考虑富氧燃烧技术的电–气–热综合能源系统低碳经济调度

富氧燃烧技术能实现燃煤机组二氧化碳的近零排放,是实现低碳调度的有效手段。该文提出将富氧燃烧技术引入电–气–热综合能源系统,并建立低碳经济调度模型,该模型可兼顾经济性和低碳性。首先,通过挖掘富氧燃烧电厂运行机理,研究其内部能量时移特性,并与燃烧后捕集电厂进行比较,分析其对降低碳排量的优势;其次,建立以运行成本、维护成本、折旧成本、碳交易成本等综合成本最低为目标函数的电–气–热综合能源系统低碳经济调度模型。并通过CPLEX求解。最后,对IEEE-30节点电网模型、7节点气网模型和6节点热网模型的综合能源系统进行仿真,验证模型的有效性。该文研究可为综合能源系统的低碳调度运行提供参考。

Low-carbon Economic Dispatch of Electro-gas-thermal Integrated Energy System Based on Oxy-combustion Technology

Oxygen-enriched combustion technology can achieve near-zero emission of carbon dioxide from coal-fired units, and is an effective means to achieve low-carbon scheduling. In this paper, oxygen enriched combustion technology is introduced into the comprehensive energy system of electricity gas heat, a low-carbon economic dispatching model was established, which can balance economic and low-carbon. Firstly, by excavating the operating mechanism of the oxyfuel combustion plant, the internal energy time shift characteristics were studied and compared with the post-combustion capture plant to analyze its advantages in reducing carbon emissions. Secondly, a low-carbon economic scheduling model of electricity gas heat integrated energy system was established with the lowest comprehensive cost such as operation cost, maintenance cost, depreciation cost and carbon trading cost. The solution was solved by CPLEX. Finally, the integrated energy system of IEEE-30 node grid model, 7-node gas network model and 6-node heat network model were simulated to verify the effectiveness of the model. This paper provides a reference for the low-carbon dispatch operation of integrated energy systems.