This article introduced the principle ,composition and main problems present in our power plants of CEMS. Corresponding countermeasures are also proposed in this paper.

• 本文介绍了烟气在线监测系统的原理、组成以及目前我国火电厂烟气在线监测系统主要存在的问题,并针对这些存在的问题提出了相应的解决方案。