Model Identification Based on Subspace Model Identification of Main Steam Temperature in Ultra-Supercritical Coal-Fired Power Unit  

作　　者：陈世和 张曦 阎威武 胡勇 邵慧鹤 

机构地区：[1]Guangdong Electric Power Research Institute, Guangzhou 510600, China [2]School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China

出　　处：《Journal of Donghua University(English Edition)》2016年第5期724-728,共5页东华大学学报（英文版）

基　　金：National Natural Science Foundation of China(No.60974119)

摘　　要：Ultra-supercritical(USC) unit is more and more popular in coal-fired power industry.In this paper,closed-loop identification based on subspace model identification(SMI) is introduced for superheated steam temperature system of USC unit.Closed-loop SMI is applied to building step response model of the unit directly.The parameters selection method is proposed to deal with the parameter sensitivity and improve the reliability of the model.Finally,the model is used in model identification of real USC unit.Ultra-supercritical（USC） unit is more and more popular in coal-fired power industry.In this paper,closed-loop identification based on subspace model identification（SMI） is introduced for superheated steam temperature system of USC unit.Closed-loop SMI is applied to building step response model of the unit directly.The parameters selection method is proposed to deal with the parameter sensitivity and improve the reliability of the model.Finally,the model is used in model identification of real USC unit.

关 键 词：supercritical steam spray fired matrices desired outlet subspace operated basically 

分 类 号：TP11[自动化与计算机技术—控制理论与控制工程]