耦合多种能源与设备的综合能源系统供能灵活,能源利用率高,有利于国家能源结构低碳清洁转型,有助于双碳目标的实现。首先对综合能源系统所使用能源和设备生命周期碳排放进行了计算,而后建立含碳交易成本在内的双层优化模型对综合能源系统的容量配置与调度运行进行了优化。设立3种场景对综合能源系统与传统供能系统的经济性与碳排放进行分析。结果表明,在综合能源系统生命周期中,能源消耗产生的碳排放为主体,其中20%以上来自上游各类电厂的间接排放,系统设备带来的碳排放仅有1%左右。而结合当前的电价、燃气价格及碳交易价格来说,优化过程考虑生命周期碳排放并不占优势。

The integrated energy system coupling multiple energy sources and equipment has a flexible energy supply and high energy utilization rate, which is conducive to the transformation of the national energy structure to a low-carbon and clean direction and helps to achieve the goal of double-carbon. Firstly, the carbon emissions of energy and equipment used in the integrated energy system are calculated, and then a bi-level optimization model including carbon transaction cost is established to optimize the capacity allocation and dispatching operation of the integrated energy system. Three scenarios were set up to analyze the economy and carbon emissions of integrated energy system and traditional energy supply system. The results show that in the life cycle of integrated energy system, carbon emissions generated by energy consumption are the main part, of which more than 20% come from indirect emissions of various upstream power plants, and the carbon emissions brought by system equipment are only about 1%. Combining the current electricity price, gas price and carbon trading price, it is not dominant to consider life cycle carbon emissions in the optimization process.

国家自然科学基金项目（面上项目，重点项目，重大项目）