Analysis of load characteristics and applicability of energy-storagecomposite energy systems for Shanghai Baoshan Station

Shanghai Baoshan Station adopts a special structural form of double-layer tracks, and the influencing factors of the station load are complex. A load calculation model is established using eQUEST, the temporal and spatial distribution characteristics of the load are analysed, and the technical and economic applicability of the energy station using an energy-storage composite energy system is discussed. The results show that the peak cooling and heating load indicators of the station are 212 W/m2and 160 W/m2, respectively. The load occurs mostly within the load rate range of 50% to 75% throughout the year. The connectivity of the waiting hall and other public areas is strong, and the outside air infiltration becomes the primary factor influencing the station load. The energy-storage composite energy system has the characteristics of flexible energy supply, energy saving and economic benefits. The cold storage rate and heat storage rate are 17% and 38%, respectively. Compared with the chiller plus air-source heat pump scheme and the chiller plus gas boiler scheme, the payback period is 1.8 years and 3.2 years, respectively, which is technically and economically applicable for Shanghai Baoshan Station.