下瓷套油纸电容式套管故障分析及防范措施  

Failure Analysis and Prevention Measures of Under Porcelain Sets Oil-paper Capacitive Casing

作　　者：马骥峰[1] 刘斯佳[1] 肖烨辉[1] 

机构地区：[1]上海市电力公司检修公司直流运检中心,上海201708

出　　处：《电力与能源》2012年第6期531-534,共4页Power & Energy

摘　　要：介绍了2012年1月31日南桥换流站极1换流变A相本体顶盖和左侧底部发生漏油、阀侧2.1号套管顶部外罩鼓起的事故现象和经过。通过查看故障跳闸的相关保护录波记录,分析电流曲线、推断故障特性及故障点,得出套管发生故障的主要原因是长期运行中产生的衍生物、分解物、溶解物等所致,造成介质劣化和场强畸变,并在下瓷套油纸电容式套管设计上存在缺陷。建议更换为目前使用量大、运行良好的油纸SF6气体套管或者胶纸SF6气体套管。Introduced the accident phenomenon in Southbridge converter station for rheological Phase A body top and left bottom of the fuel leaks, valve side of the top of the casing cover muster 2. 1 on January 31,2012. View fault trip protection recorded wave recording and analysis of the current curve, inferred fault characteristics and fault point, come to the casing of the main reasons for failure in the long-running derivatives, due to decomposition, dissolved, resulting in media deterioration and field strong distortion, and the next porcelain sets greaseproof paper condenser bushing design defects. Proposed to replace for the current use of a large amount of a good run oilpaper SF6 gas casing or tape SF6 gas casing.

关 键 词：换流变 套管 下瓷套 油纸绝缘 

分 类 号：TM89[电气工程—高电压与绝缘技术]