基于PLC控制器在火电站除灰控制系统中的应用

Application of PLC Controller in Ash Handling Control System of Thermal Power Station

以某330MW燃煤电站项目气力除灰控制系统为研究对象,介绍了除灰系统的工艺以及PLC控制系统的组成、控制逻辑说明、程序编写方案等,并着重介绍了除灰系统的自动清堵功能,通过PLC程序上的优化,不但提高了自动化水平、减少人工操作环节、而且降低了堵管的概率,从而保证了除灰的效率,提高了系统的稳定性。

The pneumatic ash removal control system of a 330 MW coal-fired power plant project is taken as the research object, this paper introduces the process of the ash removal system, the composition of the PLC control system, the control logic description, the program preparation scheme, etc., and focuses on the automatic anti-blocking function of the ash removal system. Through the optimization of PLC program, the automation level is improved, the manual operation is reduced, and the probability of pipe blockage is reduced Thus, the efficiency of ash removal is ensured and the stability of the system is improved.