主变调压开关油位异常缺陷分析及处理  

Cause Analysis of Two Mr Voltage Regulating Switch Mechanism Faults and Preventive Measures

作　　者：杨次 YANG Ci

机构地区：[1]深圳供电局有限公司,广东深圳518000

出　　处：《电力系统装备》2023年第8期134-136,共3页Electric Power System Equipment

摘　　要：深圳出现两起主变调压开关油位表指示异常升高,且呼吸器伴有渗漏油现象。文章结合历史缺陷记录及现场缺陷表象,对该油位异常缺陷进行分析判断,排除了油位表缺陷、假油位及环境温升导致油位表异常升高的可能性,并分析其原因为调压开关与本体之间存在渗漏点,经过停电检查发现其原因为档位选择静触头处密封胶圈破损导致。In the power system,two faults occurred in the power system when the voltage reducing switch of the transformer operating state automatically upshifted to the highest gear.The on-site inspection failed to electrically downshift,resulting in abnormal voltage in part of the system and seriously affecting the power quality.This paper analyzes the causes of the two failures and puts forward the rectification and preventive measures,so as to provide reference for similar defects of the same type of equipment in the future.

关 键 词：MR 调压开关 密封 延时保护 

分 类 号：TM862[电气工程—高电压与绝缘技术]