铁道科学与工程学报2026，Vol.23Issue(8)：4006-4017,12.DOI:10.19713/j.cnki.43-1423/u.T20251620
基于太阳辐射与电热负荷评估的建筑光储系统优化研究
Optimization on building photovoltaic-storage systems based on the evaluation of solar radiation and electric-thermal loads
摘要
Abstract
As major energy consumption contexts,railway buildings generally face problems of high energy consumption intensity and large carbon emissions.During the optimization of their PV-storage systems,it is essential to balance multiple objectives such as economic and environmental performance.However,existing solutions struggle to define the reasonable boundaries for energy storage system configuration.By establishing an optimization model for a hybrid energy system integrating PV,battery storage,thermal storage and heat pumps,a quantitative evaluation index for the system designs AIPL(i.e.,ratio of solar radiation received by PV installed area to total equivalent building load)was proposed.By taking a typical railway office building in Changsha as a typical case,a mathematical model was established for the mixed-integer nonlinear programming problem,and the system's economic and environmental performance was analyzed under different electric-to-thermal ratio and AIPL values.By comparing the benchmark mode with the lithium battery mode,an objective function including economic costs and carbon emissions was built.Combined with constraints such as energy balance and equipment operation,the guiding mechanism of the AIPL index for energy storage system configuration was clarified.The results show that when AIPL<0.2,the PV power supply capacity is insufficient,and the investment cost of the energy storage system exceeds its environmental benefits.When AIPL>0.6 and the electric-to-thermal ratio≥1∶1,the lithium battery system shows significant advantages;at an electric-to-thermal ratio of 3∶1,carbon emissions are reduced by up to 51.5%.With the increase of the electric-to-thermal ratio,the heat pump capacity decreases by 23.7%～51.0%,while the lithium battery capacity increases.The optimized objective value of the system shows a nonlinear change of sharp decline followed by stabilization,reflecting the shift of direct PV supply capacity from"load compensation"to"excess energy absorption".The results indicate that the AIPL index integrates PV power supply capacity,total load,and load structure,and defines the boundaries of the economic and environmental performance of energy storage systems under different load conditions.This research can effectively guide the equipment selection and capacity configuration of building PV-energy storage systems,and provides reference value for promoting the low-carbon development of the railway industry and the achievement of"dual-carbon goals"in the construction field.关键词
建筑节能/光储系统/多目标优化/辐射资源/电热负荷Key words
building energy saving/photovoltaic-energy storage systems/multi-objective optimization/solar irradiation resources/electrical and thermal loads分类
建筑与水利引用本文复制引用
谭梦花,李靖..基于太阳辐射与电热负荷评估的建筑光储系统优化研究[J].铁道科学与工程学报,2026,23(8):4006-4017,12.基金项目
湖南省自然科学基金资助项目(2020JJ4722) （2020JJ4722）
