Newsletter 11 November 2009
After the review meeting in June 2009 hosted by Vestas Wind Systems A/S, the project has entered a stage where focus is on dynamic models and the control. Central to the project is a common understanding of models and the effort continues to develop the wind farm simulator to a level where it can serve as a benchmark. Financially the projected effort has been adjusted to reflect actual person month costs, adding a total of 55 person months to the project.
Work progress and achievements during the period
During the previous 6 months, the following results have been achieved, aimed at meeting the overall objectives of the project:
Quasi-static flow models: work on the quasi-static models is on-going and the model being scaled to provide flow information for large-scale wind farms and to allow calculations of the expected electrical power output and the expected mechanical loads.
Dynamic flow models: The notion of effective wind speed was introduced, and promising results on the ability to model and predict wind speeds based on effective wind speed was achieved.
Supervisory control: Model Predictive Control (MPC) was selected as an appropriate technology for the wind farm problem. Linearization of relevant models of turbines and flow. In order to evaluate the methodology on wind farms, models suited for control as well as a cost function are needed.
Decentralized control: The price based methods for distributed control have been further developed in the context of Model Predictive Control (MPC). In order to evaluate the methodology on wind farms, models suited for control as well as a cost function are needed.
Case study and dissemination: In order to strengthen the cooperation between partners a farm simulator capable of simulating different park configurations and turbines is being developed. A statement of work for the simulator has been defined by negotiations with the project partners. The statement of work analyses the current state of the simulator and specifies the capabilities and requirements for the final simulator.
Results
Public publications are available on the publications page.