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基于机制模型与数据驱动的超临界锅炉性能在线预测方法

DOI: 10.13334/j.0258-8013.pcsee.2015.10.015, PP. 2487-2494

Keywords: 状态监测,软测量,电站锅炉,在线预测,性能

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Abstract:

基于关联矩阵描述锅炉热力系统拓扑结构,给出锅炉烟气、空气和水流程的质量守恒方程、能量守恒方程和动量守恒方程及其求解方法;结合建立的锅炉换热部件算法模型,得到锅炉热力系统的机制模型。基于机制分析和历史数据建立软测量模型,实现对不易直接测量的锅炉热工参数的间接测量。将软测量结果数据再次作为锅炉热力系统机制模型的输入,从而建立锅炉性能分析计算和预测模型。在系统实现技术上,采用基于浏览器/服务器的架构模式,研发支持在线监测的电站锅炉性能分析与预测系统。对一台超临界电站锅炉的性能进行预测计算,验证文中模型和方法的有效性,并根据预测值,实现蒸汽温度的喷水减温控制。

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