600MW燃煤机组燃烧系统的建模方法研究  

Research on Modeling Method of 600MW Coal-Fired Units' Combustion System

作　　者：孙明[1] 韩璞[1] 程海燕[1] 吴冠鸿 

机构地区：[1]华北电力大学河北省发电过程仿真与优化控制工程技术研究中心,河北保定071003

出　　处：《计算机仿真》2016年第1期416-419,共4页Computer Simulation

摘　　要：建立热工系统的传递函数模型,既有利于了解机组的运行特性,又便于控制方案的设计和控制器的参数整定。为了避免开环辨识法对机组运行的扰动大的问题,文中采用了基于机组历史运行数据的闭环智能辨识方法,以两输入两输出的燃烧控制系统为例,通过对象特性分析,确定传递函数模型结构,以粒子群算法进行模型参数寻优,最后进行了模型的验证。仿真结果表明了该闭环辨识方法的有效性和辨识模型的正确性。The transfer function model of thermal system is not only for understanding operation features of unit, but also for the design of control scheme and the parameters tuning of PID controllers. In order to avoid the disturb- ance of open-loop identification method to the normal operation of unit, the closed-loop intelligent identification method based on the unit operation historical data was proposed in this paper. Illustrated by the case of combustion control system with two inputs and two outputs, we analyzed the characteristics of the controlled objects, determined the transfer function model structures, and optimized the model parameters with particle swarm optimization algo- rithm. Finally, we validated the models. The simulation results show the effectiveness of the closed-loop identifica- tion method and the correctness of identification models.

关 键 词：亚临界燃煤机组 燃烧系统 粒子群优化 数据辨识 

分 类 号：TK229.2[动力工程及工程热物理—动力机械及工程]