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Two-Stage Dynamic Partitioning Strategy Based on Grid Structure Feature and Node Voltage Characteristics for Power Systems

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Titel: Two-Stage Dynamic Partitioning Strategy Based on Grid Structure Feature and Node Voltage Characteristics for Power Systems
Autoren: Lixia Sun, Xianxue Sha, Shuo Zhang, Jiahao Wang, Yiping Yu
Quelle: Energies, Vol 18, Iss 10, p 2544 (2025)
Verlagsinformationen: MDPI AG, 2025.
Publikationsjahr: 2025
Bestand: LCC:Technology
Schlagwörter: structure–function coupling, electrical coupling strength, node voltage correlation, two-stage partitioning, modularity, Technology
Beschreibung: To enhance the adaptability of grid partitioning under transient scenarios, this paper proposes a two-stage dynamic partitioning strategy based on structure–function coupling. Electrical coupling strength is first characterized using short-circuit impedance and the sensitivity between reactive power and voltage, while transient voltage correlation is incorporated through cosine similarity as edge weights in a graph model. Grid partitioning is then conducted by maximizing modularity through a staged approach that ensures network connectivity and automatically determines partition numbers. Case studies on the modified IEEE 39-bus system demonstrate that compared with transient voltage-based partitioning and conventional complex network methods, the proposed approach improves modularity by 69%, reduces the maximum post-fault voltage deviation by 38.6%, and achieves the highest regional decoupling rate. The result shows strong intra-regional cohesion and weak inter-regional connectivity, verifying the strategy’s effectiveness in enhancing adaptability and decoupling under transient conditions.
Publikationsart: article
Dateibeschreibung: electronic resource
Sprache: English
ISSN: 1996-1073
Relation: https://www.mdpi.com/1996-1073/18/10/2544; https://doaj.org/toc/1996-1073
DOI: 10.3390/en18102544
Zugangs-URL: https://doaj.org/article/b2063645214c4fd982221c918034e9fb
Dokumentencode: edsdoj.b2063645214c4fd982221c918034e9fb
Datenbank: Directory of Open Access Journals
Beschreibung
Abstract:To enhance the adaptability of grid partitioning under transient scenarios, this paper proposes a two-stage dynamic partitioning strategy based on structure–function coupling. Electrical coupling strength is first characterized using short-circuit impedance and the sensitivity between reactive power and voltage, while transient voltage correlation is incorporated through cosine similarity as edge weights in a graph model. Grid partitioning is then conducted by maximizing modularity through a staged approach that ensures network connectivity and automatically determines partition numbers. Case studies on the modified IEEE 39-bus system demonstrate that compared with transient voltage-based partitioning and conventional complex network methods, the proposed approach improves modularity by 69%, reduces the maximum post-fault voltage deviation by 38.6%, and achieves the highest regional decoupling rate. The result shows strong intra-regional cohesion and weak inter-regional connectivity, verifying the strategy’s effectiveness in enhancing adaptability and decoupling under transient conditions.
ISSN:19961073
DOI:10.3390/en18102544