Research on insulation state evaluation and detection technology for 40.5 kV switchgear wall bushing
Wall bushing is the core insulator of 40.5 kV air insulation switchgear, and its insulation performance determines the insulation level and service life of the switchgear. Wall bushing often appears partial discharge, insulation aging, grounded breakdown, and other problems after a period of operati...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2023-05-01
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| Series: | Energy Reports |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2352484722027093 |
| _version_ | 1797809867124113408 |
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| author | Bo Niu Zhonghua Xiang Weifeng Liu Feiyue Ma Bo Niu Zhi Xu |
| author_facet | Bo Niu Zhonghua Xiang Weifeng Liu Feiyue Ma Bo Niu Zhi Xu |
| author_sort | Bo Niu |
| collection | DOAJ |
| description | Wall bushing is the core insulator of 40.5 kV air insulation switchgear, and its insulation performance determines the insulation level and service life of the switchgear. Wall bushing often appears partial discharge, insulation aging, grounded breakdown, and other problems after a period of operation. The main reason is the partial discharge of the equipotential line for the wall bushing. In this paper, the influence of the wall bushing equipotential line on the electric field distribution is systematically analyzed to improve the operating reliability and service life of the 40.5 kV wall bushing. Based on the electric field simulation of the equipotential line, the feasibility of the traditional live detection method is given. The characteristic gas detection method is proposed through air electrolysis, thermal decomposition, early warning of the development trend of the internal suspension defect state. Finally, it proposes corresponding preventive measures to avoid the development of internal suspension defect of wall bushing into a sudden grounding, and ensure the reliability of the system operation. |
| first_indexed | 2024-03-13T06:59:22Z |
| format | Article |
| id | doaj.art-b78b52bd9dd243f5a5b057c6c02ffda3 |
| institution | Directory Open Access Journal |
| issn | 2352-4847 |
| language | English |
| last_indexed | 2024-03-13T06:59:22Z |
| publishDate | 2023-05-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Energy Reports |
| spelling | doaj.art-b78b52bd9dd243f5a5b057c6c02ffda32023-06-07T04:48:38ZengElsevierEnergy Reports2352-48472023-05-019295302Research on insulation state evaluation and detection technology for 40.5 kV switchgear wall bushingBo Niu0Zhonghua Xiang1Weifeng Liu2Feiyue Ma3Bo Niu4Zhi Xu5Power Research Institute of State Grid Ningxia Power Co., Yinchuan, 750001, China; Corresponding author.State Grid Ningxia Power Co., Yinchuan, 750011, ChinaPower Research Institute of State Grid Ningxia Power Co., Yinchuan, 750001, ChinaPower Research Institute of State Grid Ningxia Power Co., Yinchuan, 750001, ChinaPower Research Institute of State Grid Shanxi Power Co, Xian, 710054, ChinaNingxia Licheng Electric Group Co., Ltd., Yinchuan, 750011, ChinaWall bushing is the core insulator of 40.5 kV air insulation switchgear, and its insulation performance determines the insulation level and service life of the switchgear. Wall bushing often appears partial discharge, insulation aging, grounded breakdown, and other problems after a period of operation. The main reason is the partial discharge of the equipotential line for the wall bushing. In this paper, the influence of the wall bushing equipotential line on the electric field distribution is systematically analyzed to improve the operating reliability and service life of the 40.5 kV wall bushing. Based on the electric field simulation of the equipotential line, the feasibility of the traditional live detection method is given. The characteristic gas detection method is proposed through air electrolysis, thermal decomposition, early warning of the development trend of the internal suspension defect state. Finally, it proposes corresponding preventive measures to avoid the development of internal suspension defect of wall bushing into a sudden grounding, and ensure the reliability of the system operation.http://www.sciencedirect.com/science/article/pii/S2352484722027093Air switchgearWall bushingEquipotential lineElectric field simulationPartial discharge |
| spellingShingle | Bo Niu Zhonghua Xiang Weifeng Liu Feiyue Ma Bo Niu Zhi Xu Research on insulation state evaluation and detection technology for 40.5 kV switchgear wall bushing Energy Reports Air switchgear Wall bushing Equipotential line Electric field simulation Partial discharge |
| title | Research on insulation state evaluation and detection technology for 40.5 kV switchgear wall bushing |
| title_full | Research on insulation state evaluation and detection technology for 40.5 kV switchgear wall bushing |
| title_fullStr | Research on insulation state evaluation and detection technology for 40.5 kV switchgear wall bushing |
| title_full_unstemmed | Research on insulation state evaluation and detection technology for 40.5 kV switchgear wall bushing |
| title_short | Research on insulation state evaluation and detection technology for 40.5 kV switchgear wall bushing |
| title_sort | research on insulation state evaluation and detection technology for 40 5 kv switchgear wall bushing |
| topic | Air switchgear Wall bushing Equipotential line Electric field simulation Partial discharge |
| url | http://www.sciencedirect.com/science/article/pii/S2352484722027093 |
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