Annual and seasonal variabilities in the performances of wave energy converters
Annual and seasonal variabilities in the performances of wave energy converters
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DOI：
10.1016/j.energy.2018.10.001
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发表时间：
2018-12
期刊：
影响因子：
9
通讯作者：
N. Guillou;G. Chapalain
中科院分区：
文献类型：
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作者：
N. Guillou;G. Chapalain
大多数情况下，波能转换器(WEC)的位置是在平均波功率密度最高的地区确定的，而忽略了资源的时间变异性。然而，能量最旺盛的地区的特点是波能的年间和年内变化很大，这可能会影响设备的能量生产和性能。我们通过关注三个达到全程测试阶段的著名WEC的发电情况来研究这些影响：Pelamis、AquaBuOy和Wave Dragon。这项评估是在布列塔尼西部进行的，布列塔尼是法国沿海最具活力的地区之一。与现有资源相比，技术发电量的特点是年度和季节变化减少。这些影响对Pelamis人尤其明显，因为Pelamis人在冬季和夏季之间的能量输出间歇性减少。能量最高的条件对设备功率输出的贡献也是有限的，主要与能量周期在10.5到12.5 S之间，显著波高在2.75到4.25m之间的事件有关。WECS的性能表现出很强的变异性，在冬季，WECS的容量因子的月平均值高达65%。
Locations of wave energy converters (WECs) are, most of the time, determined in areas with the highest density of mean wave power while ignoring the temporal variabilities of the resource. The most energetic regions are, however, characterised by strong inter-and intra-annual variations of wave power that may impact the energy production and performances of devices. We investigated these influences by focusing on the generated power from three well-known WECs that reached the stage of full-stage testing: Pelamis, AquaBuOY and Wave Dragon. This evaluation was conducted in western Brittany, one of the most energetic area along the coast of France. In comparison with the available resource, the generated technical power was characterised by reduced annual and seasonal variations. These effects were particularly noticeable for Pelamis that exhibited a reduced intermittency in the energy output between the winter and summer periods. The most energetic conditions had furthermore a restricted contribution to devices power output, mainly related to events with energy periods between 10.5 and 12.5 s, and significant wave heights between 2.75 and 4.25 m. WECs performances exhibited finally strong variabilities, in winter, with monthly-averaged values of the capacity factor up to 65% for Wave Dragon.