SUN Zhenhua, ZOU Xuewei, OUYang li, et al. Fault Analysis and Processing of Off-Circuit Tap-Changer for 110 kV Transformer[J]. 2018, 38(6): 49-51.DOI:
110kV变压器无励磁分接开关缺陷的分析与处理
摘要
文章介绍一台110kV变压器35 kV侧三相直流电阻不平衡率超标案例
通过分析试验现象及数据
结合无励磁分接开关结构型式
初步判断其原因系无励磁分接开关C相公共接点松动所致。最后
通过吊罩检修处理
确定了分析的正确性。
Abstract
This paper introduces a case of 110 k V transformer which has existed three-phase DC resistance imbalance in 35 kV side.By analyzing the test phenomena and the test data
and combined with the structure type of Off-Circuit Tap-Changer(OCTC)
it can been speculated that the reason is C-phase common contact loose.Finally
the repair process of crane hood shows the analysis is valid.