Operational Optimization for a Regional Multi-energy System Considering Thermal Quasi-dynamic Characteristics  

作　　者：Xingying Chen Le Bu Cheng Chen Lei Gan Kun Yu 

机构地区：[1]College of Energy and Electrical Engineering,Hohai University,Nanjing 210098,China [2]Jiangsu Engineering Research Center for Distribution&Utilization and Energy Efficiency,Nanjing 210098,China

出　　处：《CSEE Journal of Power and Energy Systems》2024年第6期2551-2563,共13页中国电机工程学会电力与能源系统学报（英文）

基　　金：supported by National Natural Science Foundation of China(No.U22B20112 and No.U1766203)。

摘　　要：With the development of energy internet technology,the operational optimization of regional electricity-heating-gas systems is becoming a key research area.Considering that the thermal system’s quasi-dynamic characteristics will make the dispatching of regional multi-energy systems more accurate,the flexibility and energy efficiency of electricity-heating-gas system’s operations can be improved.The quasi-dynamic characteristics of regional thermal networks are analyzed here,as well as the demand side of the heating system.Based on thermal inertia characteristics,the virtual thermal energy storage models of both thermal networks and buildings,considering the thermal comfort index,are formulated synthetically for a central heating system.By comparing the operating results of different adjustment methods,a quality adjustment method is found to have the most flexibility for regional heating system control.With the hot water supply network and heating load modeling considering virtual storage,an operational optimization model for a regional electricity-heating-gas system is presented with the purpose of reducing the total operating costs.Numerical results show the effectiveness of the proposed method.Through a case study,it is found that when considering the virtual energy storage specialty for both the heating supply and demand side,the heating load can be shifted across the time periods under a time-of-use(TOU)price,leading to the obvious economic improvement of multienergy system operation.

关 键 词：Electricity-heating-gas system operational optimization thermal quasi-dynamic time-of-use electricity price virtual energy storage 

分 类 号：TK01[动力工程及工程热物理]