Analysis and Countermeasures of Oil Immersed Inverted Current Defect

doi:10.3969/j.issn.1008-0198.2022.02.015

Hunan Electric Power ›› 2022, Vol. 42 ›› Issue (2): 80-84.doi: 10.3969/j.issn.1008-0198.2022.02.015

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Analysis and Countermeasures of Oil Immersed Inverted Current Defect

XU Peng, CUI Guanglu, GAN Qiang, CHEN Hao, ZHANG Haihua, TAN Fenglei

State Grid Jiangsu Electric Power Company Limited Super High Voltage Branch Company, Nanjing 211102, China

Received:2021-12-08 Revised:2021-12-24 Published:2025-08-05

Abstract

Abstract: In this paper, the batch defects of a 500 kV oil immersed current transformer were investigated. Through the diagnosis test and disassembly analysis, the main reasons for the defects of this type of current transformer are found to be the local wrinkled paper damage caused by the extrusion and friction between the body and the oil conservator. Under the high frequency overvoltage, the local wrinkled paper breaks down to produce acetylene. Finally, the corresponding suggestions and measures are put forward to provide reference for fault diagnosis and operation maintenance of the same type of current transformer.

Key words: oil immersed current transformer, failure cause , batch defects, disintegration analysis

CLC Number:

TM452

XU Peng, CUI Guanglu, GAN Qiang, CHEN Hao, ZHANG Haihua, TAN Fenglei. Analysis and Countermeasures of Oil Immersed Inverted Current Defect[J]. Hunan Electric Power, 2022, 42(2): 80-84.

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Analysis and Countermeasures of Oil Immersed Inverted Current Defect

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