综合能源系统中包含多加热空间的能量网络方程

Energy Network Equations of Integrated Energy System Including Multiple Heating Spaces

基于一种利用热水和电能联合给3个空间加热的模型,建立与之相应的能量网络,利用广义基尔霍夫定律建立能量网络方程,求解该方程得到能量网络中所有支路的工作状态。每增加一个加热空间,能量网络方程增加4个变量(2个强度量和2个广延量);相应增加2个强度量方程和由热负荷提供的2个约束条件,方程组封闭可解,表明建立的能量网络方程可推广到具有任意数量热负荷的能量网络。利用一组典型的数据计算3个热负荷能量网络中各设备的工作状态,结果与利用电网络和流体网络计算的结果相同,表明建立的能量网络方程及其求解方法可靠。本研究可为综合能源系统的分析和优化提供理论指导。

Based on a modle of heating three spaces by hot water and electricity,the corresponding energy network was established,and the energy network equations were established according the generalized Kirchhoff’s laws.The working condition of all branches can be obtained by solving these equations.For each additional heating space,the energy network equation increases four variables(two intensive variables and two extensive variables).Two extensive equations and two constraints provided by the heat load are also added at the same time,the equations are closed and solvable,which indicates that the equations can be extended to the energy network with any number of heat load.A set of typical data is used to calculate the working status of each equipment in three heat load energy networks.The results are the same as those calculated by electric network and fluid network respectively.It shows that the established energy network equation and its solution method are reliable.This study can provide theoretical guidance for the analysis and optimization of integrated energy system.