Breakdown modeling of HVAC-GIL tri-post insulator subjected to electric field and mechanical loading
This research develops a simulation model, aiming to study the breakdown process of the tri-post insulator when exposed to electric field and mechanical loadings. The insulator is subjected to external forces of varying magnitudes and directions, along with an applied 1100 kV AC voltage. Results sho...
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| Format: | Article |
| Language: | English |
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China electric power research institute
2024-01-01
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| Series: | CSEE Journal of Power and Energy Systems |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/10748585/ |
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| _version_ | 1846170381763739648 |
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| author | Jianan Dong Boxue Du Hucheng Liang Zhijun Guo |
| author_facet | Jianan Dong Boxue Du Hucheng Liang Zhijun Guo |
| author_sort | Jianan Dong |
| collection | DOAJ |
| description | This research develops a simulation model, aiming to study the breakdown process of the tri-post insulator when exposed to electric field and mechanical loadings. The insulator is subjected to external forces of varying magnitudes and directions, along with an applied 1100 kV AC voltage. Results show that the breakdown process is driven by the electrostatic energy density (W<inf>ele</inf>) under an AC voltage. As the length of the breakdown channel increases, W<inf>ele</inf>, also rises, thereby accelerating the extension of the breakdown channel. After applying a straight tension along the insulator post, the tensile stress and the corresponding strain energy density become concentrated near the tips of the lateral branches, thus promoting their expansion and even causing a transverse fracture under the condition of 100 kN. In the case of a small straight compression below 25 kN, the breakdown process can be restrained. But when it comes to 75 kN, the breakdown process is promoted again, and a shear fracture can be caused above 100 kN. Under diagonal tensile or compressive stress, the breakdown channel deviates towards the applied force due to asymmetric strain energy density distribution. The objective of this research is to improve the comprehension and forecasting of breakdown in dielectric materials. |
| format | Article |
| id | doaj-art-6b9529abbfe34cf9b8cbef50231c4708 |
| institution | Kabale University |
| issn | 2096-0042 |
| language | English |
| publishDate | 2024-01-01 |
| publisher | China electric power research institute |
| record_format | Article |
| series | CSEE Journal of Power and Energy Systems |
| spelling | doaj-art-6b9529abbfe34cf9b8cbef50231c47082024-11-12T00:02:09ZengChina electric power research instituteCSEE Journal of Power and Energy Systems2096-00422024-01-01PP991910.17775/CSEEJPES.2023.0554010748585Breakdown modeling of HVAC-GIL tri-post insulator subjected to electric field and mechanical loadingJianan Dong0Boxue Du1Hucheng Liang2Zhijun Guo3School of Electrical and Information Engineering, Tianjin University, Tianjin, ChinaSchool of Electrical and Information Engineering, Tianjin University, Tianjin, ChinaSchool of Electrical and Information Engineering, Tianjin University, Tianjin, ChinaSchool of Electrical and Information Engineering, Tianjin University, Tianjin, ChinaThis research develops a simulation model, aiming to study the breakdown process of the tri-post insulator when exposed to electric field and mechanical loadings. The insulator is subjected to external forces of varying magnitudes and directions, along with an applied 1100 kV AC voltage. Results show that the breakdown process is driven by the electrostatic energy density (W<inf>ele</inf>) under an AC voltage. As the length of the breakdown channel increases, W<inf>ele</inf>, also rises, thereby accelerating the extension of the breakdown channel. After applying a straight tension along the insulator post, the tensile stress and the corresponding strain energy density become concentrated near the tips of the lateral branches, thus promoting their expansion and even causing a transverse fracture under the condition of 100 kN. In the case of a small straight compression below 25 kN, the breakdown process can be restrained. But when it comes to 75 kN, the breakdown process is promoted again, and a shear fracture can be caused above 100 kN. Under diagonal tensile or compressive stress, the breakdown channel deviates towards the applied force due to asymmetric strain energy density distribution. The objective of this research is to improve the comprehension and forecasting of breakdown in dielectric materials.https://ieeexplore.ieee.org/document/10748585/ModelingbreakdowninsulatorelectricalmechanicalHVAC-GIL |
| spellingShingle | Jianan Dong Boxue Du Hucheng Liang Zhijun Guo Breakdown modeling of HVAC-GIL tri-post insulator subjected to electric field and mechanical loading CSEE Journal of Power and Energy Systems Modeling breakdown insulator electrical mechanical HVAC-GIL |
| title | Breakdown modeling of HVAC-GIL tri-post insulator subjected to electric field and mechanical loading |
| title_full | Breakdown modeling of HVAC-GIL tri-post insulator subjected to electric field and mechanical loading |
| title_fullStr | Breakdown modeling of HVAC-GIL tri-post insulator subjected to electric field and mechanical loading |
| title_full_unstemmed | Breakdown modeling of HVAC-GIL tri-post insulator subjected to electric field and mechanical loading |
| title_short | Breakdown modeling of HVAC-GIL tri-post insulator subjected to electric field and mechanical loading |
| title_sort | breakdown modeling of hvac gil tri post insulator subjected to electric field and mechanical loading |
| topic | Modeling breakdown insulator electrical mechanical HVAC-GIL |
| url | https://ieeexplore.ieee.org/document/10748585/ |
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