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Ageing Evaluation Technology of Transformer Insulating Paper Based on Methanol Content in Oil
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Xueying YANG1, Zonghong LI1, Jialu ZHOU2, Yufeng SONG1, Xueting CHENG1
Insulating Materials | 2022, 55(1) : 67 - 72
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Insulating Materials | 2022, 55(1): 67-72
• Insulation Technology •
Ageing Evaluation Technology of Transformer Insulating Paper Based on Methanol Content in Oil
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Xueying YANG1, Zonghong LI1, Jialu ZHOU2, Yufeng SONG1, Xueting CHENG1
Affiliations
  • 1Yunnan Electric Power Research Institute of China Southern Power Grid, Kunming 650217, China
  • 2Pu'er Power Supply Bureau of China Southern Power Grid, Pu'er 665000, China
Published: 2022-01-20 doi: 10.16790/j.cnki.1009-9239.im.2022.01.011
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The correlation between methanol content and polymerization degree of insulating paper was studied through the detection and analysis of ageing characteristic product methanol of insulating paper, and the characteristic parameter of methanol content in oil, which can characterize the ageing state of insulating paper, was put forward. The results show that there is a good linear correlation between the polymerization degree logarithm of insulating paper and the methanol content, and the linear correlations are highly similar under different experimental conditions, which can be expressed as lnDP=aC+b. The characteristic values of methanol content in oil proposed for transformers with different voltage levels can judge the ageing state of insulating paper effectively, and thus the operation status of transformer can be diagnosed and evaluated.

insulating paper  /  ageing  /  methanol
Xueying YANG, Zonghong LI, Jialu ZHOU, Yufeng SONG, Xueting CHENG. Ageing Evaluation Technology of Transformer Insulating Paper Based on Methanol Content in Oil[J]. Insulating Materials, 2022 , 55 (1) : 67 -72 . DOI: 10.16790/j.cnki.1009-9239.im.2022.01.011
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Article Info
doi: 10.16790/j.cnki.1009-9239.im.2022.01.011
  • Receive Date：2021-03-10
  • Online Date：2025-12-23
  • Published：2022-01-20
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History
  • Received：2021-03-10
  • Revised：2021-04-20
Funding
Affiliations
    1Yunnan Electric Power Research Institute of China Southern Power Grid, Kunming 650217, China
    2Pu'er Power Supply Bureau of China Southern Power Grid, Pu'er 665000, China
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表12种不同金属材料的力学参数
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Family		 属数
Number of
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Number of
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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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