基于SIS的空冷塔液位控制参数优化

Optimization of Liquid Control Parameters of Air Cooling Tower Based on SIS

为提高空冷塔的冷却效率,同时避免在线参数整定对运行设备造成影响,提出一种参数整定方法。基于SIS进行数据分析,辨识出设备的传递函数。进行动态解耦,将原复杂耦合系统转换为单回路控制系统。利用CAE仿真软件完成PID参数整定,进而应用至DCS中,提升了空冷塔出口温度和流量的控制精度,提高了空冷塔冷却效率。

For purpose of improving cooling efficiency of the air cooling tower and avoiding online parameter setting’s influence on the operating equipment,a method of online setting parameters was proposed,including data analysis based on SIS system to identify transfer function of the device;in addition,through dynamic decoupling performed,the original complex coupling system was converted into a single-loop control system,including having CAE simulation software used to complete the setting of PID parameters and then having them applied to DCS system to improve control accuracy of the air cooling tower outlet temperature and flow,as well as the cooling efficiency of air cooling tower.