IEC Acoustic Standard IEC 61400-11
IEC Acoustic Standard IEC 61400-11
IEC Acoustic Standard IEC 61400-11
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Bin Centers<br />
Bin wind speed averages likely will not<br />
be at the center so interpolate (or<br />
extrapolate at the ends) to get bin<br />
centers<br />
– Extrapolate 6 and 7 m/s bins to get<br />
the bin center at 6 m/s<br />
– Interpolate 6 and 7 m/s bins to get the<br />
bin center at 7 m/s<br />
– Interpolate 8 and 9 m/s bins to get the<br />
bin center at 8 and 9 m/s<br />
– Interpolate 9 and 10 m/s bins to get<br />
the bin center at 10 m/s<br />
Find turbine and background bin center<br />
values<br />
NATIONAL RENEWABLE ENERGY LABORATORY<br />
WS bin WS avg count spl avg<br />
6 6.02 16 48.0<br />
7 7.28 25 47.8<br />
8 7.95 47 50.4<br />
9 9.10 64 52.5<br />
10 10.20 55 55.7<br />
WS bin slope offset int spl<br />
6 -0.16 49.0 48.0<br />
7 -0.16 49.0 47.8<br />
8 1.83 35.9 50.5<br />
9 1.83 35.9 52.3<br />
10 2.91 26.0 55.1
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