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Open AccessJournal ArticleDOI

Fault Location in Power Distribution Systems via Deep Graph Convolutional Networks

TLDR
In this article, a novel graph convolutional network (GCN) framework is proposed for fault location in power distribution networks. And the proposed approach integrates multiple measurements at different buses while taking system topology into account.
Abstract
This paper develops a novel graph convolutional network (GCN) framework for fault location in power distribution networks. The proposed approach integrates multiple measurements at different buses while taking system topology into account. The effectiveness of the GCN model is corroborated by the IEEE 123 bus benchmark system. Simulation results show that the GCN model significantly outperforms other widely-used machine learning schemes with very high fault location accuracy. In addition, the proposed approach is robust to measurement noise and data loss errors. Data visualization results of two competing neural networks are presented to explore the mechanism of GCNs superior performance. A data augmentation procedure is proposed to increase the robustness of the model under various levels of noise and data loss errors. Further experiments show that the model can adapt to topology changes of distribution networks and perform well with a limited number of measured buses.

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Citations
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Journal ArticleDOI

Artificial intelligence techniques for stability analysis and control in smart grids: Methodologies, applications, challenges and future directions

TL;DR: A general overview of AI, including its definitions, history and state-of-the-art methodologies, and a comprehensive review of its applications to security assessment, stability assessment, fault diagnosis, and stability control in smart grids are presented.
Journal ArticleDOI

A Review of Graph Neural Networks and Their Applications in Power Systems

TL;DR: A comprehensive overview of graph neural networks (GNNs) in power systems is proposed, and several classical paradigms of GNNs structures are summarized, and key applications inPower systems, such as fault scenario application, time series prediction, power flow calculation, and data generation are reviewed in detail.
Journal ArticleDOI

Recurrent Graph Convolutional Network-Based Multi-Task Transient Stability Assessment Framework in Power System

TL;DR: A new graph-based framework, which is termed as recurrent graph convolutional network based multi-task TSA (RGCN-MT-TSA), which provides joint training of stability classification and critical generator identification in the framework, and accelerate the process with parallel computing.
Journal ArticleDOI

Multi-Meteorological-Factor-Based Graph Modeling for Photovoltaic Power Forecasting

TL;DR: The testing results suggest that the proposed multi-graph model outperforms other benchmark models in terms of accuracy under day-ahead forecasting cases, and achieves a reduced cost of training time comparing to deep-learning benchmark models.
Journal ArticleDOI

Data-driven short-term voltage stability assessment based on spatial-temporal graph convolutional network

TL;DR: A novel spatial-temporal graph convolutional network (STGCN) that incorporates the characteristics of SVS into the data-driven classification model and can result in higher assessment accuracy, better robustness and adaptability than conventional methods.
References
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Journal Article

Visualizing Data using t-SNE

TL;DR: A new technique called t-SNE that visualizes high-dimensional data by giving each datapoint a location in a two or three-dimensional map, a variation of Stochastic Neighbor Embedding that is much easier to optimize, and produces significantly better visualizations by reducing the tendency to crowd points together in the center of the map.
Journal ArticleDOI

A Survey on Transfer Learning

TL;DR: The relationship between transfer learning and other related machine learning techniques such as domain adaptation, multitask learning and sample selection bias, as well as covariate shift are discussed.
Posted Content

Convolutional Neural Networks on Graphs with Fast Localized Spectral Filtering

TL;DR: In this article, a spectral graph theory formulation of convolutional neural networks (CNNs) was proposed to learn local, stationary, and compositional features on graphs, and the proposed technique offers the same linear computational complexity and constant learning complexity as classical CNNs while being universal to any graph structure.
Journal ArticleDOI

The emerging field of signal processing on graphs: Extending high-dimensional data analysis to networks and other irregular domains

TL;DR: The field of signal processing on graphs merges algebraic and spectral graph theoretic concepts with computational harmonic analysis to process high-dimensional data on graphs as discussed by the authors, which are the analogs to the classical frequency domain and highlight the importance of incorporating the irregular structures of graph data domains when processing signals on graphs.
Proceedings Article

Spectral Networks and Locally Connected Networks on Graphs

TL;DR: This paper considers possible generalizations of CNNs to signals defined on more general domains without the action of a translation group, and proposes two constructions, one based upon a hierarchical clustering of the domain, and another based on the spectrum of the graph Laplacian.
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