Aggregate power flexibility of multi-energy systems supported by dynamic networks

被引:0
作者
Li, Hengyi [1 ]
Qin, Boyu [1 ]
Wang, Shihan [1 ]
Ding, Tao [1 ]
Liu, Jialing [1 ]
Wang, Hongzhen [1 ]
机构
[1] Xi An Jiao Tong Univ, Sch Elect Engn, State Key Lab Elect Insulat & Power Equipment, Xian, Peoples R China
基金
中国国家自然科学基金;
关键词
Multi-energy system; Flexibility evaluation; Robust optimization; Dynamic network; Uncertainty; INTEGRATED POWER; DISPATCH; STRATEGY; MODEL; HEAT; FLOW;
D O I
10.1016/j.apenergy.2024.124565
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
The multi-energy system, encompassing electricity networks, district heating networks (DHNs), and hydrogen- enriched compressed natural gas (HCNG) networks, provides an alternative for promoting intermittent renewable energy accommodation and enhancing operational flexibility. This paper investigates the aggregate flexibility of the multi-energy system based on dynamic network models and admissible power fluctuation regions of decomposed subsystems. The dynamic processes within HCNG networks/DHNs are analyzed, and the inner-box method is employed to approximately quantify the individual flexibility of the dynamic networks. Furthermore, the optimal dispatchable regions of decomposed subsystems, accounting for internal gas/heating load uncertainties, are evaluated based on distributionally robust optimization. Through distribution-level power aggregation, the flexibility of the multi-energy system is quantified utilizing geometric methods. Numerical results on two test systems verify the effectiveness of the proposed methodology.
引用
收藏
页数:11
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