited.
Disclaimer: Whilst every effort is made by the publishers and editorial board to see that no inaccurate or misleading data, opinions or statements appear in this journal, they wish to make it clear that all information and opinions formulated in the articles, as well as linguistic accuracy, are the sole responsibility of the author.