COORDINATED OPTIMIZATION OF STRUCTURE AND CAPACITY OF WIND-SOLAR COMPLEMENTARY INTEGRATED ENERGY SYSTEM

Zhang Lizhi; Li Fan; Sun Bo

doi:10.19912/j.0254-0096.tynxb.2024-0765

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Acta Energiae Solaris Sinica ›› 2025, Vol. 46 ›› Issue (9) : 669-677. DOI: 10.19912/j.0254-0096.tynxb.2024-0765

COORDINATED OPTIMIZATION OF STRUCTURE AND CAPACITY OF WIND-SOLAR COMPLEMENTARY INTEGRATED ENERGY SYSTEM

Zhang Lizhi, Li Fan, Sun Bo

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Abstract

To address the optimal design of a wind-solar complementary integrated energy system （IES）, a coordinated optimization method of system structure and equipment capacity is proposed. A layered model for IES is firstly established using the principle of energy cascade utilization. The coordinated optimization problem of system structure and capacity that minimizes annual total cost is then formulated as a bi-level iterative optimization problem. The upper level optimizes the investment in renewable energy resources, energy conversion and storage equipment, and their interconnection scheme. The lower level optimizes the capacity and operation scheme of the selected equipment. A genetic algorithm and commercial solver CPLEX are applied to solve the problem. Finally, simulation results show that the proposed method reduces the annual total cost by 8.7% compared with the capacity configuration method based on the predefined system structure, which verifies the effectiveness of the proposed method.

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renewable energy / integrated energy system / energy conversion / capacity configuration / optimization

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Zhang Lizhi, Li Fan, Sun Bo. COORDINATED OPTIMIZATION OF STRUCTURE AND CAPACITY OF WIND-SOLAR COMPLEMENTARY INTEGRATED ENERGY SYSTEM[J]. Acta Energiae Solaris Sinica. 2025, 46(9): 669-677 https://doi.org/10.19912/j.0254-0096.tynxb.2024-0765

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