600MW汽包炉给水系统的模型辨识  

Model Identification of 600MW Subcritical Boiler Feedwater System

作　　者：孙明[1] 韩璞[1] 张妍[1] 吕正鑫 

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2期433-437,共5页Computer Simulation

基　　金：中央高校基本科研业务费专项资金项目(2014ZP12)

摘　　要：建立亚临界机组的汽包水位模型,有利于三冲量给水控制系统的控制器参数的整定与优化。传统的飞升曲线法辨识汽包水位模型需要分别作给水流量扰动和蒸汽流量扰动试验,两者耦合性强,试验难度大。通过挖掘湛江电厂1号机组的历史运行数据,采用闭环智能辨识的建模和验模方法,建立了给水系统被控对象的两输入一输出传递函数模型。仿真研究结果表明了闭环辨识模型与理论分析模型的一致性,从而验证了闭环辨识方法的有效性。Subcritical unit drum level modeling is beneficial to tuning and optimizing PID controller parameters of the three-element cascade feedwater control system. Feedwater flow and steam flow disturbance test of traditional step response curve method not only has strong coupling but also has difficult test in drum level modeling. This paper establishes two-input one-output transfer function model of feedwater system by mining historical data of Zhanjiang Power Plant Unit 1 and by using closed-loop intelligent identification. The simulation results show that the closed-loop identification model is consistent with the theoretical analysis model,which proves the effectiveness of the closed-loop identification method.

关 键 词：亚临界机组 汽包水位 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]