A novel two-layer nested optimization method for a zero-carbon island integrated energy system, incorporating tidal current power generation

Fengwu Han, Jianfeng Zeng, Junjie Lin, Chong Gao and Zeyang Ma

Renewable Energy, 2023, vol. 218, issue C

Abstract: Tidal current power generation (TCPG) has great potential to solve the unstable island energy supply problem because of strong predictability. However, TCPG construction and O&M are expensive and require appropriate capacity and scheduling strategies. Therefore, TCPG is added to a zero-carbon island integrated energy system (ZCIIES) coupled with electricity, thermal, hydrogen, and water as a flexible power in this study. Subsequently, a nested two-layer optimization approach is proposed. A multi-objective planning model in the upper layer, which aims at project economy and stability of power quality, is established to determine the optimal installed capacity; in the lower layer, a two-stage distributionally robust conditional value-at-risk (DRCVaR) model based on moment ambiguity is constructed to portray the uncertainty losses and improve the scheduling strategy. Finally, a case study is conducted, and the results demonstrate that: 1) TCPG was introduced into ZCIIES as a flexible power source, reducing energy storage capacity by 43.75% and total cost by 10.83% while ensuring stable operation. 2) The proposed method and two-stage DRCVaR model make ZCIIES operate effectively in balancing robustness and complexity, optimizing capacity allocation, ensuring economy, and quantifying the risk costs.

Keywords: Tidal current power generation (TCPG); Zero-carbon island integrated energy system (ZCIIES); Nested two-layer optimization; Two-stage distributionally robust conditional value-at-risk (DRCVaR) (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (5)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:218:y:2023:i:c:s096014812301296x

DOI: 10.1016/j.renene.2023.119381

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