Regensburg 2016 – wissenschaftliches Programm

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DY: Fachverband Dynamik und Statistische Physik

DY 12: Energy systems

DY 12.3: Vortrag

Montag, 7. März 2016, 15:30–15:45, H47

Long-range Response in AC Electricity Grids — •Daniel Jung and Stefan Kettemann — Department of Physics & Earth Sciences, Focus Area Health, Jacobs University Bremen, 28759 Bremen, Germany.

The transition towards renewable energy sources (RES) leads naturally to a decentralized and fluctuating production of electrical power. Furthermore, it is well known not only among grid operators that local changes to the grid topology – regardless if intentional or accidental – can have global effects on the flow of power within the entire network [1]. Thus it can be expected that ensuring stable grid operation becomes more challenging with an increasing share of RES. In a model-based ansatz focussing on decentral power production, the impact of single-line additions on the long-range response of DC electricity grids has recently been studied numerically [2]. By solving the real part of the static AC load flow equations, we conduct a similar investigation for AC grids. For intermediate distances in a regular 2D grid, we find a power law behavior for the change of power flow as a function of distance to the disturbance. Furthermore, the power exponent saturates in the limit of large system sizes. We also compare the results of the regular 2D grid topology to a model topology of the German transmission grid.

[1] D. Witthaut and M. Timme, Eur. Phys. J. B 86, 377 (2013).

[2] D. Labavić, R. Suciu, H. Meyer-Ortmanns, and S. Kettemann, Eur. Phys. J. Spec. Top. 223, 2517 (2014), arXiv:arXiv:1406.4699v1.