摘要
牵引变压器是牵引供电系统的重要组成部分之一,对其DGA成分和含量进行在线监测并进行故障判断,能有效地提高电气化铁路运行可靠性。目前对变压器的故障性质判断大多是根据IEC三比值法进行的。而实践中,一些DGA结果与已存在的IEC编码不符,或造成缺码现象。论文采用模糊三比值诊断法进行故障性质判断能有效地解决这一问题。
Traction transformer is one of important components of the traction power supply system, monitoring ingredient and content of DGA can discover its running problem, thereby avoid availably railway running accidents caused by traction transformer.The paper ameliorates the IEC three-ratio codes and establishes a mathematic model and fuzzy diagnosis matrix for diagnosis, which realizes multilevel diagnosis for traction transformer.
出处
《中国测试技术》
2005年第4期47-48,62,共3页
CHINA MEASUREMENT & TESTING TECHNOLOGY
关键词
牵引变压器
牵引供电系统
DGA
在线监测
模糊三比值
Traction transformer
Traction power supply system
DGA
Online monitoring
Fuzzy diagnosis
