选择性串级控制在CS3000系统中的实现

Configuration and Practice of Selectivity Cascade Control in CS3000 System

加热炉出口温度控制是炼油、化工中经常运用的控制方案,加热炉可同时燃烧燃料油和燃料气,加热炉出口温度控制分别与加热炉燃料油压力控制、燃料气压力控制组成选择性串级控制。介绍了如何在控制方案上实现平衡无扰动切换,充分利用DCS的功能,进行编程实现该功能,特点是组态方便,便于理解,能够充分满足生产操作要求。

Temperature control of heating furnace outlet is often applied in petroleum refinery and chemical industry.Heating furnace can use oil and gas as fuel at the same time.Temperature of heating furnace outlet can form selectivity cascade control with fuel oil pressure and gas pressure.How to keep switch's balance without interference,We utilize function of DCS fully to accomplish the function through programming.It is convenient to make configuration and comprehend.It can realize demands of operator completely.