Results 31 to 40 of about 317,940 (197)

Measurement error evaluation method for voltage transformers in distribution networks based on self-attention and graph convolutional networks

open access: goldEnergy Informatics
Accurately evaluating the error of voltage transformers in distribution networks is crucial for the safe operation of power systems and the fairness of electricity trade.
Xiujuan Zeng   +4 more
doaj   +2 more sources

Graph Isomorphic Networks for Assessing Reliability of the Medium-Voltage Grid

open access: green, 2023
Ensuring electricity grid reliability becomes increasingly challenging with the shift towards renewable energy and declining conventional capacities. Distribution System Operators (DSOs) aim to achieve grid reliability by verifying the n-1 principle, ensuring continuous operation in case of component failure.
Charlotte Cambier van Nooten   +5 more
openalex   +4 more sources

Graph Neural Network-Based Approach for Detecting False Data Injection Attacks on Voltage Stability

open access: goldIEEE Open Access Journal of Power and Energy
The integration of information and communication technologies into modern power systems has contributed to enhanced efficiency, controllability, and voltage regulation.
Shahriar Rahman Fahim   +6 more
doaj   +2 more sources

A Topology Identification Strategy of Low-Voltage Distribution Grids Based on Feature-Enhanced Graph Attention Network

open access: goldEnergies
Accurate topological connectivity is critical for the safe operation and management of low-voltage distribution grids (LVDGs). However, due to the complexity of the structure and the lack of measurement equipment, obtaining and maintaining these ...
Yang Lei   +4 more
doaj   +2 more sources

Searching for Voltage Graph-Based LDPC Tailbiting Codes With Large Girth [PDF]

open access: greenIEEE Transactions on Information Theory, 2011
The relation between parity-check matrices of quasi-cyclic (QC) low-density parity-check (LDPC) codes and biadjacency matrices of bipartite graphs supports searching for powerful LDPC block codes. Using the principle of tailbiting, compact representations of bipartite graphs based on convolutional codes can be found. Bounds on the girth and the minimum
Irina E. Bocharova   +4 more
openalex   +6 more sources

A Note on Constructing Large Cayley Graphs of Given Degree and Diameter by Voltage Assignments [PDF]

open access: bronzeThe Electronic Journal of Combinatorics, 1997
Voltage graphs are a powerful tool for constructing large graphs (called lifts) with prescribed properties as covering spaces of small base graphs. This makes them suitable for application to the degree/diameter problem, which is to determine the largest order of a graph with given degree and diameter.
Ljiljana Branković   +4 more
openalex   +4 more sources

Voltage Graphs and Cluster Consensus with Point Group Symmetries

open access: green, 2016
A cluster consensus system is a multi-agent system in which the autonomous agents communicate to form multiple clusters, with each cluster of agents asymptotically converging to the same clustering point. We introduce in this paper a special class of cluster consensus dynamics, termed the $G$-clustering dynamics for $G$ a point group, whereby the ...
Xudong Chen   +2 more
openalex   +4 more sources

Remote online monitoring system for transformer winding deformation based on current–voltage characterized graph

open access: yesEnergy Reports, 2023
Transformer winding deformation threatens the power system’s safe and stable operation, and early detection of transformer winding deformation can reduce economic losses.
Yan Zhou   +6 more
doaj   +1 more source

Spatial-Temporal Recurrent Graph Neural Networks for Fault Diagnostics in Power Distribution Systems

open access: yesIEEE Access, 2023
Fault diagnostics are extremely important to decide proper actions toward fault isolation and system restoration. The growing integration of inverter-based distributed energy resources imposes strong influences on fault detection using traditional ...
Bang L. H. Nguyen   +4 more
doaj   +1 more source

Distributed Volt-Var Curve Optimization Using a Cellular Computational Network Representation of an Electric Power Distribution System

open access: yesEnergies, 2022
Voltage control in modern electric power distribution systems has become challenging due to the increasing penetration of distributed energy resources (DER).
Hasala Dharmawardena   +1 more
doaj   +1 more source

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