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Microscopic Fluctuations in Power-Grid Frequency Recordings at the Subsecond Scale

Schäfer, Benjamin ORCID iD icon 1; Rydin Gorjão, Leonardo; Yalcin, G. Cigdem; Förstner, Ellen 1; Jumar, Richard ORCID iD icon 1; Maass, Heiko ORCID iD icon 1; Kühnapfel, Uwe 1; Hagenmeyer, Veit 1; Sayama, Hiroki [Hrsg.]
1 Institut für Automation und angewandte Informatik (IAI), Karlsruher Institut für Technologie (KIT)

Abstract:

Complex systems, such as the power grid, are essential for our daily lives. Many complex systems display multifractal behavior, correlated fluctuations and power laws. Whether the power-grid frequency, an indicator of the balance of supply and demand in the electricity grid, also displays such complexity remains a mostly open question. Within the present article, we utilize highly resolved measurements to quantify the properties of the power-grid frequency, making three key contributions: First, we demonstrate the existence of power laws in power-grid frequency measurements. Second, we show that below one second, the dynamics may fundamentally change, including a suddenly increasing power spectral density, emergence of multifractality and a change of correlation behavior. Third, we provide a simplified stochastic model involving positively correlated noise to reproduce the observed dynamics, possibly linked to frequency-dependent loads. Finally, we stress the need for high-quality measurements and discuss how we obtained the data analyzed here.


Verlagsausgabe §
DOI: 10.5445/IR/1000156973
Veröffentlicht am 16.03.2023
Originalveröffentlichung
DOI: 10.1155/2023/2657039
Scopus
Zitationen: 3
Dimensions
Zitationen: 3
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Automation und angewandte Informatik (IAI)
Publikationstyp Zeitschriftenaufsatz
Publikationsdatum 06.03.2023
Sprache Englisch
Identifikator ISSN: 1099-0526, 1076-2787
KITopen-ID: 1000156973
HGF-Programm 37.12.02 (POF IV, LK 01) Design,Operation & Digitalization of the Future Energy Grids
Erschienen in Complexity
Verlag Hindawi
Band 2023
Seiten Art.-Nr.: 2657039
Bemerkung zur Veröffentlichung Gefördert durch den KIT-Publikationsfonds
Nachgewiesen in Dimensions
Web of Science
Scopus
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