Voltage collapse in complex power grids

Verfasser / Beitragende:
[John W. Simpson-Porco, Florian; id_orcid 0000-0002-9649-5305 Dörfler, Francesco Bullo]
Ort, Verlag, Jahr:
2016
Enthalten in:
Nature Communications, 7, p. 10790
Format:
Artikel (online)
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024 7 0 |a 10.3929/ethz-b-000113968  |2 doi 
024 7 0 |a 10.1038/ncomms10790  |2 doi 
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100 1 |a Simpson-Porco  |D John W. 
245 1 0 |a Voltage collapse in complex power grids  |h [Elektronische Daten]  |c [John W. Simpson-Porco, Florian; id_orcid 0000-0002-9649-5305 Dörfler, Francesco Bullo] 
246 0 |a Nat Commun 
506 |a Open access  |2 ethresearch 
520 3 |a A large-scale power grid's ability to transfer energy from producers to consumers is constrained by both the network structure and the nonlinear physics of power flow. Violations of these constraints have been observed to result in voltage collapse blackouts, where nodal voltages slowly decline before precipitously falling. However, methods to test for voltage collapse are dominantly simulation-based, offering little theoretical insight into how grid structure influences stability margins. For a simplified power flow model, here we derive a closed-form condition under which a power network is safe from voltage collapse. The condition combines the complex structure of the network with the reactive power demands of loads to produce a node-by-node measure of grid stress, a prediction of the largest nodal voltage deviation, and an estimate of the distance to collapse. We extensively test our predictions on large-scale systems, highlighting how our condition can be leveraged to increase grid stability margins. 
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700 1 |a Dörfler  |D Florian; id_orcid 0000-0002-9649-5305  |e joint author 
700 1 |a Bullo  |D Francesco  |e joint author 
773 0 |t Nature Communications  |d London : Nature Publishing Group  |g 7, p. 10790  |x 2041-1723 
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950 |B ETHRESEARCH  |P 100  |E 1-  |a Simpson-Porco  |D John W. 
950 |B ETHRESEARCH  |P 700  |E 1-  |a Dörfler  |D Florian; id_orcid 0000-0002-9649-5305  |e joint author 
950 |B ETHRESEARCH  |P 700  |E 1-  |a Bullo  |D Francesco  |e joint author 
950 |B ETHRESEARCH  |P 773  |E 0-  |t Nature Communications  |d London : Nature Publishing Group  |g 7, p. 10790  |x 2041-1723 
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