Understanding Braess' Paradox in power grids

Understanding Braess' Paradox in power grids

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, in...

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Veröffentlicht in:arXiv.org 2022-09
Hauptverfasser: Schäfer, Benjamin, Pesch, Thiemo, Debsankha Manik, Gollenstede, Julian, Lin, Guosong, Beck, Hans-Peter, Witthaut, Dirk, Timme, Marc
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Sprache:eng
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Computer Science - Systems and Control
Electric power grids
Paradoxes
Physics - Adaptation and Self-Organizing Systems
Physics - Computational Physics
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container_title arXiv.org
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creator Schäfer, Benjamin
Pesch, Thiemo
Debsankha Manik
Gollenstede, Julian
Lin, Guosong
Beck, Hans-Peter
Witthaut, Dirk
Timme, Marc
description 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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subjects Computer Science - Systems and Control
Electric power grids
Paradoxes
Physics - Adaptation and Self-Organizing Systems
Physics - Computational Physics
title Understanding Braess' Paradox in power grids
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