中国电机工程学报2024，Vol.44Issue(19)：7603-7615,中插10,14.DOI:10.13334/j.0258-8013.pcsee.240162
综合能源系统分析——从数值到解析(二):热网解析法
Integrated Energy System Analysis——From Numerical to Analytical(Ⅱ):Analytical Method in District Heating System
摘要
Abstract
District heating system(DHS)is an important part in integrated energy systems(IES).As the second paper in this series,this paper focuses on the quality regulated DHS and constructs its mathematical model in the form of partial differential-algebraic equations under certain assumptions,subsequently deriving an analytical solution for the model.First,the pipeline model described by a first-order linear hyperbolic partial differential equation is transformed into an intersection of initial value and boundary value problems.A bilateral method of characteristics is then proposed to derive the analytical expression of the pipeline model,which undergoes theoretical validation.Furthermore,by dividing the transfer paths,the analytical solution is extended from a single pipeline to the network level,thereby establishing a source-load two-port model for the quality-regulated DHS.Case studies show that the proposed analytical method outperforms the traditional numerical methods in terms of efficiency.Specially,the analytical method can significantly improve the accuracy and efficiency over the finite difference method.关键词
综合能源系统/数值法/解析法/热动态/双边特征线法Key words
integrated energy system/numerical method/analytical method/thermal dynamics/bilateral method of characteristics分类
信息技术与安全科学引用本文复制引用
张苏涵,陆帅,顾伟,庄文楠,俞睿智..综合能源系统分析——从数值到解析(二):热网解析法[J].中国电机工程学报,2024,44(19):7603-7615,中插10,14.基金项目
国家杰出青年基金项目(52325703). The National Science Fund for Distinguished Young Scholars(52325703). （52325703）
