Work

Method for Partition Reconfiguration and Mutual Aid of Power Grids Under Extreme Events Oriented to Critical Load Guarantee

Year: 2025

Type: article

Abstract: To address the challenge of frequent extreme events causing power grid failures and traditional post-fault recovery modes struggling to meet the rigid demand for continuous power supply to critical loads, this paper proposes a partition-based two-layer optimization strategy. First, a partitioning index coupling active power flow with reactive voltage sensitivity is constructed, and the Fast Newman algorithm is applied to obtain partitions tailored to extreme events. Second, a two-layer optimization model is established: the upper layer performs network reconfiguration to minimize the total load curtailment, while the lower layer coordinates adjustable resources and power mutual aid between partitions. A simulation verification using the IEEE 39-bus system shows that the proposed method efficiently makes decisions during extreme events, achieving zero interruption for critical loads and reducing the curtailment of non-critical loads to 374.9 MW—a reduction of 54 percent compared to the traditional centralized dispatch model. The partitioning results also exhibit a high modularity of 0.6554 and a low boundary power flow factor of 0.1321, confirming the structural and functional advantages of the proposed approach. The method demonstrates good practical application value in enhancing grid resilience.

Source: Processes

DOI: 10.3390/pr13113557

Authors: Guoqing Shan, Chuanliang Xiao, Weiwei Miao, Ning Zhou, Xinyu Wei, Facai Xing

Institutions: Shandong University of Technology, State Grid Shandong Electric Power Company (China)

Language: English

Topic: Optimal Power Flow Distribution

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

SDGs: Industry, innovation and infrastructure, Affordable and clean energy

Open Access status: gold

Estimated APC paid: $2,896