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Quantitative analysis of multi-energy coupling: Indicator set and influence on IES region

Author

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  • Xiao, Jun
  • Wang, Cong
  • Song, Chenhui
  • Li, Zongzhe

Abstract

Measuring the coupling degree of heterogeneous energy is a fundamental task of integrated energy system (IES). To describe the energy coupling, this paper proposes new indicators and observes IES energy coupling phenomena with the proposed indicators. Firstly, a set of energy coupling indicators is proposed. The proposed indicators not only measure the coupling degree of IES and its subsystems, but also distinguish among power coupling, energy coupling, and capacity coupling. Secondly, the proposed indicators are compared with existing indicators. It is demonstrated that the proposed indicators are more accurate and comprehensive in measuring the coupling degree of IES. Thirdly, by observing the variation law of the operational region of IES in different coupling degrees, four phenomena have been discovered. The influence mechanism of coupling degree on the operational region of IES is revealed. The proposed indicators are verified by typical electricity-gas-heat‑hydrogen cases and a real case, demonstrating good universality and applicability.

Suggested Citation

  • Xiao, Jun & Wang, Cong & Song, Chenhui & Li, Zongzhe, 2025. "Quantitative analysis of multi-energy coupling: Indicator set and influence on IES region," Applied Energy, Elsevier, vol. 401(PA).
    • Handle: RePEc:eee:appene:v:401:y:2025:i:pa:s0306261925013492
    DOI: 10.1016/j.apenergy.2025.126619
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