Electrical characteristics and economic study of PV-BESS teaching building based on spatial and temporal distribution of personnel

Yecong He, Yuqian Zhang, Zhigang Zhao, Xiao qin Sun, Xiaofeng Zhang, Sihui Li, Qi Deng and Jie Sun

Renewable Energy, 2025, vol. 241, issue C

Abstract: High energy consumption in university buildings has a huge potential for energy saving. Combining photovoltaics and buildings (PV-BESS) is one of the essential ways to achieve carbon neutrality in buildings. However, the current research on PV-BESS focuses on the economics of office, residential, and commercial buildings, optimization of battery capacity, etc. The research on the impact of the spatial and temporal distribution of personnel on PV-BESS in university buildings needs to be strengthened in order to minimize operating costs and improve energy utilization. Therefore, based on the spatial and temporal distribution of personnel, this paper studies the power characteristics and economy of DAC and CAC’ integrated photovoltaic storage’ systems in colleges and universities and simulation studies of 36 different scenarios of the two kinds of integrated photovoltaic storage systems are carried out by using DesignBuilder and TRNSYS. The results show that compared with the DAC system, the power consumption of the CAC system is reduced by 3.2–13.96 % in June, while the power consumption of the DAC system is reduced by 23 % and 20.58–41.01 % in (July, August) and (December-14 January), respectively; the SF of the CAC system is 17 % higher than that of the DAC system, which indicates that the system is more self-sufficient and the system is more capable of matching the load. When recovering the cost of the PV + BESS + AC system, the NPV of the DAC system is 2 % less, the PBP is 18.86 % shorter (2.1 years) than that of the CAC system, and the ROI of the two systems is only 1 % different. Therefore, we recommend the DAC system for PV-battery storage integrated university buildings to match personnel's spatial and temporal distribution characteristics. The school adopts PV-BESS with little risk and stable returns, demonstrating and promoting significance and providing a theoretical basis and data support for the design and application of zero-carbon university microgrids.

Keywords: Universities; Solar photovoltaic (PV); Battery energy storage system(BESS); Economic analysis; Electric characteristics (search for similar items in EconPapers)
Date: 2025
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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:241:y:2025:i:c:s0960148125000059

DOI: 10.1016/j.renene.2025.122343

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