SUN Wei, FANG Yi-ping, CHEN Bo, et al. Analysis on TA abnormality of 220 kV cassette metal expander[J]. 2013, 33(3): 45-46+53.DOI:
220kV盒式金属膨胀器引起TA异常分析
摘要
结合220 kV云桂Ⅰ线606 C相电流互感器相关缺陷和隐患
介绍各种金属膨胀器的用途和结构
分析和探讨此类TA出现缺陷和异常现象的原因
并针对盒式金属膨胀器存在的缺陷提出检修和改造建议。
Abstract
According to the defects and hidden danger of the current transformer of 606 phase C in 220 kV Yungui Ⅰ line
the use and structure for various kinds of metal expander is introduced.The reasons of defect and abnormal phenomenon appeared in CT are analysed and discussed
and the maintenance and modification suggestions are put forward aiming at the limitation of cassette metal expander.