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Author ORCID Identifier
Date Available
7-20-2025
Year of Publication
2025
Document Type
Master's Thesis
Degree Name
Master of Science in Electrical Engineering (MSEE)
College
Engineering
Department/School/Program
Electrical Engineering and Computer Science
Faculty
Yuan Liao
Faculty
Caicheng Lu
Abstract
This thesis proposes a multi-task fault diagnosis framework for distribution systems based on Graph Convolutional Networks (GCN) and an enhanced Graph Attention Network (GATv2). By representing the power grid as a graph with electrical features and topological connections, the model simultaneously performs fault type classification and fault location prediction. The architecture incorporates residual connections, multi-head attention, and a Jumping Knowledge module to capture multi-scale structural patterns, while dynamic loss weighting ensures balanced task optimization under noise and sparsity. Experimental results on the IEEE 123-node test feeder demonstrate a fault classification accuracy of 96.43%, and fault localization accuracies of 84.64% (strict), 96.83% (1-hop), and 98.49% (2-hop). The model exhibits strong robustness and offers a potential solution for intelligent fault diagnosis in real-world power systems.
Digital Object Identifier (DOI)
https://doi.org/10.13023/etd.2025.266
Recommended Citation
Shan, Xingjian, "FAULT IDENTIFICATION AND LOCALIZATION IN DISTRIBUTION GRIDS BASED ON AN ATTENTION-HYBRID GRAPH NEURAL NETWORK" (2025). Theses and Dissertations--Electrical and Computer Engineering. 216.
https://uknowledge.uky.edu/ece_etds/216
