电-气-氢-热-风-光耦合综合能源系统分层级Energy Hub建模方法

Hierarchical energy hub modeling method for electricity/gas/hydrogen/heat/wind/solar energy coupled integrated energy systems

随着多能融合的不断深入,综合能源系统可实现大规模可再生能源消纳。由于综合能源系统广泛涉及电、气、氢、热、风、光等多种能源形式,经典Energy Hub方法与图论Energy Hub方法在建模效率与复杂度等方面均存在局限性。文章提出了分层级Energy Hub建模方法,将综合能源系统从能量输入到输出的耦合过程建模为分配层、转换层、集成层、储能层、网络层5个环节,全面涵盖了综合能源系统复杂多元的多能耦合关系,为输入与输出搭建桥梁,确保能量供需平衡。最后,通过算例分析论证了所提方法的优势与可行性,以及与传统方法在可再生能源消纳量上的提升。

With the deepening of multi-energy integration,integrated energy system(IES)has become an important way to solve the problem of worldwide energy shortage and renewable energy integration in the future.Multi-energy coupling is the essential attribute of IES,which is the key to tap and give full play to the multi-energy complementary potential of IES.Due to multiple energy forms involved such as electricity,gas,hydrogen,heat,wind and solar energy,multi-energy coupling modeling of IES faces challenges.The existing classical Energy Hub method and graph theory Energy Hub method have limitations in modeling efficiency and complexity.To solve this problem,this paper proposes a Hierarchical Energy Hub modeling method,which models the coupling process of IES from energy input to output into five clear layers:distribution layer,conversion layer,integration layer,energy storage layer and network layer,comprehensively covers the complex and multivariate multi-energy coupling relationship of IES,builds a bridge between input and output,and can ensure the balance of energy supply and demand.Finally,case study has been given to demonstrate the advantages and feasibility of the proposed method,and the improvement of the traditional method and the method proposed in this paper in the consumption of renewable energy was demonstrated.