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] Currently in Croatia there's a total of 364 wind turbines which generate total of 970.15 MW or electric energy, but with new turbines coming on-line all the time, it is expected that by mid 2020s total installed power will reach 3,200 MW, [5] As of early 2020 Croatia generates around 28.3% renewable energy, Government hopes Croatia could generate around 37.5% renewable energy from wind and solar by 2030 and has adopted new strategy to achieve that target. [6]
[pdf] This new World Bank project will finance the necessary grid investment and Botswana’s first 50MW utility-scale battery energy storage system to enable the first wave of renewable energy generation to be smoothly integrated and managed in the grid.
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