The importance of accurate wind resource assessment for evaluating the economic viability of small wind turbines

The importance of accurate wind resource assessment for evaluating the economic viability of small wind turbines
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准确的风资源评估对于评估小型风力发电机的经济可行性的重要性

DOI:
10.1016/j.renene.2014.12.032
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发表时间:
2015
期刊:
影响因子:
8.7
通讯作者:
Drew D
Drew D
中科院分区:
工程技术1区
文献类型:
--
作者:
Drew D

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小型风力发电机组的技术经济性能对可用风力资源非常敏感。然而,由于资金和实际限制,安装人员依赖于低分辨率的风速数据库来评估潜在的地点。本研究调查了英国目前使用的两种现场评估工具,NOABL或节能信托风速估计器,是否足够准确地估计小型风力涡轮机的技术经济性能。这两种工具都倾向于高估风速,NOABL和节能信托工具的平均误差分别为23%和18%。对每个地点的33个小型风力涡轮机进行的技术经济评估表明,这些误差可能对装置的估计负载系数产生重大影响。因此,在经济上不可行的场址/涡轮机组合可以预测为可行的。此外,两种模型都倾向于低估风速相对较高地点的风力资源,这可能会导致错失机会,因为经济上可行的涡轮机/场地组合被预测为不可用。这些结果表明,要使小型风力涡轮机在英国成为可行的技术,需要更好地了解当地的风力资源。
The techno-economic performance of a small wind turbine is very sensitive to the available wind resource. However, due to financial and practical constraints installers rely on low resolution wind speed databases to assess a potential site. This study investigates whether the two site assessment tools currently used in the UK, NOABL or the Energy Saving Trust wind speed estimator, are accurate enough to estimate the techno-economic performance of a small wind turbine. Both the tools tend to overestimate the wind speed, with a mean error of 23% and 18% for the NOABL and Energy Saving Trust tool respectively. A techno-economic assessment of 33 small wind turbines at each site has shown that these errors can have a significant impact on the estimated load factor of an installation. Consequently, site/turbine combinations which are not economically viable can be predicted to be viable. Furthermore, both models tend to underestimate the wind resource at relatively high wind speed sites, this can lead to missed opportunities as economically viable turbine/site combinations are predicted to be non-viable. These results show that a better understanding of the local wind resource is a required to make small wind turbines a viable technology in the UK.
城市风力发电机分析工具
DOI: --
发表时间: 2011
期刊:
影响因子: --
作者:
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