Regensburg 2019 – wissenschaftliches Programm
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SOE: Fachverband Physik sozio-ökonomischer Systeme
SOE 18: Energy Networks (joint SOE/DY) (joint session SOE/DY)
SOE 18.4: Vortrag
Donnerstag, 4. April 2019, 12:15–12:30, H17
Effects of time delay on the control of synchronous electricity grids — •Philipp C. Böttcher1, Andreas Otto2, and Stefan Kettemann3 — 1DLR-Institut für Vernetzte Energiesysteme, Oldenburg — 2Institute of Physics, TU Chemnitz, Chemnitz — 3Department of Physics and Earth Sciences, Jacobs University, Bremen
In the course of the ’Energiewende’, highly volatile energy sources (i.e. wind and photovoltaics) will be introduced to a system built with conventional energy sources in mind.
Removing conventional energy sources and replacing them with fluctuating renewable generation that does not provide inertia could make the system vulnerable to disturbances.
Control mechanisms can only be employed by accurately measuring the system state (i.e. frequencies and load flows) and correctly communicating theses values.
The delay associated with the measurement, communication and deployment of control might play an increasingly important role in a system that relies on strongly fluctuating feed-in.
The control mechanisms used at the moment are integrated into a model of coupled oscillators which resembles the second order Kuramoto model. This model is used to investigate the behavior of the interconnected electricity grid.
To identify regions in parameter space that make stable grid operation possible, the linearized system is analyzed to create the system’s stability chart.
The influence of the control parameters, the underlying network topology and the delay on the grid frequency is of special interest.