Guest lecture: A statistical perspective on wind power variability across time scales

Dirk Witthaut, junior professor at the research centre Jülich, Institute of Energy and Climate Research within System Analysis and Technology Evaluation.

2018.04.04 | Gorm Bruun Andresen

Date Thu 19 Apr
Time 10:00 11:00
Location Navitas, room 04.124, Inge Lehmanns Gade 10, 8000 Aarhus

The mitigation of climate change requires a rapid decarbonization of our energy supply. Renewable energy sources, in particular wind power and solar photovoltaics, have shown a remarkable progress in terms of technology and costs in the last decade. Nevertheless, the operation of a highly renewable energy system remains a challenge due to the strong variability of wind and power generation on various timescales.

In this talk, I will present some recent results on the statistics of wind power generation and power system operation, focusing on very short and very long time scales. Fluctuations of generation and demand on a sub-minute timescale are important for the dynamic stability and control of electric power grids. They manifest in the power grid mains frequency, providing a rich data source for a statistical analysis. On very long time scales wind power resources are determined by the global climatic conditions. I discuss the importance of natural climatic variability and potential impacts of climate change until the end of the century.

Lecture / talk