LINE SEQUENCE REPAIRING METHOD OF INTEGRATED ENERGY SYSTEM FOR RESILIENCE ENHANCEMENT

Yu Songyuan; Ao Yun; Wu Ruxin; Wei Le; Xu Yuhan; Zhang Junsong

doi:10.19912/j.0254-0096.tynxb.2024-1722

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Acta Energiae Solaris Sinica ›› 2026, Vol. 47 ›› Issue (2) : 279-288. DOI: 10.19912/j.0254-0096.tynxb.2024-1722

LINE SEQUENCE REPAIRING METHOD OF INTEGRATED ENERGY SYSTEM FOR RESILIENCE ENHANCEMENT

Yu Songyuan¹, Ao Yun¹, Wu Ruxin¹, Wei Le¹, Xu Yuhan¹, Zhang Junsong²

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Abstract

As the coupling and interaction between heterogeneous energy sources in the integrated energy system deepen, operational risks are becoming increasingly significant. To mitigate the impact of extreme disaster events on the system, a line sequence repairing method of the integrated energy system aimed at enhancing resilience is proposed. Firstly, branch state variables are introduced. An islanding partitioning model based on fictitious flow is established, ensuring the continuous supply of critical loads. Secondly, a two-stage line sequence repairing model is developed. In the first stage, the objective is to minimize costs related to load curtailment, switch operation, wind and solar power curtailment penalties, coupling component operation, and start-stop, thereby formulating a plan for network reconstruction and islanding. In the second stage, the goal is to minimize post-repair power loss at node loads to determine the optimal repair sequence. Finally, a test system consisting of an IEEE 33-node system, an 11-node gas network, and a 6-node heat network and an actual integrated energy system are used for simulation verification. The results demonstrate that through dynamic cycles of network reconstruction, islanding partitioning, and temporal repairs, the system achieves efficient recovery, reduces load loss throughout the fault process, and enhances system resilience under extreme weather.

Key words

integrated energy system / islanding partitioning / line sequence repairing / extreme weather / resilience enhancement / network reconstruction

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Yu Songyuan, Ao Yun, Wu Ruxin, Wei Le, Xu Yuhan, Zhang Junsong. LINE SEQUENCE REPAIRING METHOD OF INTEGRATED ENERGY SYSTEM FOR RESILIENCE ENHANCEMENT[J]. Acta Energiae Solaris Sinica. 2026, 47(2): 279-288 https://doi.org/10.19912/j.0254-0096.tynxb.2024-1722

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