循环流化床锅炉风烟系统的多模态建模与时序分析  

Multi-mode Modeling of the Air and Flue Gas System of a Circulating Fluidized Bed Boiler and Analysis of Its Time Sequence

作　　者：房方[1] 陈丽雪 李昭[1] FANG Fang;CHEN Xue-li;LI Zhao(College of Control and Computer Engineering, North China University of Electric Power, Beijing, China,Post Code： 102206)

机构地区：[1]华北电力大学控制与计算机工程学院

出　　处：《热能动力工程》2018年第2期87-95,共9页Journal of Engineering for Thermal Energy and Power

基　　金：国家自然科学基金(51676068)~~

摘　　要：由于循环流化床锅炉结构复杂、运行模态多变，为对其动静态特性进行准确描述和有效分析，提出一种基于组件的风烟系统多模态建模与时序分析方法：首先，根据模态切换过程中各相关设备和物理量之间的关联关系，建立系统的模态感知模型；然后，通过从系统点火准备至点火完成中多模态切换过程的时间统计，实现关键设备及参数的时序分析。以宁夏宁东330Mw循环流化床锅炉机组为例，采用该方法对引风机启动过程中的故障进行了模拟与诊断，诊断结果证明了所提方法的适用性和有效性。Due to the complexity of the structure and varied operation modes of a circulating fluidized bed boiler,through accurately describing and effectively analyzing its dynamic and static characteristics, proposed was a method for multi-mode modeling and time sequence analyzing a module-based air and flue gas system. First, according to the correlation relationship among relevant equipment items and physical quantities in the process of modes being switched over, a mode perception model for the system was estab- lished. Consequently,through counting the time duration of the process of the modes being switched over from the ignition preparation of the system to the completion of the ignition, a time sequence analysis of the key equipment items and parameters was realized. With a 330 MW circulating fluidized bed boiler unit in Ningdong County of Ningxia province serving as an example, a simulation and diagnosis were conducted of its faults on a simulating machine in the startup process of the forced draft fans. The diagnostic results prove that the method thus proposed is applicable and effective.

关 键 词：循环流化床锅炉机组 风烟系统 组件 多模态建模 时序分析 

分 类 号：TK172[动力工程及工程热物理—热能工程]