There is strong demand in the wind industry for understanding,in great detail,the performance of operational wind farms.This can be achieved by collecting sufficient data from the standard SCADA system,the careful management of those data and the use of intelligent interrogation techniques.Recent years have seen rapid development in wind turbine technology,with modern turbines adopting variable speed and pitch concepts and complex solid state power conversion technology.Also,increasingly intelligent controller software programs now often include self protection algorithms,noise reduction and dynamic power curtailment as standard.