期刊
APPLIED ENERGY
卷 298, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.apenergy.2021.117239
关键词
Rooftop PV; PV planning; Geographic information system; Reinforcement learning; Economic profitability
资金
- National Research Foundation of Korea (NRF) - Korea government (MSIT
- Ministry of Science and ICT) [NRF-2018R1A5A1025137]
The study developed a GIS-based RL model for optimal planning of rooftop PV systems, showing its economic profitability in residential buildings in Nonhyeon district, South Korea. The model outperformed existing methods, demonstrating its potential for optimizing economic feasibility and promoting the adoption of rooftop PV systems.
This study aimed to develop a geographic information system (GIS)-based reinforcement learning (RL) model for optimal planning of a rooftop PV system, considering the uncertainty of future scenarios throughout the life cycle of buildings. To that end, GIS was used to establish the spatial data for the rooftop PV installation, and an RL model was developed to maximize the economic profit of the rooftop PV installation in various locations and future scenarios. The developed model was applied to residential buildings in Nonhyeon district, South Korea to evaluate their economic profitability and to compare the model with the existing planning methods. With the use of the developed GIS-based RL model, the rooftop PV system became economically feasible, achieving average economic profit of 539,197 USD over all scenarios for all target buildings which was higher than that of the existing models by 4.4% and 4.3%. Furthermore, the developed model outperformed the existing models especially in volatile scenarios with lower solar radiation. Therefore, the use of the proposed GIS-based RL model can optimize the economic feasibility of rooftop PV systems for buildings, which will benefit building owners and community-level energy business owners. In conclusion, the developed model can promote the adoption of rooftop PV systems, which have 91.8% lower global warming potential than the Korean mixed grid, without additional subsidies to achieve Korea's national CO2 emission reduction plan.
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