S E S Pf U

Where S(P); is the power error band (computed from S;) for a given confidence level and f (U;) is the annual probability of the wind being in the ith bin. It should be noted that this treatment only deals with random errors (referred to as category A uncertainties by the IEC) and that the effect of bias errors associated with the instruments and other factors (category B uncertainties) should be included separately. The RISO work concluded that the testing procedures were not accurate enough to identify with confidence differences in performance of less than 5 percent.

The current IEC standard presents a detailed methodology for analysing how errors propagate through the power curve to the energy yield calculations. Because of its importance, the approach is outlined here.

Renewable Energy Eco Friendly

Renewable Energy Eco Friendly

Renewable energy is energy that is generated from sunlight, rain, tides, geothermal heat and wind. These sources are naturally and constantly replenished, which is why they are deemed as renewable.

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