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Effect of Aggregation Morphology of Copper Products on Performance of Transformer Oil
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Haidan LIN1, Mengzhu HU2, Jinfeng SI3, Haifeng ZHANG3
Insulating Materials | 2022, 55(8) : 59 - 63
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Insulating Materials | 2022, 55(8): 59-63
• Insulation Technology •
Effect of Aggregation Morphology of Copper Products on Performance of Transformer Oil
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Haidan LIN1, Mengzhu HU2, Jinfeng SI3, Haifeng ZHANG3
Affiliations
  • 1Electric Power Research Institute of Jilin Electric Power Co., Ltd., Changchun 130012, China
  • 2Electric Power Science Pesearch Institute of Guangxi Electric Grid Co., Ltd., Nanning 530000, China
  • 3School of Chemistry Engineering, Northeast Electric Power University, Jilin 132012, China
Published: 2022-08-20 doi: 10.16790/j.cnki.1009-9239.im.2022.08.010
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In this paper, the aggregation morphology of copper products in transformer oil and its influence on the ageing performance of transformer oil were investigated. The aggregation morphology of copper products in oil were tested by molecular weight distribution test method, and the ageing properties of oil samples were also analyzed periodically. The results show that the distribution of copper products changes with the ageing time obviously. The proportion of ionic copper decreases gradually with the ageing time, while the proportion of colloidal and suspended copper exhibit a tendency of continuous accumulation. The acid value and dielectric loss factor of the transformer oil increase significantly with ageing time, while the breakdown voltage decreases continuously. The concentration of ionic, colloidal, and suspended copper are positively correlated with the acid value and dielectric loss factor, and negatively correlated with the breakdown voltage.

transformer oil  /  copper products  /  aggregation morphology  /  ageing characteristics
Haidan LIN, Mengzhu HU, Jinfeng SI, Haifeng ZHANG. Effect of Aggregation Morphology of Copper Products on Performance of Transformer Oil[J]. Insulating Materials, 2022 , 55 (8) : 59 -63 . DOI: 10.16790/j.cnki.1009-9239.im.2022.08.010
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Article Info
doi: 10.16790/j.cnki.1009-9239.im.2022.08.010
  • Receive Date：2021-08-15
  • Online Date：2025-12-23
  • Published：2022-08-20
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History
  • Received：2021-08-15
  • Revised：2021-09-20
Funding
Affiliations
    1Electric Power Research Institute of Jilin Electric Power Co., Ltd., Changchun 130012, China
    2Electric Power Science Pesearch Institute of Guangxi Electric Grid Co., Ltd., Nanning 530000, China
    3School of Chemistry Engineering, Northeast Electric Power University, Jilin 132012, China
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https://castjournals.cast.org.cn/joweb/jycl/EN/10.16790/j.cnki.1009-9239.im.2022.08.010
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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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