基于辐射能信号的锅炉燃料调节特性研究

发布时间：2018-03-26 02:21

本文选题：辐射能信号　切入点：燃烧系统　出处：《华中科技大学学报(自然科学版)》2017年11期

【摘要】：利用炉膛内辐射能信号快速反映燃烧率的能力,将辐射能信号引入到锅炉燃料控制系统中,分析了辐射能信号参与燃料控制的优势.根据机组运行负荷不同而炉内燃烧存在差异的特点,以辐射能信号作为中间变量利用分段辨识的方法建立燃烧系统的数学模型.研究结果表明该方法较原控制系统超前30~45s完成入炉燃料量的调整.针对锅炉两种不同制粉系统,分别计算了炉膛辐射能信号响应燃料量变化的动态时间以及与机组负荷的对应关系,对辐射能信号在燃烧系统中动态时间的量化与分析,为其参与炉内燃烧调整提供数据支持.
[Abstract]:The radiation energy signal is introduced into the boiler fuel control system by using the ability of reflecting the combustion rate quickly by the radiation energy signal in the furnace. The advantages of radiation energy signal in fuel control are analyzed. The mathematical model of combustion system is established by using the method of segmented identification with radiative energy signal as intermediate variable. The results show that the fuel quantity of the combustion system is adjusted by the method 30 ~ 45s ahead of the original control system. In view of two different pulverizing systems of boiler, The dynamic time of the furnace radiant energy signal responding to the change of fuel quantity and the corresponding relationship with the unit load are calculated respectively. The quantification and analysis of the dynamic time of the radiation energy signal in the combustion system are carried out, which provides data support for the furnace combustion adjustment.
【作者单位】：淮海工学院新能源研究所;华北电力大学电站设备状态监测与控制教育部重点实验室;
【基金】：国家自然科学基金资助项目(51406095)
【分类号】：TM621.2

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