Optimal Scheduling of Integrated Energy System Combined with Demand Side Flexible Loads

Power-to-gas technology (P2G) is increasingly closely related to the field of energy interconnection. At the same time, the demand side flexible load participating in the system optimization as an effective way to ease the contradiction between energy supply and demand has attracted much attention. In this paper, the energy hub is used as a prototype with reference to its serial character, and a universal integrated energy system model is established for power and natural gas network as energy supply network. Taking into account the features of the demand side flexible load, the optimal scheduling analysis is carried out with the objectives of rationally dispatching flexible loads, reducing emissions and costs, improving new energy outputs and increasing P2G conversion benefits. Finally, an example is given to analyze the optimal scheduling results of an integrated system with the flexible load on the demand side, and four different scenarios are used to verify the optimal scheduling of the system. The results show that the cooperative scheduling of integrated energy systems considering the demand side flexible load is the most economical, and it also helps to eliminate the new energy and the electrical conversion of P2G, so as to ensure the environmental benefits and the safe and stable operation of the system.