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A Novel Anti-maloperation Gas Relay for Internal Fault Protection of Oil-immersed TransformerXUE, B.   , YI, W. , LI, Y. , LIU, C., TIAN, S., MA, J., ZHANG, T., WAN, S. |
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Author keywords
anti-maloperation gas relay, baffle angle, differential current, heavy gas alarm, oil-immersed transformer
References keywords
link(18), transformer(16), relay(14), power(9), analysis(8), technology(6), research(6), method(6), fault(6), zhou(5)
Blue keywords are present in both the references section and the paper title.
About this article
Date of Publication: 2025-02-28
Volume 25, Issue 1, Year 2025, On page(s): 21 - 28
ISSN: 1582-7445, e-ISSN: 1844-7600
Digital Object Identifier: 10.4316/AECE.2025.01003
SCOPUS ID: 86000313424
Abstract
The gas relay is an essential non-electric protection device in oil-immersed transformers. Due to the single triggering mode of heavy gas alarm and external faults, gas relay may cause misoperation of heavy gas. A method for preventing misoperation based on gas relay baffle angle information and the differential current signal is proposed, and an intelligent anti-misoperation gas relay is designed. Based on angle sensors and Hall current sensors, the gas relay was improved and designed. According to the performance comparison and analysis of the improved performance, a modified scheme based on Hall current sensors was selected to measure the angle of the baffle. The combination of baffle angle information and relay signal was used to determine whether the heavy gas signal was a false alarm. Based on differential current signals, the type of transformer faults can be determined to avoid false alarms of heavy gas caused by faults outside the area. A new type of anti-misoperation gas relay developed by combining two anti-misoperation strategies can not only output heavy gas misoperation types but also monitor the real-time operation status of transformers. |
| References | | | Cited By «-- Click to see who has cited this paper |
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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.
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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.