一起220kV变压器高压侧套管乙炔含量超标原因分析  

Cause Analysis of Acetylene Content Exceeding Standard in High Voltage Side Bushing of 220kV Transformer

作　　者：谷应科 黄龙 杨旭琼 郝梓涵 方毅平 彭劢 GU Yingke;HUANG Long;YANG Xuqiong;HAO Zihan;FANG Yiping;PENG Mai(Changsha Power Supply Branch,State Grid Hunan Electric Power Co.,Ltd.,Changsha,410000,China;Guangdong Zhongshan Power Supply Bureau of China Southern Power Grid Co,Ltd.,Zhongshan,528400,China;Extra High Voltage Substation Company,State Grid Hunan Electric Power Co.,Ltd.,Changsha 410004,China)

机构地区：[1]国网湖南省电力有限公司长沙供电分公司,湖南长沙410000 [2]南方电网广东中山供电局,广东中山528400 [3]国网湖南省电力有限公司超高压变电公司,湖南长沙410004

出　　处：《变压器》2024年第1期66-69,共4页Transformer

摘　　要：本文中作者针对检修过程中发现的一起220kV主变高压侧B相套管乙炔超标现象,结合套管诊断试验、解体检查、结构分析,提出套管储油柜内定心螺母圆形无缺口使定心螺母无法完全拧紧是导致本起套管色谱异常的原因。In this paper,according to the phenomenon of excessive acetylide in B-phase casing of 220kV high pressure side of the main transformer found in the maintenance process,combined with casing diagnostic test,disassembly inspection and structural analysis,it is proposed that the circular centering nut in the casing oil tie without a gap can not be completely tightened,which leads to the abnormal color of the casing.

关 键 词：变压器 套管 乙炔 故障分析 

分 类 号：TM406[电气工程—电器]