油浸纸式变压器套管隐性绝缘缺陷案例分析  

A Case Analysis of the Hidden Insulation Defect of Oil-immersed Paper Transformer Bushing

作　　者：苏全 张伟明 SU Quan;ZHANG Weiming(Guangzhou Yueneng Power Technology Development Co.,Ltd.,Guangzhou 510000,China)

机构地区：[1]广州粤能电力科技开发有限公司,广东广州510000

出　　处：《电工技术》2024年第24期212-214,共3页Electric Engineering

摘　　要：针对一起220 kV油浸纸式变压器套管隐性绝缘缺陷,利用三比值法和大卫三角形法对变压器局部放电试验后的油中溶解气体进行分析,以判断油浸纸式变压器套管存在的缺陷类型和产生缺陷的原因。This paper introduces a case of 220 kV oil-immersed paper-type transformer bushing recessive insulation defect.Three-ratio method and Duval Triangle method are used to analyze the dissolved gas in oil after partial discharge(PD)test,and to judge the types and causes of the defects in oil-immersed paper-type transformer bushings.

关 键 词：油浸纸式变压器套管 绝缘缺陷 局部放电 特征气体 

分 类 号：TM406[电气工程—电器]