基于㶲经济学的综合能源系统动态冷热电成本

多能流耦合的综合能源系统(IES)成本分摊是综合能源服务研究的一个关键技术问题。现有IES产品成本计算未虑能量品位的影响，并且对含储能的IES成本变化缺乏深入研究。以热力学第二定律为基础，建立IES动态㶲经济学模型，并以某园区综合能源系统为例，研究动态负荷以及储能工况对系统冷热电成本的影响。结果表明：储热装置能够有效降低单位冷热电成本；相较无储热工况，在储热工况下系统单位冷、热、电成本分别降低6%、24%、1.2%；此外，储热工况下的IES冷热电平均成本与电负荷成正相关，与冷热负荷呈负相关。动态㶲经济学模型能够高效地分析含储热的IES在优化周期内的逐时冷热电成本，为冷热电实时定价提供依据，合理利用储能装置能够降低冷热电产品的成本，有助于内燃机消纳，提高系统运行的稳定性和经济性。

Dynamic Cost of Cooling,Heating and Power in Integrated Energy System Based on Exergy Economics

Cost allocation of integrated energy systems (IES) with multi-energy flow coupling is a key technical issue in the study of integrated energy services. Existing cost calculations of IES products do not take into account the effect of energy grade, and no in-depth study has been carried out on the cost variations of IES with energy storage. A dynamic exergy economics model of IES is established based on the second law of thermodynamics to study the influence of dynamic load and energy storage on the cost of cooling, heating and power of a park IES. The results show that the thermal storage device can effectively reduce the unit cost of cooling, heating and power; compared with the IES without thermal storage, the IES with thermal storage can reduce the unit cost of cooling, heating and power by 6% , 24% and 1.2%, respectively; and the average cost of cooling, heating and power of IES under thermal storage condition is positively correlated with the electric load, and negatively correlated with the heating and cooling load. The dynamic exergy economics model can efficiently analyze the hourly cooling, heating and power cost of IES with heat storage in the optimization period, and provide a basis for the real-time pricing of cooling, heating and power. The rational use of energy storage device can reduce the cost of cooling, heating and power products, contribute to internal combustion engine absorption, and improve the stability and economy of the system operation.