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Moisture Absorption and Flashover Properties of Insulators Polluted with Typical Non-soluble Contaminates in Various Environment Humidity
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Yuandong WANG1, Wenjiang SHI1, Zhongyi YANG2, 3, Xingliang JIANG2, Chao ZHANG1, Zhijin ZHANG2
Insulating Materials | 2021, 54(5) : 92 - 97
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Insulating Materials | 2021, 54(5): 92-97
• Test and Analysis •
Moisture Absorption and Flashover Properties of Insulators Polluted with Typical Non-soluble Contaminates in Various Environment Humidity
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Yuandong WANG1, Wenjiang SHI1, Zhongyi YANG2, 3, Xingliang JIANG2, Chao ZHANG1, Zhijin ZHANG2
Affiliations
  • 1Maintenance Branch, State Grid Inner Mongolia East Electric Power Co., Ltd., Tongliao 028114, China
  • 2State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400044, China
  • 3School of Electrical and Information Engineering, Changsha University of Science and Technology, Changsha 410114, China
Published: 2021-05-20 doi: 10.16790/j.cnki.1009-9239.im.2021.05.014
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Polluted insulators are easy to discharge or even flashover when the surface is wet to a certain extent, which seriously threatens the safety and stability of power grid. In this paper, in view of three kinds of common insoluble contaminates SiO2, Al2O3, Fe2O3, we conducted water absorption tests and insulator flashover tests under different environmental humidity, and the influence of environment humidity on the water absorption and flashover properties of insulators polluted with typical insoluble contaminates were analyzed. The results show that the SiO2 has the best water absorption property, the Al2O3 is followed, and the Fe2O3 has extremely weak water absorption property or cannot absorb water absolutely. The moisture absorption rate and saturated moisture content of SiO2 and Al2O3 tend to increase with the increase of environment humidity. In the situation of saturated humidity, the surface contamination of insulators polluted by SiO2 and Al2O3 may be washed away with the dripping process of liquid droplets. The pollution flashover voltage gradient of insulators decreases with the increase of environmental humidity, and this phenomenon is more obvious in low humidity.

insulator  /  non-soluble contaminate  /  environment humidity  /  water absorption property  /  flashover property
Yuandong WANG, Wenjiang SHI, Zhongyi YANG, Xingliang JIANG, Chao ZHANG, Zhijin ZHANG. Moisture Absorption and Flashover Properties of Insulators Polluted with Typical Non-soluble Contaminates in Various Environment Humidity[J]. Insulating Materials, 2021 , 54 (5) : 92 -97 . DOI: 10.16790/j.cnki.1009-9239.im.2021.05.014
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doi: 10.16790/j.cnki.1009-9239.im.2021.05.014
  • Receive Date：2020-07-01
  • Online Date：2026-03-03
  • Published：2021-05-20
Article Data
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History
  • Received：2020-07-01
  • Revised：2020-08-11
Funding
Affiliations
    1Maintenance Branch, State Grid Inner Mongolia East Electric Power Co., Ltd., Tongliao 028114, China
    2State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400044, China
    3School of Electrical and Information Engineering, Changsha University of Science and Technology, Changsha 410114, China
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https://castjournals.cast.org.cn/joweb/jycl/EN/10.16790/j.cnki.1009-9239.im.2021.05.014
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
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Genus		 种数
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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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