Optimal Configuration Method of Electric Heating and Supplementary Heating in Urban Heat Exchange Station Considering Constraints of Distribution Network Capacity and Building Thermal Inertia

Municipal heating in northern China generally suffers from heat sources, heat grid gaps and high dependence on fossil fuels, and it is difficult to ensure the terminal heating effect of incremental buildings, and relying on increasing capacity of traditional distribution network will result in waste of social resources to some extent. For this reason, an urban heat exchange station-oriented electric heating and supplementary heating system was designed and an optimal configuration method of electric heating and supplementary heating for urban heat exchange stations under the promise of not increasing the capacity of distribution network was proposed. Firstly, the he design structure of the electric heating and supplementary heating system was expounded, and the models of heating equipment and heat storage equipment and the models of building thermal inertia were constructed. Secondly, by means of two-stage optimization method and considering equipment investment and operating costs, taking the economy as objective an optimal configuration model of electric heating and supplementary heating was established. Finally, taking a certain residential area in Shijingshan, Beijing as the research object the simulation on the platform of MATLAB was conducted. Simulation results show that utilizing the proposed optimal configuration method for electric heating and supplementary heating the peak-to-valley difference of distribution network can be effectively reduced and the heating effect of the terminal can be also ensured, thus the proposed method possesses good economic efficiency and can provide a reference for electric heating planning.