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Comparative experiment study on deterioration of oil-paper insulation performance by surface discharge under static and flowing oil conditions
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Jiaming YAN1, Yiheng ZHOU2, Ruijin LIAO3, Jianwen ZHANG1, Haibo DONG1
Insulating Materials | 2023, 56(7) : 52 - 59
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Insulating Materials | 2023, 56(7): 52-59
• Insulation Technology •
Comparative experiment study on deterioration of oil-paper insulation performance by surface discharge under static and flowing oil conditions
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Jiaming YAN1, Yiheng ZHOU2, Ruijin LIAO3, Jianwen ZHANG1, Haibo DONG1
Affiliations
  • 1School of Electrical Engineering, China University of Mining and Technology, Xuzhou 221116, China
  • 2School of Information and Control Engineering, China University of Mining and Technology, Xuzhou 221116, China
  • 3State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400044, China
Published: 2023-07-20 doi: 10.16790/j.cnki.1009-9239.im.2023.07.009
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In this paper, the physicochemical and electrical properties of oil-paper insulation in the process of surface discharge deterioration under static and flowing oil conditions were studied. The discharge product and moisture of oil-paper insulation were analyzed by infrared spectrometer and micro-water measuring instrument. The multilayer microstructure of oil-paper insulation was analyzed by viscosity tester, X-ray diffractometer, and scanning electron microscope. The conductivity, electric strength, and partial discharge of oil-paper insulation were analyzed by electrical measurement. The multi-type discharge deterioration characteristics of oil-paper insulation in static and flowing oil were compared and analyzed. The results show that the flow of oil slows down the surface discharge deterioration of oil-paper insulation, retards the rise of electrical conductivity and the decline of electric strength, and inhibits the occurrence and development of surface discharge. The surface conductivity determines the difficulty of surface discharge, and its increase results in the statistical distribution of surface discharge times showing a repetitive characteristic of "wave" gradually. Discharge frequency determines the surface discharge deterioration and destruction degree of oil-paper insulation, which is an efficient characteristic quantity to evaluate the deterioration state of oil-paper surface discharge.

oil-paper insulation  /  surface discharge  /  oil conditions  /  physicochemical properties  /  electrical properties
Jiaming YAN, Yiheng ZHOU, Ruijin LIAO, Jianwen ZHANG, Haibo DONG. Comparative experiment study on deterioration of oil-paper insulation performance by surface discharge under static and flowing oil conditions[J]. Insulating Materials, 2023 , 56 (7) : 52 -59 . DOI: 10.16790/j.cnki.1009-9239.im.2023.07.009
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doi: 10.16790/j.cnki.1009-9239.im.2023.07.009
  • Receive Date：2022-10-05
  • Online Date：2025-11-24
  • Published：2023-07-20
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History
  • Received：2022-10-05
  • Revised：2023-01-03
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Affiliations
    1School of Electrical Engineering, China University of Mining and Technology, Xuzhou 221116, China
    2School of Information and Control Engineering, China University of Mining and Technology, Xuzhou 221116, China
    3State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400044, China
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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
Number of
species		 占总种数比例
Percentage of total
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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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