基于工程经济学评估的风力机叶片长度设计  

WIND TURBINE BLADE LENGTH DESIGN BASED ON ECONOMIC EVALUATION INDICATORS

作　　者：吴江海[1] 王同光[1] 王珑[1] 赵宁[1] Wu Jianghai;Wang Tongguang;Wang Long;Zhao Ning(Jiangsu Key Laboratory of Hi-Tech Research for Wind Turbine Design,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China)

机构地区：[1]南京航空航天大学,江苏省风力机设计高技术研究重点实验室,南京210016

出　　处：《太阳能学报》2020年第12期324-329,共6页Acta Energiae Solaris Sinica

基　　金：国家国家重点基础研究发展(973)计划(2014CB046200);国家自然科学基金(51506089;51506088)。

摘　　要：基于风力机一体化设计框架开展2.5 MW低风速风力机叶片长度优化。采用风场生命周期内的度电成本和收益净现值等工程经济学评价指标作为设计目标,分别得到对应不同经济性指标的最佳叶片长度。结果表明,度电成本最优的设计趋向于使机组投资和发电量之间的比值最小化,收益净现值最优设计则使机组总收益与总成本之差最大化。以这2种经济学评价指标为目标开展设计能够得到叶片长度的最佳设计区间,叶片长度在此区间外机组的经济性较低。该文还进一步分析叶片长度对塔架高度设计的影响。The blade length of a 2.5 MW low wind speed turbine is optimized base on an integrated wind turbine design framework. By calculating and using engineering economic evaluation indicators such as levelized cost of energy(LCoE),net present value(NPV)as the design objectives,the optimal blade lengths for different economic indicators are obtained.The results show that the optimal LCoE design leads to the minimum ratio of capital expenditure to energy production.Meanwhile,the optimal NPV design results in the maximum difference between total incomes and total costs. These two economic indicators provide the optimal design interval of blade length. They give the minimum blade length and the maximum blade length with good engineering economic evaluation indicators. The economic efficiency of the wind turbine decreases when the blade length is beyond this scope. In addition,the effect of blade length on tower height design is also analyzed.

关 键 词：风力机 优化设计 经济学分析 叶片长度 LCoE 

分 类 号：TM614[电气工程—电力系统及自动化]