An overspeed protection system for a wind turbine having a hub and at least one rotor blade mounted to the hub includes a rotation sensor adapted for measuring a rotor speed of said wind turbine; a comparator connected to the rotation sensor and adapted for comparing the measured rotor speed with a predetermined threshold value of the rotor speed wherein the comparator outputs a signal indicative of the comparison; and an auxiliary pitch drive controller connected to the comparator and adapted to receive the signal indicative of the comparison, the auxiliary pitch drive controller being further adapted for controlling a pitch drive unit of the wind turbine independently of a main turbine controller and, if the threshold value is exceeded, to adjust a pitch angle of the rotor blade of the wind turbine so that aerodynamic braking of the wind turbine is effected.
[pdf] SCADA systems allow the remote operation of energy facilities such as wind power plants. In fact, most wind turbine vendors have designed and developed their own SCADA system in order to perform the control of their machines.
[pdf] How long it takes to charge a battery with a wind turbine depends on the size of wind turbine connected to the battery, and the size of the battery—or batteries if more than one is connected, and also of course.
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