混合建模方法在蒸汽供热管网建模中的应用  

Application of hybrid modeling method in steam-based heating networks

作　　者：胡佳怡 郑梦莲 HU Jiayi;ZHENG Menglian(Institute of Thermal Science and Power Systems,Zhejiang University,Hangzhou 310027,China)

机构地区：[1]浙江大学热工与动力系统研究所,浙江杭州310027

出　　处：《能源工程》2023年第5期54-61,共8页Energy Engineering

摘　　要：区域供热系统的热力水力建模有助于系统的运行分析及调度,为了避免单一的机理建模和数据驱动建模可能存在的缺陷,本文提出了三种机理—数据驱动混合建模方法,根据建模结构不同分为并联、串联和引导三种方式。结果显示:相比于机理建模方法,采用混合建模方法后预测精度有明显提高,本文中串联式建模方法的建模误差最小,温度和压力测点的平均均方根误差分别为0.36和0.0055,本文所提出的方法为供热系统的混合式建模提供了依据。The thermodynamic and hydraulic modeling of district heating system is helpful for operation analysis and dispatch.In order to avoid disadvantages of pure mechanism model or pure data-driven model,three hybrid modeling methods are proposed.In aspect of modeling structure,hybrid modeling methods are classified into parallel modeling method,serial modeling method and guided modeling method.The results show that hybrid modeling method has better performance compared with the mechanism model,and serial modeling method has the least modeling error.The root mean square errors of temperature and pressure prediction result using serial modeling method are 0.36 and 0.0055 respectively.The method proposed in this paper provides reference for hybrid modeling of district heating systems.

关 键 词：蒸汽热网 混合建模 数据驱动 机理模型 

分 类 号：TK11[动力工程及工程热物理—热能工程]