Utilization of Wind Energy in Germany: Technology and Grid Integration Experience


Chair: István Erlich

University of Duisburg-Essen, Germany

István Erlich has been Professor and Head of the Institute of Electrical Power Systems of the University of Duisburg-Essen in Germany since 1988. He received his Dipl.-Ing. degree in electrical engineering from the University of Dresden in Germany in 1976 and his Ph.D. in 1983 from the same university. After his studies, he worked in Hungary, Berlin and Dresden in different fields of power engineering.

His major scientific interest is focused on power system stability and control, modeling and simulation of power system dynamics including intelligent system applications, smart grids and renewable energy sources. He is a member of VDE and senior member of IEEE. He is also chairing the IFAC Technical Committee 6.3 on Power and Energy Systems.



By the end of 2011 the installed wind power capacity in Germany has reached 30 GW. Considering the German peak load which is about 80 GW, it is easy to see why the integration of wind power has become a challenge. On the one hand the wind turbine technology and control have to be adapted to meet grid requirements, and on the other hand the grid itself must be redesigned to be able to transmit the power from the wind to the load centers. Of particular importance in the overall consideration are grid codes.

The tutorial will provide an overview about the current situation and experiences in Germany. In particular the following topics will be discussed:

* Wind Turbine (WT) Technologies

* German Grid Code

* WT Modeling and Control

* Fault Ride-Through

* Reactive Power and Voltage Control by Wind Turbines

* Contribution to Active Power Control

* Aspects of Wind Farm Design

The attendees will be enabled to understand the basic principles of wind turbine operation and control as well as their characteristic behaviors in steady state and following grid disturbances. The requirements for grid integration according to the German grid code and how those requirements can be met by modern wind turbines will be explained.