Results 21 to 30 of about 8,004,238 (365)

Ultra-short-term Interval Prediction of Wind Power Based on Graph Neural Network and Improved Bootstrap Technique

open access: yesJournal of Modern Power Systems and Clean Energy, 2023
Reliable and accurate ultra-short-term prediction of wind power is vital for the operation and optimization of power systems. However, the volatility and intermittence of wind power pose uncertainties to traditional point prediction, resulting in an ...
Wenlong Liao   +5 more
doaj   +1 more source

Dynamic directed graph convolution network based ultra‐short‐term forecasting method of distributed photovoltaic power to enhance the resilience and flexibility of distribution network

open access: yesIET Generation, Transmission & Distribution, 2023
Accurately forecasting regional distributed photovoltaic (DPV) power is crucial in mitigating the negative impact of high DPV penetration on the reliability and resilience of the distribution network.
Yuqing Wang   +4 more
semanticscholar   +1 more source

The Power Index of a Graph [PDF]

open access: yesGraphs and Combinatorics, 2017
The {\em power index} $ ( )$ of a graph $ $ is the least order of a group $G$ such that $ $ can embed into the power graph of $G$. Furthermore, this group $G$ is {\em $ $-optimal} if $G$ has order $ ( )$. We say that $ $ is {\em power-critical} if its order equals to $ ( )$. This paper focuses on the power indices of complete graphs, complete
Xuanlong Ma, Min Feng, Kaishun Wang
openaire   +2 more sources

Research Review of the Knowledge Graph and its Application in Power System Dispatching and Operation

open access: yesFrontiers in Energy Research, 2022
With the construction of a new power system and the proposal of a double carbon goal, power system operation data are growing explosively, and the optimization of power system dispatching operation is becoming more and more complex.
Junbin Chen   +5 more
doaj   +1 more source

Detection of false data injection attacks on power systems using graph edge-conditioned convolutional networks

open access: yesProtection and Control of Modern Power Systems, 2023
State estimation plays a vital role in the stable operation of modern power systems, but it is vulnerable to cyber attacks. False data injection attacks (FDIA), one of the most common cyber attacks, can tamper with measurement data and bypass the bad ...
Bairen Chen   +3 more
semanticscholar   +1 more source

The Surprising Power of Graph Neural Networks with Random Node Initialization [PDF]

open access: yesInternational Joint Conference on Artificial Intelligence, 2020
Graph neural networks (GNNs) are effective models for representation learning on relational data. However, standard GNNs are limited in their expressive power, as they cannot distinguish graphs beyond the capability of the Weisfeiler-Leman graph ...
Ralph Abboud   +3 more
semanticscholar   +1 more source

Grid-Graph Signal Processing (Grid-GSP): A Graph Signal Processing Framework for the Power Grid [PDF]

open access: yesIEEE Transactions on Signal Processing, 2021
The underlying theme of this paper is to explore the various facets of power systems data through the lens of graph signal processing (GSP), laying down the foundations of the Grid-GSP framework.
Raksha Ramakrishna, A. Scaglione
semanticscholar   +1 more source

Forbidden Subgraphs of Power Graphs [PDF]

open access: yesThe Electronic Journal of Combinatorics, 2021
The undirected power graph (or simply power graph) of a group $G$, denoted by $P(G)$, is a graph whose vertices are the elements of the group $G$, in which two vertices $u$ and $v$ are connected by an edge between if and only if either $u=v^i$ or $v=u^j$ for some $i$, $j$.
Manna, Pallabi   +2 more
openaire   +5 more sources

A network approach for power grid robustness against cascading failures [PDF]

open access: yes, 2015
Cascading failures are one of the main reasons for blackouts in electrical power grids. Stable power supply requires a robust design of the power grid topology.
Kooij, Robert E.   +3 more
core   +5 more sources

Magic powers of graphs [PDF]

open access: yesMathematica Bohemica, 1997
The concept of magic graph was introduced by J. Sedláček. A valuation of the edges of a graph by pairwise different positive numbers is called magic, if the sum of values of edges incident with a given vertex is the same for all vertices. If there exists a magic valuation of a graph \(G\), then \(G\) is called a magic graph.
Marián Trenkler, Vladimír Vetchý
openaire   +2 more sources

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