Diagnosis and Analysis of Metal Expander Punching Defect of Oil-immersed Current Transformer
2023 IEEE 6th International Conference on Automation, Electronics and Electrical Engineering (AUTEEE)(2023)
摘要
In this paper, a 220 kV oil-immersed upright current transformer metal expander punching defect is studied. Through the routine test, diagnostic test and disintegration inspection of the current transformer, it is determined that the insulation paper of the intermediate screen is not completely dry, resulting in low-energy discharge during operation, resulting in a large amount of gas and metal expander punching. Finally, relevant measures and suggestions are put forward to prevent the occurrence of this defect.
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关键词
current transformer,capacitance screen,low energy discharge
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