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

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...

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Bibliographic Details
Published in:Energies (Basel) Vol. 18; no. 10; p. 2544
Main Authors: Sun, Lixia, Sha, Xianxue, Zhang, Shuo, Wang, Jiahao, Yu, Yiping
Format: Journal Article
Language:English
Published: Basel MDPI AG 01.05.2025
Subjects:
Case studies
Electric power systems
electrical coupling strength
Iran
Modularity
Network topologies
node voltage correlation
Regions
Social networks
structure–function coupling
Systems stability
two-stage partitioning
Iran
ISSN:1996-1073, 1996-1073
Online Access:Get full text
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Summary: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.
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ISSN:1996-1073
1996-1073
DOI:10.3390/en18102544