摘要
空气预热器采用了变频控制技术,有纯变频及变频加旁路控制方式,但存在连锁启动时变频器跳闸的问题。文章以华电集团长沙电厂600MW机组为例,分析了变频器跳闸的原因,通过改进方案比较,确定了修改空气预热器控制逻辑的方案。
In the frequency conversion control technology of air preheater,there are pure frequency conversion and frequency conversion plus bypass control modes,but the frequency converter tripping problem exists during interlocking start-up.With the 600 MW generating unit in Changsha Power Plant of Huadian Group as example,the paper analyzed the tripping cause of frequency converter,through the comparison of improvement schemes,the improvement scheme to revise the control logic of air preheater was determined,the ac...
出处
《电力设备》
2008年第12期98-100,共3页
Electrical Equipment
关键词
空气预热器
变频器
连锁启动
跳闸原因
air preheater
frequency converter
interlocking start-up
tripping cause
