Supply-demand imbalance response and coordinated regulation of heterogeneous energy flow systems considering electricity-hydrogen coupling

This is the authors' abstract. We don't add key points for this paper.

To enhance the stability and flexibility of heterogeneous energy flow systems (HEFS) under risk scenarios of supply-demand imbalance, the multi-energy flow interaction mechanism and an imbalance regulation strategy with the participation of electricity-hydrogen coupling are investigated. Firstly, an imbalance evaluation indicator is constructed to classify risk scenarios, and an imbalance regulation strategy is formulated based on electricity-hydrogen coupling units. With stability, flexibility, and demand-side resilience selected as risk indicators, a coordinated regulation model is established. The improved Analytic Hierarchy Process (AHP)-anti entropy weight method is adopted to determine the weight of each risk indicator. Then, the carbon flow footprint is characterized based on the risk indicators. Thus, the coordinated process of multi-energy response with the participation of electricity-hydrogen coupling is reflected. Finally, an actual energy system is simulated to explore the coordinated operation schemes under risk scenarios of incomplete energy supply-demand balance. Meanwhile, the effects of multi-energy coordination and source-load interaction in typical scenarios are analyzed in depth. The results show that the imbalance risk indicator is reduced by 2.78% and 7.75% when the energy supply-demand gap is 89.6% and 59.77%, respectively. Thus, the supply-demand imbalance of the system can be effectively mitigated by integrating electricity-hydrogen coupling into the multi-energy coordination process.