A subspace based method for modelling building’s thermal dynamic in district heating system and parameter extrapolation verification

作     者：Junfeng Zhang Lanbin Liu Yameng Liu Junfeng Zhang;Lanbin Liu;Yameng Liu

作者机构：University of Science and Technology Beijing30 Xueyuan RoadBeijing100083China Beijing Nuanliu Technology Co.Ltd.Beijing100083China 

出 版 物：《Building Simulation》 (建筑模拟（英文）)

年 卷 期：2023年第16卷第11期

页      面：2145-2158页

核心收录：

学科分类：08[工学] 081404[工学-供热、供燃气、通风及空调工程] 0814[工学-土木工程] 

主　　题：modelling district heating system state-space ARX thermal dynamics 

摘      要：The district heating system(DHS)consumes a lot of energy in winter,and its control accuracy needs to be improved *** apply advanced process control(APC)in DHS,the thermal dynamic model of the existing buildings is *** paper uses the subspace method which is a data-driven approach for modelling the thermal dynamics of the *** model’s performance is analyzed using the collected data,and the differences compared to the classical methods are also *** method reduces the RMSE by about 20%compared with the ARX model for the same ***,the analysis of the training residuals indicates that the estimate of periodic intra-building disturbance can be obtained by minimizing the training *** introducing the estimated disturbance function,the RMSE on the test set is further reduced by 26%.At the end of the article,a simple parameter extrapolation experiment is conducted,and the result shows that the parameters can be extrapolated to other buildings without large errors.