综合能源系统能够协同规划多种能源,提升可再生能源的消纳能力,从而实现系统的低碳高效运行。基于此,本研究提出了一种集成光伏发电系统、蓄热水箱和内燃机的综合能源系统。考虑冷、热、电三种形式能量平衡约束,采用遗传算法以系统的年总成本最小为优化目标,并以年总碳排放量和年总一次能源消耗量为评价指标建立了综合能源系统规划优化模型。结果表明:与分产系统相比,所提出的综合能源系统的年总成本节约率、年二氧化碳减排率和年一次能源节约率分别为30.67%、33.26%和8.93%。此外,综合能源系统中光伏发电系统承担了全年用户电负荷的14.58%,有效提升了系统的经济性以及能效性。

The integrated energy system can coordinate the planning of multiple energy sources, improve the absorptive capacity of renewable energy, so as to realize the low-carbon and efficient operation of the system. Based on this, we proposed a comprehensive energy system integrating photovoltaic power generation system, heat storage water tank and internal combustion engine. Considering the constraints of energy balance in three forms of cold, heat and electricity, the we used genetic algorithm to establish the optimization model of comprehensive energy system planning with the minimum annual total cost as the optimization goal, and the annual total carbon emissions and annual total primary energy consumption as the evaluation indicators. The results show that, the annual total cost saving rate, annual carbon dioxide emission reduction rate and annual primary energy saving rate of the proposed integrated energy system are 30. 67%, 33. 26% and 8. 93%, respectively, compared with the separated production system. In addition, the photovoltaic power generation system in the integrated energy system bears 14. 58% of the annual user electric load, effectively improving the economy and energy efficiency of the system.