Berlin 2015 – scientific programme

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DY: Fachverband Dynamik und Statistische Physik

DY 60: Poster - complex systems and data analysis

DY 60.8: Poster

Thursday, March 19, 2015, 16:00–18:00, Poster A

Long-range response in AC and DC electricity grids — •Daniel Jung and Stefan Kettemann — School of Engineering and Science, Jacobs University Bremen gGmbH, Campus Ring 1, 28759 Bremen, Germany

Local changes in the topology of electricity grids can cause overloads far away from the disturbance [1], making the prediction of the robustness against power outages a challenging task. The impact of single-line additions on the long-range response of DC electricity grids has recently been studied [2]. With this work, we extend the investigation to the case of alternating currents. Therefore, we study electricity grids with a random distribution of complex impedances on the edges of a regular 2D grid. By determining the resonance frequencies of the circuit, we are able to forecast consequences for the conditions for stable grid operation. Further, we analyse the spatial distribution of the voltage amplitudes.

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

[2] D Labavic, R Suciu, H Meyer-Ortmanns, S Kettemann, Eur. Phys. J. Spec. Top. (2014).