Berlin 2015 – scientific programme

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DY: Fachverband Dynamik und Statistische Physik

DY 43: Energy Systems and Power Grid (joint session DY/ AK Energy /SOE)

DY 43.12: Talk

Thursday, March 19, 2015, 12:30–12:45, BH-N 243

Intermittency and Synchronization in Wind Farm — •Mehrnaz Anvari and Joachim Peinke — Institute of Physics and Forwind, Carl von Ossietzky University, 26111 Oldenburg, Germany

The renewable wind and solar sources and their share in electricity production have been increased constantly in recent years. These sources have new stochastic characteristics such as intermittency and non-Gaussian behavior, which may cause instability in power grids in very short-term time scales.

In this work, we focus on wind power that influenced by atmospheric turbulence. Hence frequent extreme fluctuations in power output of wind turbines are detectable. This intermittent behavior also, is present in cumulative power of the total wind field, even for a country-wide installation. To understand the origin of such extreme events, we consider the interactions between wind turbines and for this purpose, we evaluate the phase synchronization in wind farm. We conclude that, the existence of partial phase synchronization between turbines in specific time intervals can explain the origin of extreme events in this complex system. We found that higher synchronized wind turbines will produce higher intermittent power output.