在电-气-热综合能源系统（Intergrated Power、Gas and Heat Energy Systems，IPGHES）中，利用电力、热力和天然气的互补特性可以提高综合能源中可再生能源的消纳能力。电力系统、热力系统和天然气系统通过热电联产、电转气等设备互相耦合，文中采用可分离热电燃气轮机模型并计及了电转气技术，建立了考虑天然气管网损耗的电-气-热综合能源系统优化调度模型。算例以IEEE 30节点电力网络和比利时20节点天然气网络耦合成的系统为例进行分析，结果表明在所选模型下，系统可灵活协调热电联产机组热电出力，并通过电转气和储气实现对能量进行时间上的平移，优化各子系统调度出力，提高可再生能源的消纳能力，降低综合系统运行成本。
英文摘要:
In the integrated power, gas and heat energy systems (IPGHES), the complementary nature of electricity, heat and natural gas can improve the consumption capacity of renewable energy in integrated energy system. The power system, the thermal system and the natural gas system are coupled to each other through cogeneration, electric gas conversion and other equipment. In this paper, the separable thermo-electric gas turbine model is adopted and the electric gas conversion technology is taken into account, and the electric-gas-heat integrated energy system optimization scheduling model considering the loss of the natural gas pipeline network is established. The example is analyzed based on the example of the IEEE 30-node power network and the Belgian 20-node natural gas network coupled system. The results show that under the selected model, the system can flexibly coordinate the thermo-electric output of the cogeneration unit, and realize the energy shifts in time by electricity conversion and gas storage, optimizes the dispatching output of each subsystem, improves the consumption capacity of renewable energy, and reduces the operating cost of the integrated systems.