给煤机控制系统DCS化改造

DCS Transformation of Coal Feeder Control System

利港电厂给煤机大量使用了美国STOCK电子称重式给煤机。随着使用年限的增加,控制板故障率开始提升,原厂备件价格较高。一旦控制板故障无备件更换,导致给煤机停运,机组出力受限。文章介绍了如何将给煤机控制系统并入现有的DCS控制器,利用DCS强大的逻辑组态能力实现给煤机的控制和顺控校验,取消现场控制板,简化控制过程,对于过程参数可以更加直观地呈现,还新增了给煤机的自动校验功能。文章介绍了如何实现改造的流程和校验过程以及取得的较好实际效果。

At present,the coal feeders in power plants use a large number of coal feeders produced by STOCK company.With the increase of service life,the failure rate of the control board began to increase,and the price of original spare parts was higher.Once the control board failure without replacement of spare parts,will lead to the coal feeder shutdown,unit processing limited.This paper introduces how to integrate the coal feeder control system into the existing DCS controller,and use the powerful logic configuration ability of DCS to realize the control and compliance check of the coal feeder,cancel the field control board,simplify the control process,and present some process parameters more intuitively,and adds the automatic check function of the coal feeder.This paper introduces how to realize the process of transformation and calibration and the good practical results.