Project

The purpose of the project is to analyze and develop models for describing the interaction of wind turbines and wind farms with other electricity production units and to analyze their properties with a view to power and frequency control and co-responsibility for system stability. Furthermore, the project will create a basis for assessing the limit for the share of wind energy in the Danish electricity system. The models will thus be able to analyze electricity systems with wind turbines, central power plants, combined heat and power units and energy storage, including the use of compensation units, etc. The project focuses on preparing the models from the transmission level, where in particular the expansion with large wind farms (onshore or offshore) and the problem of how the energy is to be transported to land from offshore farms (AC or DC transmission) are of interest. Through the project, models of the transmission network (AC and DC) with associated central combined heat and power units and loads and where the production from the decentralized combined heat and power plants is viewed from the transmission level will be built and implemented. Models of larger wind farms with different control strategies will be connected to this model. The models include and implement protection equipment and strategies for stability analysis. Wind farms with different generator/converter topologies are modeled and control strategies for power participation or frequency regulation on the grid are compared and optimized for production capability and/or stability conditions. The project is funded as a PSO project from Elkraft System and is being prepared by Birgitte Bak-Jensen, Zhe Chen and Hans Nielsen, Department of Energy Engineering, Aalborg University, Anca Hansen and Poul Sørensen, Risø, and Jesper Hjerrild, Elsam Engineering. In connection with the project, a Ph.D project is also being prepared by Akarin Suwannarat with the title Integration and control of wind farms in the Danish electricity system (see this).