Energy Reports (Nov 2022)
Day-ahead scheduling of SMR integrated energy system considering heat-electric-cold demand coupling response characteristics
Abstract
Nuclear heating has the advantages of clean and efficient, especially the all-in-one small modular reactor (SMR) of heating-power generation has the characteristic of decreasing power generation when increasing heating power, that is, the characteristic of thermoelectric reverse coupling, which is helpful to improve the economy of the system and promote the consumption of renewable energy. The multi-energy demand coupling response is an important measure to realize the efficient operation of the integrated energy system (IES). Based on the integrated demand response (IDR), a day-ahead scheduling model of the SMR-IES considering the demand coupling response characteristics is proposed. First of all, based on the advantages of SMR heating and power generation integration, the SMR-IES operating architecture with coupling in both sides of energy supply and demand is proposed. Then, on the basis of energy hub model and power load price elastic response model, the IDR model considering the coupling response characteristics of heat-electric-cold demand is established, which takes into account the mutual influence and restriction of both sides of energy supply and demand, while organically connecting the supply side and demand side. Finally, with the goal of reducing the operating cost of the system, a day-ahead scheduling model is established, which realizes the coordination and optimization of the supply and demand side by adjusting the price of energy. Simulation on the MATLAB platform, and the optimization results of different energy supply scenarios are compared. It is found that based on the SMR-IES scheduling model considering demand coupling response the daily optimal operation cost is reduced by 38.4%, and the renewable energy efficiency is increased by 63.1%. Considering the demand coupling response, the coupling substitution of electricity-heat load can be realized, the electricity-heat load can be adjusted while ensuring that user needs remain unchanged, and the comprehensive energy efficiency of the system can be further improved.
