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Study on mechanical characteristics and molecular dynamics simulation of composite insulator sheds in service
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Feiyan HAN1, Yuyao HU1, Xingliang JIANG2, Hui LIU3, Tianyang LI1
Insulating Materials | 2024, 57(8) : 138 - 147
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Insulating Materials | 2024, 57(8): 138-147
• Test and Analysis •
Study on mechanical characteristics and molecular dynamics simulation of composite insulator sheds in service
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Feiyan HAN1, Yuyao HU1, Xingliang JIANG2, Hui LIU3, Tianyang LI1
Affiliations
  • 1Shandong Provincial Smart Grid and Equipment Engineering Laboratory, Shandong University of Technology, Zibo 255020, China
  • 2State Key Laboratory of Power Transmission and Distribution Equipment and System Safety and New Technology, Chongqing University, Chongqing 400044, China
  • 3State Grid Shandong Electric Power Company Electric Power Science Research Institute, Jinan 250003, China
Published: 2024-08-20 doi: 10.16790/j.cnki.1009-9239.im.2024.08.017
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In order to more finely evaluate the influence of factors such as the microstructure and material composition of the shed on the macroscopic performance of insulators, the mechanical properties, thermal weight loss, and Fourier infrared spectrum of AC composite insulators with different operating years were tested combined with the molecular dynamic simulation method in this paper. The results show that with the increase of operating years, the tear strength, tensile strength, and elongation at break of the insulator shed from low-voltage end to high-voltage end show a decreasing trend. The content of organic silicone and SiO2 in the outer layer of shed significantly decrease, which can cause a decrease in macroscopic mechanical properties. In the electro-thermal environment, the bulk modulus, Young′s modulus, and Poisson′s ratio of the shed decrease with the increase of temperature and fluctuate with the increase of electric field strength. The high-voltage end of insulator has the most severe electric field distortion and the worst mechanical properties. The multi-scale model of the composite insulator shed ageing established in this paper can provide a reference for evaluating the ageing state of insulator.

mechanical properties  /  thermogravimetric analysis  /  silicon rubber  /  electric field strength  /  FTIR
Feiyan HAN, Yuyao HU, Xingliang JIANG, Hui LIU, Tianyang LI. Study on mechanical characteristics and molecular dynamics simulation of composite insulator sheds in service[J]. Insulating Materials, 2024 , 57 (8) : 138 -147 . DOI: 10.16790/j.cnki.1009-9239.im.2024.08.017
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doi: 10.16790/j.cnki.1009-9239.im.2024.08.017
  • Receive Date：2023-08-19
  • Online Date：2025-12-24
  • Published：2024-08-20
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  • Received：2023-08-19
  • Revised：2023-11-29
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Affiliations
    1Shandong Provincial Smart Grid and Equipment Engineering Laboratory, Shandong University of Technology, Zibo 255020, China
    2State Key Laboratory of Power Transmission and Distribution Equipment and System Safety and New Technology, Chongqing University, Chongqing 400044, China
    3State Grid Shandong Electric Power Company Electric Power Science Research Institute, Jinan 250003, China
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https://castjournals.cast.org.cn/joweb/jycl/EN/10.16790/j.cnki.1009-9239.im.2024.08.017
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表12种不同金属材料的力学参数
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Number of
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Number of
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鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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