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Theoretical model and validation of moisture equilibrium curves for new oil-paper insulation system
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Shuhui WANG1, Ge CHEN2, Xin CHEN3, Liang ZHU1, Dawei FENG1
Insulating Materials | 2025, 58(5) : 73 - 80
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Insulating Materials | 2025, 58(5): 73-80
• Insulation Technology •
Theoretical model and validation of moisture equilibrium curves for new oil-paper insulation system
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Shuhui WANG1, Ge CHEN2, Xin CHEN3, Liang ZHU1, Dawei FENG1
Affiliations
  • 1. Key Laboratory of Electromagnetic Field and Electrical Apparatus Reliability of Hebei Province, Hebei University of Technology, Tianjin 300130, China
  • 2. Zhangjiakou Power Supply Company, State Gid Jibei Eectric Power Co., Ltd., Zhangjiakou 075000, China
  • 3. State Grid Wuxi Power Supply Company, Wuxi 214061, China
Published: 2025-05-20 doi: 10.16790/j.cnki.1009-9239.im.2025.05.010
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There are many types of insulating oils and insulating papers with different compositions, which will have different moisture equilibrium curves when they are used in conjunction. To obtain the moisture equilibrium curves of different oil-paper insulation systems, this research constructed a moisture equilibrium curve model applicable to new oil-paper insulation systems based on the relative moisture content relationship between oil and paper at moisture equilibrium, and verified the model by combining with the measured results of moisture equilibrium experiments. The results show that under typical operating temperature of transformer, the prediction accuracy of the moisture equilibrium curve model for different oil-paper insulation systems is higher than 90%, confirming the effectiveness of the model.

transformer  /  new oil-paper insulation  /  moisture equilibrium curve  /  theoretical prediction model  /  experiment verification
Shuhui WANG, Ge CHEN, Xin CHEN, Liang ZHU, Dawei FENG. Theoretical model and validation of moisture equilibrium curves for new oil-paper insulation system[J]. Insulating Materials, 2025 , 58 (5) : 73 -80 . DOI: 10.16790/j.cnki.1009-9239.im.2025.05.010
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Article Info
doi: 10.16790/j.cnki.1009-9239.im.2025.05.010
  • Receive Date：2024-07-05
  • Online Date：2025-12-04
  • Published：2025-05-20
Article Data
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History
  • Received：2024-07-05
  • Revised：2024-09-09
Funding
Affiliations
    1. Key Laboratory of Electromagnetic Field and Electrical Apparatus Reliability of Hebei Province, Hebei University of Technology, Tianjin 300130, China
    2. Zhangjiakou Power Supply Company, State Gid Jibei Eectric Power Co., Ltd., Zhangjiakou 075000, China
    3. State Grid Wuxi Power Supply Company, Wuxi 214061, China
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https://castjournals.cast.org.cn/joweb/jycl/EN/10.16790/j.cnki.1009-9239.im.2025.05.010
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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
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
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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