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Effect of Natural Ester Insulating Oil on Temperature Rise and Overload Characteristics of Winding for Power Transformer
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Yannan LIU1, 2, 3, Haoming WANG1, 2, 4, Zhenbin DU3, Xile ZHANG1, 2, Yajie ZHANG3, Jianmin WANG3
Insulating Materials | 2022, 55(9) : 89 - 95
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Insulating Materials | 2022, 55(9): 89-95
• Test and Analysis •
Effect of Natural Ester Insulating Oil on Temperature Rise and Overload Characteristics of Winding for Power Transformer
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Yannan LIU1, 2, 3, Haoming WANG1, 2, 4, Zhenbin DU3, Xile ZHANG1, 2, Yajie ZHANG3, Jianmin WANG3
Affiliations
  • 1State Key Laboratory of Reliability and Intelligence of Electrical Equipment, Hebei University of Technology, Tianjin 300130, China
  • 2Key Laboratory of Electro-magnetic Field and Electrical Apparatus Reliability of Hebei Province, Hebei University of Technology, Tianjin 300130, China
  • 3Hebei Provincial Key Laboratory of Electromagnetic & Structural Performance of Power Transmission and Transformation Equipment, Baoding Tianwei Baobian Electric Co., Ltd., Baoding 071056, China
  • 4Department of Power Engineering, North China Electric Power University, Baoding 071003, China
Published: 2022-09-20 doi: 10.16790/j.cnki.1009-9239.im.2022.09.015
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A two-dimensional fluid-solid coupling model of 110 kV power transformer was established, the winding temperature rise characteristics of natural ester insulating oil power transformer and mineral insulating oil power transformer were compared and analyzed by finite-volume method, and the correctness of the calculating method was verified through experiments. At the same time, the winding overload characteristics for the same transformer with two insulating oils were compared. The results show that the winding temperature rise of the natural ester insulating oil transformer is slightly higher than that of the mineral insulating oil transformer, and the difference of their hot spot temperature rise is 4.7℃, but the natural ester insulating oil can improve the transformer temperature rise limit by 10 K. Thus, the winding temperature rise characteristics of natural ester insulating oil transformer is better than that of mineral insulating oil transformer. The overload capacity of natural ester insulating oil transformer is better than that of the mineral insulating oil transformer, and the difference between their overload performances expands further as the overload multiplier increases.

natural ester insulating oil power transformer  /  winding temperature rise  /  overload capacity  /  finite-volume method
Yannan LIU, Haoming WANG, Zhenbin DU, Xile ZHANG, Yajie ZHANG, Jianmin WANG. Effect of Natural Ester Insulating Oil on Temperature Rise and Overload Characteristics of Winding for Power Transformer[J]. Insulating Materials, 2022 , 55 (9) : 89 -95 . DOI: 10.16790/j.cnki.1009-9239.im.2022.09.015
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doi: 10.16790/j.cnki.1009-9239.im.2022.09.015
  • Receive Date：2021-09-23
  • Online Date：2025-12-23
  • Published：2022-09-20
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History
  • Received：2021-09-23
  • Revised：2021-10-22
Funding
Affiliations
    1State Key Laboratory of Reliability and Intelligence of Electrical Equipment, Hebei University of Technology, Tianjin 300130, China
    2Key Laboratory of Electro-magnetic Field and Electrical Apparatus Reliability of Hebei Province, Hebei University of Technology, Tianjin 300130, China
    3Hebei Provincial Key Laboratory of Electromagnetic & Structural Performance of Power Transmission and Transformation Equipment, Baoding Tianwei Baobian Electric Co., Ltd., Baoding 071056, China
    4Department of Power Engineering, North China Electric Power University, Baoding 071003, 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
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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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