The Identification Method of the Winding Vibration Faults of Dry-Type Transformers
To identify the four typical faults of dry-type transformer winding insulations, looseness, deformation and eccentricity, this study establishes the electric magnetic force multi-physical field simulation model of a dry-type transformer winding under the four typical faults with COMSOL software, bas...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-12-01
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| Series: | Electronics |
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| Online Access: | https://www.mdpi.com/2079-9292/12/1/3 |
| _version_ | 1797626028701515776 |
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| author | Shulian Liu Ling Zhang Likang Yang Cunkai Gu Zaihua Wang |
| author_facet | Shulian Liu Ling Zhang Likang Yang Cunkai Gu Zaihua Wang |
| author_sort | Shulian Liu |
| collection | DOAJ |
| description | To identify the four typical faults of dry-type transformer winding insulations, looseness, deformation and eccentricity, this study establishes the electric magnetic force multi-physical field simulation model of a dry-type transformer winding under the four typical faults with COMSOL software, based on the vibration mechanism of an SCB10-1000/10 dry-type transformer. Through the multi-physical field coupling calculation, the comparative relationship between the vibration acceleration of the winding under the four kinds of faults and the normal working state is obtained. The results show that the amplitude growth rate of the fundamental frequency or harmonic frequency of the acceleration signal under four kinds of faults is different from that under normal conditions. Therefore, the threshold value of the fundamental frequency or harmonic increment of the acceleration signal is introduced to describe the growth rate of the acceleration signal relative to normal conditions. Finally, four typical faults are identified with different threshold ranges of acceleration increment under faults, laying a foundation for the fault diagnosis of transformer winding vibrations. |
| first_indexed | 2024-03-11T10:04:48Z |
| format | Article |
| id | doaj.art-473c353227934b6b869da3f7b82025f4 |
| institution | Directory Open Access Journal |
| issn | 2079-9292 |
| language | English |
| last_indexed | 2024-03-11T10:04:48Z |
| publishDate | 2022-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Electronics |
| spelling | doaj.art-473c353227934b6b869da3f7b82025f42023-11-16T15:09:47ZengMDPI AGElectronics2079-92922022-12-01121310.3390/electronics12010003The Identification Method of the Winding Vibration Faults of Dry-Type TransformersShulian Liu0Ling Zhang1Likang Yang2Cunkai Gu3Zaihua Wang4Department of Mechanical and Energy Engineering, Zhejiang University of Science and Technology, Hangzhou 310023, ChinaDepartment of Mechanical and Energy Engineering, Zhejiang University of Science and Technology, Hangzhou 310023, ChinaDepartment of Mechanical and Energy Engineering, Zhejiang University of Science and Technology, Hangzhou 310023, ChinaDepartment of Mechanical and Energy Engineering, Zhejiang University of Science and Technology, Hangzhou 310023, ChinaResearch Institute of Electric Power Academy of State Grid Zhejiang Electric Power Company, Hangzhou 310014, ChinaTo identify the four typical faults of dry-type transformer winding insulations, looseness, deformation and eccentricity, this study establishes the electric magnetic force multi-physical field simulation model of a dry-type transformer winding under the four typical faults with COMSOL software, based on the vibration mechanism of an SCB10-1000/10 dry-type transformer. Through the multi-physical field coupling calculation, the comparative relationship between the vibration acceleration of the winding under the four kinds of faults and the normal working state is obtained. The results show that the amplitude growth rate of the fundamental frequency or harmonic frequency of the acceleration signal under four kinds of faults is different from that under normal conditions. Therefore, the threshold value of the fundamental frequency or harmonic increment of the acceleration signal is introduced to describe the growth rate of the acceleration signal relative to normal conditions. Finally, four typical faults are identified with different threshold ranges of acceleration increment under faults, laying a foundation for the fault diagnosis of transformer winding vibrations.https://www.mdpi.com/2079-9292/12/1/3transformer windingmultiple physical fieldsmechanical failurevibration |
| spellingShingle | Shulian Liu Ling Zhang Likang Yang Cunkai Gu Zaihua Wang The Identification Method of the Winding Vibration Faults of Dry-Type Transformers Electronics transformer winding multiple physical fields mechanical failure vibration |
| title | The Identification Method of the Winding Vibration Faults of Dry-Type Transformers |
| title_full | The Identification Method of the Winding Vibration Faults of Dry-Type Transformers |
| title_fullStr | The Identification Method of the Winding Vibration Faults of Dry-Type Transformers |
| title_full_unstemmed | The Identification Method of the Winding Vibration Faults of Dry-Type Transformers |
| title_short | The Identification Method of the Winding Vibration Faults of Dry-Type Transformers |
| title_sort | identification method of the winding vibration faults of dry type transformers |
| topic | transformer winding multiple physical fields mechanical failure vibration |
| url | https://www.mdpi.com/2079-9292/12/1/3 |
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