|
KMID : 1024520160250020247
|
|
Journal of the Environmental Sciences
2016 Volume.25 No. 2 p.247 ~ p.257
|
|
|
A Study of Energy Production Change according to Atmospheric Stability and Equivalent Wind Speed in the Offshore Wind Farm using CFD Program
|
|
Ryu Geon-Hwa
Kim Dong-Hyuk
Lee Hwa-Woon
Park Soon-Young
Kim Hyun-Goo
|
|
|
Abstract
|
|
|
To predict annual energy production (AEP) accurately in the wind farm where located in Seongsan, Jeju Island, Equivalent
wind speed (EQ) which can consider vertical wind shear well than Hub height wind speed (HB) is calculated. AEP is produced by CFD model WindSim from National wind resource map. EQ shows a tendency to be underestimated about 2.7% (0.21 m/s) than HB. The difference becomes to be large at nighttime when wind shear is large. EQ can be also affected by atmospheric stability so that is classified by wind shear exponent (��). AEP is increased by 11% when atmosphere becomes to be stabilized(�� > 0.2) than it is convective (�� < 0.1). However, it is found that extreme wind shear (�� > 0.3) is hazardous for power generation. This results represent that AEP calculated by EQ can provide improved accuracy to short-term wind power forecast and wind resource assessment.
|
|
|
KEYWORD
|
|
|
Equivalent wind speed, Atmospheric stability, Wind shear, Wind energy, AEP, CFD
|
|
|
FullTexts / Linksout information
|
|
|
|
|
|
Listed journal information
|
|
|