TY  - JOUR
AU  - Schäfer, Benjamin
AU  - Pesch, Thiemo
AU  - Manik, Debsankha
AU  - Gollenstede, Julian
AU  - Lin, Guosong
AU  - Beck, Hans-Peter
AU  - Witthaut, Dirk
AU  - Timme, Marc
TI  - Understanding Braess’ Paradox in power grids
JO  - Nature Communications
VL  - 13
IS  - 1
SN  - 2041-1723
CY  - [London]
PB  - Nature Publishing Group UK
M1  - FZJ-2022-06154
SP  - 5396
PY  - 2022
AB  - 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.
LB  - PUB:(DE-HGF)16
C6  - 36104335
UR  - <Go to ISI:>//WOS:000853935100011
DO  - DOI:10.1038/s41467-022-32917-6
UR  - https://juser.fz-juelich.de/record/916353
ER  -