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Multi-physical Field Analysis and Shed Structure Optimization of Ice-covered Insulators in Catenary
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Duoqing ZHAO1, Jie ZENG1, Zhongping XU2, Xiang GUO2, Weigang JIN3, Liangsong ZHOU4
Insulating Materials | 2022, 55(7) : 78 - 86
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Insulating Materials | 2022, 55(7): 78-86
• Insulation Technology •
Multi-physical Field Analysis and Shed Structure Optimization of Ice-covered Insulators in Catenary
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Duoqing ZHAO1, Jie ZENG1, Zhongping XU2, Xiang GUO2, Weigang JIN3, Liangsong ZHOU4
Affiliations
  • 1State Grid Tibet Electric Power Co., Ltd., Lasa 850000, China
  • 2Beijing State Grid Xintong Accenture Information Technology Co., Ltd., Beijing 100031, China
  • 3Central China Branch of State Grid Corporation of China, Wuhan 430077, China
  • 4State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
Published: 2022-07-20 doi: 10.16790/j.cnki.1009-9239.im.2022.07.012
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The dry and cold environment of the Qinghai-Tibet Plateau is easy to make the insulators of railway catenary ice-coated, causing serious ice flash accidents. To study the operating status of ice-coated insulators in catenary, a two-dimensional ice-coated model of cantilever insulators was established according to the winter environmental characteristics of Golmud station on the Qinghai-Tibet railway, and the porcelain insulator XP-160 and composite insulator FXBW-110/100 were used as contrast. The spatial electric field distribution and surface temperature distribution characteristics of different types of ice-coated insulators were analyzed by electrostatic field and Joule heat field simulation. Finally, the shed structure of the insulator was optimized. The results show that as the thickness of ice layer and the length of ice crystal increase, the field intensity of each insulator increases gradually, and the surface temperature continues to rise. When the insulator is bridged by the ice crystal, the field intensity decreases, which is slightly lower than the field intensity of clean insulator. The increase of arrangement angle for the cantilever insulator will lead to the increase of electric field, but it has little effect on the temperature. Therefore, the arrangement angle of cantilever insulator should decrease during installation. The insulators with one large and two small shed structure can effectively reduce the increase of field intensity and suppress the temperature rise.

cantilever insulator  /  ice-coated  /  electrostatic field  /  Joule heat field  /  physical field coupling  /  finite element simulation
Duoqing ZHAO, Jie ZENG, Zhongping XU, Xiang GUO, Weigang JIN, Liangsong ZHOU. Multi-physical Field Analysis and Shed Structure Optimization of Ice-covered Insulators in Catenary[J]. Insulating Materials, 2022 , 55 (7) : 78 -86 . DOI: 10.16790/j.cnki.1009-9239.im.2022.07.012
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Year 2022 volume 55 Issue 7
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Article Info
doi: 10.16790/j.cnki.1009-9239.im.2022.07.012
  • Receive Date：2021-08-06
  • Online Date：2025-12-23
  • Published：2022-07-20
Article Data
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History
  • Received：2021-08-06
  • Revised：2021-10-13
Funding
Affiliations
    1State Grid Tibet Electric Power Co., Ltd., Lasa 850000, China
    2Beijing State Grid Xintong Accenture Information Technology Co., Ltd., Beijing 100031, China
    3Central China Branch of State Grid Corporation of China, Wuhan 430077, China
    4State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
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https://castjournals.cast.org.cn/joweb/jycl/EN/10.16790/j.cnki.1009-9239.im.2022.07.012
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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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