热稳定性对近海风电场影响研究
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摘要
通过某近海风电场热稳定性研究,比较得出适合近海风电场的热稳定性判断方法,并研究不同热稳定性下风电机组输出功率特性,分析粗糙度和热稳定性对风电场影响关系,修正Jensen的尾流损耗系数。结果显示:热稳定性随时间变化,对海上风电场风能影响较大,不同热稳定性条件下风力发电机组输出功率变化规律不同,修正后的尾流模型计算结果与实际值接近。
In this paper,by means of the study of an offshore windfarm about the atmospheric stability,conclusion is drawn that Richardson gradient method is suitable for the judgment of atmospheric stability for offshore windfarm.Meanwhile,the variation of output power of wind turbine in different atmospheric stabilitie is researched;the Jensen model is modified with appropriate wake decay coefficient in different atmospheric stabilities. The results showed that the atmospheric stability changes with time and has a great influence on the wind power of the offshore windfarm. The variation of the output power of the wind turbine is different under different atmospheric stability conditions. The calculated results of the revised wakes model are close to the actual value.
In this paper,by means of the study of an offshore windfarm about the atmospheric stability,conclusion is drawn that Richardson gradient method is suitable for the judgment of atmospheric stability for offshore windfarm.Meanwhile,the variation of output power of wind turbine in different atmospheric stabilitie is researched;the Jensen model is modified with appropriate wake decay coefficient in different atmospheric stabilities. The results showed that the atmospheric stability changes with time and has a great influence on the wind power of the offshore windfarm. The variation of the output power of the wind turbine is different under different atmospheric stability conditions. The calculated results of the revised wakes model are close to the actual value.
引文
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[13] Sonia Wharton, Julie K Lundquist. Atmosphericstability affects wind turbine power collection[J].Enviromental Research Letters,2012,7(1):45—51.
[14]何仲阳,宋梦譞,张兴.地表温度对风场模拟的影响[J].化工学报,2012,63(s1):7—11.[14] He Zhongyang,Song Mengxuan,Zhang Xing. Influenceof terrain surface temperature on wind farm simulation[J]. Ciesc Joural,2012,63(s1):7—11.
[15]张双益,胡非,王益群,等.大型海上风电场尾流模型及大气稳定度影响研究[J].风能,2017,8(8):62—67.[15] Zhang Shuangyi,Hu Fei,Wang Yiqun,et al. Study onwake models and atmospheric stability of large offshorewind farms[J]. Wind Energy,2017,8(8):62—67.
[2]谢育彤.风电行业在十三五期间将进入调整期[EB/OL]. http://www.qufair.com/news/2016/07/08/5499.shtml,2016-07-08.[2] Xie Yutong. The wind power industry will enter a periodof adjustment during 13th Five-Year[EB/OL]. http://www. qufair.com/news/2016/07/08/5499.shtml, 2016-07-08.
[3] Olivier Texier, Tristan Claren. Integration ofatmospheric stability in wind power assessment throughCFD modeling[A]. The European Wind EnergyAssociation, Copenhaven[C], Copenhagen, 2012,562—568.
[4] Giacomo Valerio Iungo. Experimental characterization ofwind turbine wakes:Wind tunnel tests and wind LiDARmeasurements[J]. Journal of Wind Engineering andIndustrial Aerodynamics,2016,149:35—39.
[5] Alfredo Pe?a,Pierre-Elouan Réthoré,Ole Rathmann.Modeling large offshore wind farms under differentatmospheric stability regimes with the Jensen wakemodel[J]. Renewable Energy,2014,70:164—171.
[6] Andrea Venora. Monin-Obukhov similarity theoryapplied to offshore wind data validation of models toestimate the offshore wind speed profile in the north sea[D]. Delf:Delf Univerisity of Technology,2009.
[7] Blackadar A K. The vertical distribution of wind andturbulent exchange in a neutral atmosphere[J]. Journalof Geophysical Research,1962,67(8):3095—3102.
[8] Lettau H H. Theoretical wind spirals in the boundarylayer of a barotropic atmosphere[J]. Contributions toAtmospheric Physics,1962,35:195—212.
[9] Pe?a A,Gryning S E,Hasager C B. Comparing mixing-length models of the diabatic wind profile overhomogeneous terrain[J]. Theoretical and AppliedClimatology,2010,100:325—335.
[10] Stull R B. An Introduction to boundary layer meteorology[M]. The Netherlands:Kluwer Academic Publishers,1988.
[11] Gryning S E,Batchvarova E,Brümmer B,et al. On theextension of the wind profile over homogeneous terrainbeyond the surface layer[J]. Boundary-LayerMeteorology,2007,124(2):251—268.
[12] Nikola Sucevic, Zeljko, Djurisic. Influence ofatmospheric stability variation on uncertainties of windfarm production estimation[A]. The European WindEnergy Association[C],Copenhaven,2012,1023—1026.
[13] Sonia Wharton, Julie K Lundquist. Atmosphericstability affects wind turbine power collection[J].Enviromental Research Letters,2012,7(1):45—51.
[14]何仲阳,宋梦譞,张兴.地表温度对风场模拟的影响[J].化工学报,2012,63(s1):7—11.[14] He Zhongyang,Song Mengxuan,Zhang Xing. Influenceof terrain surface temperature on wind farm simulation[J]. Ciesc Joural,2012,63(s1):7—11.
[15]张双益,胡非,王益群,等.大型海上风电场尾流模型及大气稳定度影响研究[J].风能,2017,8(8):62—67.[15] Zhang Shuangyi,Hu Fei,Wang Yiqun,et al. Study onwake models and atmospheric stability of large offshorewind farms[J]. Wind Energy,2017,8(8):62—67.