CAPACITY CONFIGURATION AND MULTI-OBJECTIVE DECISION-MAKING FOR WIND-PV-CHP SYSTEM WITH MOLTEN SALT HEAT STORAGE

Wang Jiale; Zhou Yuangui; Guo Haoyu; Wang Luchun; Wan Luoqiang; Jia Fei

doi:10.19912/j.0254-0096.tynxb.2025-0791

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Acta Energiae Solaris Sinica ›› 2026, Vol. 47 ›› Issue (9) : 599-607. DOI: 10.19912/j.0254-0096.tynxb.2025-0791

CAPACITY CONFIGURATION AND MULTI-OBJECTIVE DECISION-MAKING FOR WIND-PV-CHP SYSTEM WITH MOLTEN SALT HEAT STORAGE

Wang Jiale¹, Zhou Yuangui^1,2, Guo Haoyu¹, Wang Luchun³, Wan Luoqiang³, Jia Fei¹

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Abstract

In order to alleviate the technical challenges of renewable energy accommodation and synergistic supply of multi-energy loads in the context of global climate governance, this paper proposes a wind-photovoltaic-molten salt thermal energy storage-electric heater hybrid renewable cogeneration system, which uses electric heater-thermal energy storage-power block to regulate wind and photovoltaic output and supply power load, as well as uses thermal energy storage-heat exchanger to supply heat load. This paper comprehensively considers the economy, reliability, energy efficiency and environmental performance to establish a many-objective capacity optimization model. The model aims to minimize levelized cost of energy, loss of power and heat supply probability, curtailment rate of wind and PV power and whole lifecycle equivalent carbon emissions as objectives, uses the non-dominated sorting genetic algorithm（NSGA-Ⅲ） to solve the four-objective problem, then uses principal component analysis to reduce dimension, finally uses TOPSIS decision-making method to obtain the optimal-compromise solution. The results of case study show that the objective function of the cogeneration system proposed in this paper is reduced by 4.7%, 31.8%, 7.5% and 26.4%, respectively, compared to the stand-alone power system.

Key words

wind-solar cogeneration system / molten salt thermal storage / high-dimensional multi-objective optimization / principal component analysis / TOPSIS

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Wang Jiale, Zhou Yuangui, Guo Haoyu, Wang Luchun, Wan Luoqiang, Jia Fei. CAPACITY CONFIGURATION AND MULTI-OBJECTIVE DECISION-MAKING FOR WIND-PV-CHP SYSTEM WITH MOLTEN SALT HEAT STORAGE[J]. Acta Energiae Solaris Sinica. 2026, 47(9): 599-607 https://doi.org/10.19912/j.0254-0096.tynxb.2025-0791

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