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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)


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
DOI: 10.1155/2023/2657039
Zitationen: 3
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
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