Please enable JavaScript to view this site.

Openwind Online Help

Navigation: » No topics above this level «

Glossary of Terms

Scroll Prev Top Next More

Ambient TI the average ambient turbulence intensity weighted by the wind speed distribution

Capacity factor the net energy divided by the number of hours in a year multipled by the nameplate capacity of the turbine

Gross energy – the estimated energy yield before array (wake) effects

Ideal energy – the gross energy expected if all the turbines were at the met mast location or if the speed-up ratios are all set to one (scale speed-ups by zero in Energy Capture Settings )

Net energy – the final estimated energy yield including all losses and curtailments

Theoretical gross energy – the gross energy plus any shutdown losses (modelled availability, temperature shutdown, temperature derating, scheduling, wind sector management, high wind hysteresis)

TI – turbulence intensity

TI@15m/s - the total TI at 15 m/s

Topographic efficiency – the ratio of gross energy to ideal energy or the effect of speed-up ratios. In general, for a site which has had a well-planned measurement campaign, this should be close to 100%

Total TI – the ambient TI plus any wake-induced TI

 

Please visit us at Openwind information page