Journal Article

FZJ-2022-06154

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Understanding Braess’ Paradox in power grids

Schäfer, B. (Corresponding author) ; Pesch, T.FZJ* ; Manik, D. ; Gollenstede, J. ; Lin, G. ; Beck, H.-P. ; Witthaut, D.FZJ* ; Timme, M.

2022
Nature Publishing Group UK [London]

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Please use a persistent id in citations: http://hdl.handle.net/2128/33292  doi:10.1038/s41467-022-32917-6

Abstract: The ongoing energy transition requires power grid extensions to connect renewable generators to consumers and to transfer power among distant areas. The process of grid extension requires a large investment of resources and is supposed to make grid operation more robust. Yet, counter-intuitively, increasing the capacity of existing lines or adding new lines may also reduce the overall system performance and even promote blackouts due to Braess’ paradox. Braess’ paradox was theoretically modeled but not yet proven in realistically scaled power grids. Here, we present an experimental setup demonstrating Braess’ paradox in an AC power grid and show how it constrains ongoing large-scale grid extension projects. We present a topological theory that reveals the key mechanism and predicts Braessian grid extensions from the network structure. These results offer a theoretical method to understand and practical guidelines in support of preventing unsuitable infrastructures and the systemic planning of grid extensions.

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Contributing Institute(s):

1. Systemforschung und Technologische Entwicklung (IEK-STE)
2. Modellierung von Energiesystemen (IEK-10)

Research Program(s):

1. 1112 - Societally Feasible Transformation Pathways (POF4-111) (POF4-111)
2. VH-NG-1025 - Helmholtz Young Investigators Group "Efficiency, Emergence and Economics of future supply networks" (VH-NG-1025_20112014) (VH-NG-1025_20112014)
3. CoNDyNet 2 - Kollektive Nichtlineare Dynamik Komplexer Stromnetze (BMBF-03EK3055B) (BMBF-03EK3055B)
4. ES2050 - Energie System 2050 (ES2050) (ES2050)
5. 1122 - Design, Operation and Digitalization of the Future Energy Grids (POF4-112) (POF4-112)

Appears in the scientific report 2022

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