ECONOMIC SCHEDULING OF COMBINED SOLAR THERMAL POWER AND WIND POWER SYSTEMS CONSIDERING WIND POWER UNCERTAINTY IN SPOT MARKETS

Li Zilang; Hou Hongjuan; Wang Jiayi; Teng Yuhang

doi:10.19912/j.0254-0096.tynxb.2024-2096

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Acta Energiae Solaris Sinica ›› 2025, Vol. 46 ›› Issue (7) : 29-36. DOI: 10.19912/j.0254-0096.tynxb.2024-2096

Special Topics of Academic Papers at the 30th Annual Meeting of the China Association for Science and Technology

ECONOMIC SCHEDULING OF COMBINED SOLAR THERMAL POWER AND WIND POWER SYSTEMS CONSIDERING WIND POWER UNCERTAINTY IN SPOT MARKETS

Li Zilang¹, Hou Hongjuan¹, Wang Jiayi², Teng Yuhang¹

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Abstract

In order to study the economic scheduling strategy for the renewable energy systems combined with the solar thermal power in the spot market， a mathematical model of the key components and subsystems is established. A combined power generation system composed of a 50 MW solar power tower plant and a 300 MW wind farm taken as the research object. Based on the theory of distributional robust optimization， the uncertainty set is constructed by integrating the 1-norms and ∞-norms. A two-stage optimal dispatch model for the combined system， considering wind power uncertainty， is established with the aim of maximizing system revenue. The optimal output allocation of the combined system to participate in the electricity spot market is obtained， and compared with the revenue of the independent system participating in the spot market. The results show that in the scenario， where the combined generation system participates in both the energy market and the auxiliary service market， the wind power deviation penalty of the combined system is reduced by 92.70% and the revenue is increased by 3.19% compared to the independent system. Finally， the impacts of the historical wind power data volume， confidence level， maximum frequency regulation capacity and rotating standby capacity on the overall system revenue are analyzed.

Key words

solar thermal power plant / wind power / spot market / distributional robust optimization / optimization

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Li Zilang, Hou Hongjuan, Wang Jiayi, Teng Yuhang. ECONOMIC SCHEDULING OF COMBINED SOLAR THERMAL POWER AND WIND POWER SYSTEMS CONSIDERING WIND POWER UNCERTAINTY IN SPOT MARKETS[J]. Acta Energiae Solaris Sinica. 2025, 46(7): 29-36 https://doi.org/10.19912/j.0254-0096.tynxb.2024-2096

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