PDF(3480 KB)
Low-carbon Optimal Operation of Heterogeneous Energy Flow System Considering Hydrogen Energy Flow and Generalized Energy Storage
MA Chenglian, LI Hao, WEI Gang, LAN Bing, ZHAO Yu, SUN Li
Electric Power Construction ›› 2025, Vol. 46 ›› Issue (11) : 83-98.
PDF(3480 KB)
PDF(3480 KB)
Low-carbon Optimal Operation of Heterogeneous Energy Flow System Considering Hydrogen Energy Flow and Generalized Energy Storage
[Objective] The large-scale integration of high-proportion renewable energy often results in imbalances between supply and demand in heterogeneous energy flow systems （HEFS）. To address the challenges associated with renewable energy consumption， this study investigates a low-carbon coordinated control strategy for HEFS incorporating hydrogen energy flow and generalized energy storage.[Methods] First， considering the multi-energy flow interactions involving hydrogen energy and the flexible regulation capabilities of generalized energy storage， a set of evaluation indicators， including comprehensive cost， renewable energy （wind and solar） consumption rate， and carbon emissions， was established to assess the overall benefits of optimal system operation. Second， a carbon flow topology model was developed based on energy flow interactions and system carbon emission data. This model was used to incorporate carbon flow information into the evaluation process， supporting the analysis of multi-objective optimization results. Finally， a practical regional energy system in Northeast China was simulated to examine the collaborative interaction dynamics among energy sources and load storages， as well as to evaluate the optimization effects of hydrogen energy flow and generalized energy storage on the system's overall performance.[Results] Simulation results demonstrate that the integration of hydrogen energy flow and generalized energy storage significantly improves the renewable energy consumption capacity of the heterogeneous energy flow system. These findings validate the effectiveness and practical feasibility of the proposed method.[Conclusions] By enabling the flexible interaction between electricity， heat， and hydrogen energy flows， the proposed approach facilitates the comprehensive utilization of energy resources， enhances the system's dynamic regulation capability， and effectively promotes the penetration of low-carbon energy. The incorporation of generalized energy storage further supports low-carbon energy consumption by enabling peak shaving and valley filling， thereby advancing the transition of heterogeneous energy flow systems toward efficiency， cleanliness， and low-carbon operation. Carbon flow analysis during representative periods reveals that the combined application of hydrogen energy flow and generalized energy storage effectively mitigates supply-demand imbalances， contributing to the realization of low-carbon system operations. The coordinated control strategy proposed in this study provides novel insights and practical methodologies for improving renewable energy integration in heterogeneous energy flow systems and holds strong potential for real-world engineering applications.
hydrogen energy flow / generalized energy storage / heterogeneous energy flow system（HEFS） / carbon flow / low-carbon operation
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Aiming at the distribution network with microgrid, a distribution network planning method considering the flexibility resource attribute of microgrids is proposed. The flexibility resource attribute of microgrids is considered from substation planning and grid planning. Firstly, the mathematical models of flexible resources in microgrids are established and then the external equivalent model of microgrids is formed. Then, the flexibility resources are considered by updating the constant volume formula and adding constraints in network planning. Finally, a distribution network programming model with minimum investment and operating cost as the objective function is established and it is solved by improved genetic algorithm. Case study is designed according to the area to be planned with three microgrids. The results show that the planning method proposed in the paper can improve the system transmission flexibility with a small increase in cost, so when the distributed power supply fluctuates or the load forecast is inaccurate during the operation of the distribution network in the future, the line will have enough flexibility for the main network or the microgrid to transmit power, which proves the rationality and effectiveness of the proposed model. |
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