一起低压绕组采用自粘换位导线绕制的220kV变压器故障分析  

Fault Analysis of 220kV Transformer Composed of Transposed Conductor

作　　者：李中祥 郑盈盈 李刚 付欢球 罗鹏飞 洪志敏 LI Zhong-xiang;ZHENG Ying-ying;LI Gang;FU Huan-qiu;LUO Peng-fei;HONG Zhi-min(TBEA Co.,Ltd.,Hengyang 421007,China;National Electric Power Conversion and Control Engineering Technology Research Center,Hunan University,Changsha 410082,China)

机构地区：[1]特变电工衡阳变压器有限公司,湖南衡阳421007 [2]国家电能变换与控制工程中心(湖南大学),湖南长沙410082

出　　处：《变压器》2020年第7期75-79,共5页Transformer

摘　　要：介绍和分析了一起220kV变压器短路故障的产生及检查情况,并对该变压器进行了抗短路能力复核,提出换位导线在长时间热效应下的自粘失效为本次故障发生的主要原因。The occurrence and inspection of a 220 kV transformer short-circuit fault is introduced and analyzed. The short-circuit resistance of the transformer is checked. The glueing failure of transposed conductors under long-term thermal effect is the main cause of this fault.

关 键 词：变压器 短路 热稳定 换位导线 粘结强度 

分 类 号：TM407[电气工程—电器]