基于导前微分的锅炉动态加速控制策略研究  

Research on Boiler Dynamic Acceleration Control Strategy Based on Leading Differential

作　　者：葛朋 吕春颖 孙哲 刘超 GE Peng;LYU Chunying;SUN Zhe;LIU Chao(CHN Energy Shuangliao Power Generating Co.,Ltd.,Shuangliao 136400,China)

机构地区：[1]国能双辽发电有限公司,吉林双辽136400

出　　处：《自动化仪表》2021年第7期63-67,共5页Process Automation Instrumentation

摘　　要：为解决超临界燃煤发电机组协调控制方式下锅炉设备动态响应滞后的问题,合理设计并使用锅炉输入变化率(BIR)控制策略在机组变负荷初期对锅炉各子系统增加适当的提前控制量,全面加快锅炉燃烧动态响应速度,满足锅炉主汽压力和机组负荷的控制要求。基于导前微分的锅炉动态加速控制策略,相比传统的控制策略设计简单,可调参数少。在以每分钟1.5%额定功率的负荷变化率下连续加减负荷,主汽压力偏差不超过±0.5MPa,主汽温度偏差不超过±6t。该研究在600MW、1000MW超临界燃煤发电机组的协调系统中有较强的实用性,对工业控制领域中快、慢被控对象协同工作的系统也有一定的借鉴意义。To resolve the dynamic response lagging problem of boiler equipment in supercritical coal-fired power generating units under coordinated control mode,the boiler input rating(BIR)strategy is designed and used properly.In the early stage of unit load varying period,control variables for subsystems in the boiler are regulated properly in advance to fully speed up dynamic response of boiler combustion and satisfy the control requirements about main-steam pressure and unit load.Boiler dynamic acceleration control strategy based on leading differential is simpler in design and has less regulation parameters than traditional control strategies.While the load keeps continuously increasing or decreasing at a load variable rate of 1.5%rated power per minute,the main steam pressure deviation does not exceed±0.5 MPa,and the main steam temperature deviation does not exceed±6 Tl.It has strong practicability in the coordination system of 600 MW and 1000 MW supercritical coal-fired power generating units,and it also has certain reference significance for the system with collaborative fast and slow controlled objects in the industrial control field.

关 键 词：协调控制 实际微分 前馈 惯性环节 动态加速 主汽压力 负荷响应 锅炉蓄能 

分 类 号：TH-138.1[机械工程]