750kV三相一体变压器放电原因分析  

Cause Analysis of Discharge of 750 kV Three-Phase Integrated Transformer

作　　者：樊新鸿 刘林壁 谢延凯 张正渊 陈宏刚 王永奇 FAN Xinhong;LIU Linbi;XIE Yankai;ZHANG Zhengyuan;CHEN Honggang;WANG Yongqi(SGCC Gansu Electric Power Research Institute,Lanzhou,730070,China;CEEC Gansu Electric Power Design Institute,Lanzhou,730050,China)

机构地区：[1]国网甘肃省电力公司电力科学研究院,甘肃兰州730070 [2]中国能源建设集团甘肃省电力设计院有限公司,甘肃兰州730050

出　　处：《电工技术》2020年第20期85-87,共3页Electric Engineering

摘　　要：变压器的状态是否正常关系到电力系统的安全可靠稳定运行。文章以一起750 kV三相一体变压器局部放电试验过程中发生的放电事故为例,分析了局部放电试验前后不同部位油中溶解气体的分布情况,以及发生放电后油中溶解气体的扩散过程,初步判断了故障部位,并通过内部检查得到了验证。Whether the state of transformer is normal or not is related to the safe,reliable and stable operation of power system.In view of a discharge accident in the process of partial discharge test of 750 kV Three-Phase integrated transformer,the distribution of dissolved gas in oil before and after PD test and the diffusion process of dissolved gas in oil after PD test were analyzed.The fault location was preliminarily determined and verified by internal inspection.

关 键 词：750kV三相一体变压器 放电 油中溶解气体分析 

分 类 号：TM407[电气工程—电器]