中国电机工程学报Issue(8)：1261-1267,7.DOI:10.13334/j.0258-8013.pcsee.2014.08.007
电站锅炉总风量软测量
Soft-sensors of the Total Air Volume in Utility Boilers
摘要
Abstract
Since measurement facility for air volume of utility boiler has poor accuracy and is complicated to standardize, a soft-sensor method for total air volume in boiler was presented. By analyzing the relation between coal combustion heat and consumed air, the basic formula for air volume based on heat-oxygen content was constructed, which can eliminate the influence of unburned carbon theoretically, so the heat calculation process was relatively simple. After amending the coal quality and air humidity, by using the dry or wet flue gas oxygen content, the air volume with better accuracy was obtained. After the dynamic compensation of fuel flow, the consistency of dynamic response time between soft-sensor signal and practical signal was ensured. By the experiment in a 600 MW unit, the comparison between soft-sensor signal and practical signal of total air volume under different operation conditions was made. The experiment results show that the soft-sensor signal has the merits of better accuracy and quick dynamic response, and it is insensitive to the changes of coal quality, which can meet the local requirements in the thermal power plant.关键词
锅炉/风量/软测量/机制分析/动态补偿Key words
boiler/air volume/soft-sensor/mechanism analysis/dynamic compensation分类
能源科技引用本文复制引用
田亮,霍秋宝,刘鑫屏,刘吉臻..电站锅炉总风量软测量[J].中国电机工程学报,2014,(8):1261-1267,7.基金项目
国家自然科学基金重点项目(51036002)。Project Supported by National Natural Science Foundation of China(51036002) （51036002）
