Annual Report 2009 - webfiles its vmware

• Validation of the generic wind turbine models against measurement data.• Grid integration study of wind power. The study focuses on reactive powerresponses of wind farms during and following faults on the regionalnetwork voltage stability.The project is conducted as a part of a larger project named “Model developmentfor power system analysis with a substantial wind energy capacity installed in theNordic grid”, which involves Nordic and Baltic countries.Wind Park Design for HVDC-connected wind parkParticipant: Stefan LundbergSponsor: VindforskIn this project, a cost-effective solution is proposed for a sea-based wind parklocated at a substantial distance (>50 km) from a suitable grid connection point.The idea is to utilize the controllability given by a dc-transmission between thewind park and the grid connection point. This solution gives good controllability inthe grid connection point. Moreover, this solution makes it possible to use cheapwind turbine systems and still comply with the coming Grid Code requirements. Bycheap wind turbine we mean a DFIG wind turbine with an extra small converterand no individual Ride-Through function. Last but not least, the loss reductionpossibly achieved by the freedom in setting the local wind turbine grid voltage andfrequency will be investigated.Wind Power Asset Management and Reliability Centred Asset ManagementParticipants: Francois Besnard (KTH), Katharina Fischer, Lina BertlingSponsor: Vindforsk, CSES, ChalmersWind power plays a central role for the development of a sustainable power supplysystem. Ambitious goals have been set to promote the strong increase of windenergy utilization required in view of climate change and limited primary energyresources. Offshore wind power in particular is seen as the most promising newenergy technology. However, the present high maintenance costs for windturbines (especially at offshore sites) impede the growth of wind power necessaryto reach the goals. Recent research shows that the present maintenance, both onandoffshore, is not being optimized and there could be large potential savings byreducing (a) the cost for maintenance activities and component failure, and (b)cost due to production losses, especially for large offshore wind parks.To reach a cost-efficient maintenance management is the objective in the project“Maintenance Management of Wind Power Systems by means of Reliability-Centred Maintenance (RCM) and Condition Monitoring Systems (CMS)”, withpost-doc Katharina Fischer as main researcher. For this purpose, the concept ofreliability-centred maintenance, which is established and successfully applied in27 |