is placed on top of the tower 2 a low speed shaft extends out of the nacelle front and is connected with a wind turbine rotor through a wind turbine hub 4 the wind turbine rotor comprises at least one rotor blade e g three rotor blades 5 as illustrated fig2 illustrates an overview of a typical wind power plant wpp according an embodiment of the invention a wind power plant may in some contexts be referred to as wind parks or wind farms a wind power plant comprises a number of wind turbines wt located in the same area in a group onshore or offshore the wind turbines may be assembled to constitute a total unified power producing unit that can be connected to the utility grid a wind power plant typically has a u201c master u201d or central controller cc the central controller cc may according to an embodiment of the invention be located as part of or in relation to a scada server the central controller cc may be related to a control station or substation which may comprise a number of computers or processing units the central controller cc may also have a processing unit and may typically comprise means for continuously monitoring the condition of the wind turbines and collect statistics on its operation and may at the same time send control instructions to the wind turbines the.