Multi-Objective Scheduling Method for Integrated Energy System Containing CCS+P2G System Using Q-Learning Adaptive Mutation Black-Winged Kite Algorithm

Ruijuan Shi, Xin Yan, Zuhao Fan and Naiwei Tu ()
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Ruijuan Shi: Faculty of Electrical and Control Engineering, Liaoning Technical University, Huludao 125105, China
Xin Yan: Faculty of Electrical and Control Engineering, Liaoning Technical University, Huludao 125105, China
Zuhao Fan: Faculty of Electrical and Control Engineering, Liaoning Technical University, Huludao 125105, China
Naiwei Tu: Faculty of Electrical and Control Engineering, Liaoning Technical University, Huludao 125105, China

Sustainability, 2025, vol. 17, issue 13, 1-35

Abstract: This study proposes an improved multi-objective black-winged kite algorithm (MOBKA-QL) integrating Q-learning with adaptive mutation strategies for optimizing multi-objective scheduling in integrated energy systems (IES). The algorithm dynamically selects mutation strategies through Q-learning to enhance solution diversity and accelerate convergence. First, an optimal scheduling model is established, incorporating a carbon capture system (CCS), power-to-gas (P2G), solar thermal, wind power, and energy storage to minimize economic costs and carbon emissions while maximizing energy efficiency. Second, the heat-to-power ratio of the cogeneration system is dynamically adjusted according to load demand, enabling flexible control of combined heat and power (CHP) output. The integration of CCS+P2G further reduces carbon emissions and wind curtailment, with the produced methane utilized in boilers and cogeneration systems. Hydrogen fuel cells (HFCs) are employed to mitigate cascading energy losses. Using forecasted load and renewable energy data from a specific region, dispatch experiments demonstrate that the proposed system reduces economic costs and CO 2 emissions by 14.63% and 13.9%, respectively, while improving energy efficiency by 28.84%. Additionally, the adjustable heat-to-power ratio of CHP yields synergistic economic, energy, and environmental benefits.

Keywords: integrated energy system; CCS+P2G; the adjustable heat-to-power ratio; Q-learning; variational strategy (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2025
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