Planning of Energy Hubs with Demand Side Management in Integrated Electricity-Gas Energy Systems

In recent years, the coupling between the power system and the natural gas system has been strengthened with the development of the power to gas (PtG) technology, and the flexibility of power system operation is improved with the application of the demand side management (DSM). The emerging energy hub (EH) plays an important role in an integrated electricity-gas energy system with PtG equipment and natural gas-fired plants (NGFP) units included. Given this background, an optimal planning model of EHs is presented with the DSM of both industrial load and resident load considered in an integrated electricity-gas energy system. The continuity of each task and the definite sequence between tasks are considered in the DSM. The objective of this model is to maximize the potential profits of the planning scheme in the given future years, including the electricity and natural gas sales revenue and the environmental benefit, with the investment cost, operation cost and DSM compensation cost taken into account and solved by AMPL/CPLEX. Finally, an integrated electricity-gas energy system containing a 39-bus power system and a 20-bus natural gas system is employed to illustrate the feasibility and effectiveness of the proposed optimal planning model.