电站锅炉再热蒸汽温度的燃烧器摆角和喷水减温协调预测控制  

Coordinated Predictive Control of Boiler Reheated Steam Temperature Using Tilter and Attemperator

作　　者：王东风[1] 李玲 王玉华 WANG Dongfeng;LI Ling;WANG Yuhua(Department of Automation,North China Electric Power University,Baoding 071003,Hebei Province,China)

机构地区：[1]华北电力大学自动化系,河北保定071003

出　　处：《动力工程学报》2018年第7期558-563,571,共7页Journal of Chinese Society of Power Engineering

基　　金：国家自然科学基金资助项目(71471060);高等学校博士学科点专项科研基金资助项目(20120036120013)

摘　　要：针对目前再热汽温控制系统中存在的局限性,从控制算法和切换逻辑2个方面对锅炉再热蒸汽温度控制进行改进,设计了一种使用燃烧器摆角和喷水减温作为再热蒸汽温度调节手段的协调预测控制方法,并将改进后的方法与常规预测控制和串级PID控制进行对比。结果表明:所提出的预测控制方法能实现燃烧器摆角和喷水减温控制的平滑无扰切换,提高了系统的调节性能和稳定性,大大减少了燃烧器摆角调节系统与喷水减温调节系统之间的来回切换次数。To overcome the limitation existing in current reheated steam temperature control systems,a predictive control method was proposed by coordinatedly adjusting the tilter angle and attemperator spray,based on improved control methods for boiler reheated steam temperature from aspects of control algorithm and switching logic,and subsequently the control effectiveness was compared with that of conventional predictive control and cascade PID control.Simulation results show that the method proposed can help to realize smooth swithing between tilter angle adjustment and attemperator spray regulation without any disturbance,thus improving the control performance and operation stability of the system,and lowering the switching frequency between above two ways.

关 键 词：电站锅炉 再热蒸汽温度 燃烧器摆角 喷水减温 预测控制 

分 类 号：TP271[自动化与计算机技术—检测技术与自动化装置]