Optimized operation method of small and medium-sized integrated energy system for P2G equipment under strong uncertainty

• Published in: Energy (Oxford) Vol. 199; p. 117269
• Main Authors: Zhou, Suyang, Sun, Kaiyu, Wu, Zhi, Gu, Wei, Wu, Gaoxiang, Li, Zhe, Li, Junjie
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier Ltd 15.05.2020; Elsevier BV
• Subjects: Algorithms; Compressed gas; Computer simulation; Energy resources; Energy sources; HCNG; Integrated energy system; Integrated energy systems; Mathematical models; Natural gas; Optimal dispatch; Optimization; Power-to-gas; Renewable energy; Renewable resources; Risk reduction; Robustness (mathematics); Two-stage robust optimization; Uncertainty; Integrated energy system; Uncertainty; Two-stage robust optimization; Optimal dispatch; HCNG
• ISSN: 0360-5442; 1873-6785
• DOI: 10.1016/j.energy.2020.117269

This paper studies an Integrated Energy System (IES) and the application of Hydrogen Compressed Natural Gas (HCNG) and Power to Gas (P2G) equipment in IES. Based on the C&CG algorithm, this paper establishes a two-stage robust optimization(TRO) model of the system operating in uncertain environments. Introducing HCNG and P2G equipment into IES can improve the system’s ability to accommodate renewable energy, reduce system operation cost and reduce interaction fluctuation between the system and the main grid. Robust optimization can effectively reduce the risk of system operation in uncertain environments and improve the stability of system operation. Under the compensation of the real-time market, the financial performance of the robust optimization model is better than the deterministic optimization model according to the numerical simulation. This study is helpful to the study of the operation and scheduling of IES in remote areas with weak power system infrastructure and abundant renewable energy resources. •Established a linear mathematical model of a CHP unit using HCNG.•Established an optimized scheduling model for IES with P2G in uncertain environment.•Developed a two-stage robust optimization method for IES with P2G in C&CG algorithm.•The access of the P2G device reduces operating cost and STD of interactive power.•Proposed algorithm reduced the system operation risk in uncertain environment.