锅炉汽包水位串级三冲量控制系统设计与应用  

Design and application of boiler steam level control system based on cascade three-impulse

作　　者：张子才[1] 龚争理[1] 黄良沛[1] 王少力 

机构地区：[1]湖南科技大学湖南省机械设备健康维护重点实验室,湘潭411201 [2]湖南中联重科专用车有限责任公司研发部,长沙410007

出　　处：《国外电子测量技术》2011年第4期43-46,53,共5页Foreign Electronic Measurement Technology

基　　金：湖南科技大学研究生创新基金S090110资助项目

摘　　要：针对锅炉汽包水位存在"虚假水位"的问题,设计了基于锅炉汽包水位串级三冲量给水的控制系统。该系统结合PLC技术和变频器技术在电厂启动锅炉系统中得以应用,结果表明串级三冲量加前馈给水控制系统可以及时消除负荷(蒸汽量)变化和给水流量波动的干扰,较好地克服了虚假水位现象,能够使汽包水位快速达到稳定运行要求,从而对锅炉汽包水位实现了实时的最优控制。In order to solve the problem of false water level existed in boiler steam drum level,a boiler steam level control system based on cascade three-impulse is proposed. Together with PLC technology and frequency inverter technology, the system has been used in practical application. The results show that three-impulse cascade plus feedforward control sys tem can promptly eliminate the interference of vapor load and rate fluctuation of feedwater,and overcome the false water phenomenon. The system can make the water keep stable operation, so it realize the real-time and optimal control of boiler steam drum level.

关 键 词：虚假水位 汽包水位串级三冲量 PID 

分 类 号：TB114.2[理学—运筹学与控制论]