区域冷-热-电联供系统优化设计方法及其运行特性分析

Optimization design method and operation characteristic for regional combined cooling heating and power system

提出以经济成本为导向的冷-热-电联供系统自适应运行策略,确定以年总成本为目标,内燃机额定容量与电制冷占比为优化变量的区域冷-热-电联供系统优化方法。基于某区域案例,采用区域冷-热-电联供系统为其供能,并基于以电定热、以热定电与自适应运行策略,设计9种运行模式,对不同运行模式与不同供能面积下的区域冷-热-电联供系统进行分析。结果表明:针对所研究的10万m^(2)和20万m^(2)的建筑区域,利用区域冷-热-电联供系统按照自适应策略为其供能更加经济;针对所研究的1万m^(2)的建筑区域,按照不同的功能区划分后,采用多个冷-热-电联供系统在以电定热策略下单独为其供能更具有经济性。

An economic cost-oriented adaptive operation strategy for the combined cooling heating and power(CCHP)system is proposed,and an optimization method for the regional CCHP system is determined with the annual total cost as the target and the rated capacity of internal combustion engine and the proportion of electric refrigeration as the optimization variables.Based on one region case,the regional CCHP system is used to supply energy,and nine operation modes are proposed based on the operation strategies of following electric load,following thermal load and self-adaptive.The regional CCHP system under different operation modes and energy supply areas is analyzed.The results show that it is more economical to use the regional CCHP system with the adaptive strategy for the building area of 100000 m^(2) and 200000 m^(2).For the building area of 10000 m^(2),after the division of function regions,it is more economical to use multiple CCHP systems under the strategy of following electric load.