Searching for small-world and scale-free behaviour in long-term historical data of a real-world power grid

Abstract Since the introduction of small-world and scale-free properties, there is an ongoing discussion on how certain real-world networks fit into these network science categories. While the electrical power grid was among the most discussed examples of these real-word networks, published results...

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Autores principales:	Bálint Hartmann, Viktória Sugár
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/09f74106d5284cf4913e1c0713c7ea4e
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id	oai:doaj.org-article:09f74106d5284cf4913e1c0713c7ea4e
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spelling	oai:doaj.org-article:09f74106d5284cf4913e1c0713c7ea4e2021-12-02T17:04:07ZSearching for small-world and scale-free behaviour in long-term historical data of a real-world power grid10.1038/s41598-021-86103-72045-2322https://doaj.org/article/09f74106d5284cf4913e1c0713c7ea4e2021-03-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-86103-7https://doaj.org/toc/2045-2322Abstract Since the introduction of small-world and scale-free properties, there is an ongoing discussion on how certain real-world networks fit into these network science categories. While the electrical power grid was among the most discussed examples of these real-word networks, published results are controversial, and studies usually fail to take the aspects of network evolution into consideration. Consequently, while there is a broad agreement that power grids are small-world networks and might show scale-free behaviour; although very few attempts have been made to find how these characteristics of the network are related to grid infrastructure development or other underlying phenomena. In this paper the authors use the 70-year-long historical dataset (1949–2019) of the Hungarian power grid to perform complex network analysis, which is the first attempt to evaluate small-world and scale-free properties on long-term real-world data. The results of the analysis suggest that power grids show small-world behaviour only after the introduction of multiple voltage levels. It is also demonstrated that the node distribution of the examined power grid does not show scale-free behaviour and that the scaling is stabilised around certain values after the initial phase of grid evolution.Bálint HartmannViktória SugárNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-10 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Bálint Hartmann Viktória Sugár Searching for small-world and scale-free behaviour in long-term historical data of a real-world power grid
description	Abstract Since the introduction of small-world and scale-free properties, there is an ongoing discussion on how certain real-world networks fit into these network science categories. While the electrical power grid was among the most discussed examples of these real-word networks, published results are controversial, and studies usually fail to take the aspects of network evolution into consideration. Consequently, while there is a broad agreement that power grids are small-world networks and might show scale-free behaviour; although very few attempts have been made to find how these characteristics of the network are related to grid infrastructure development or other underlying phenomena. In this paper the authors use the 70-year-long historical dataset (1949–2019) of the Hungarian power grid to perform complex network analysis, which is the first attempt to evaluate small-world and scale-free properties on long-term real-world data. The results of the analysis suggest that power grids show small-world behaviour only after the introduction of multiple voltage levels. It is also demonstrated that the node distribution of the examined power grid does not show scale-free behaviour and that the scaling is stabilised around certain values after the initial phase of grid evolution.
format	article
author	Bálint Hartmann Viktória Sugár
author_facet	Bálint Hartmann Viktória Sugár
author_sort	Bálint Hartmann
title	Searching for small-world and scale-free behaviour in long-term historical data of a real-world power grid
title_short	Searching for small-world and scale-free behaviour in long-term historical data of a real-world power grid
title_full	Searching for small-world and scale-free behaviour in long-term historical data of a real-world power grid
title_fullStr	Searching for small-world and scale-free behaviour in long-term historical data of a real-world power grid
title_full_unstemmed	Searching for small-world and scale-free behaviour in long-term historical data of a real-world power grid
title_sort	searching for small-world and scale-free behaviour in long-term historical data of a real-world power grid
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/09f74106d5284cf4913e1c0713c7ea4e
work_keys_str_mv	AT balinthartmann searchingforsmallworldandscalefreebehaviourinlongtermhistoricaldataofarealworldpowergrid AT viktoriasugar searchingforsmallworldandscalefreebehaviourinlongtermhistoricaldataofarealworldpowergrid
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Searching for small-world and scale-free behaviour in long-term historical data of a real-world power grid

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