Impact of tidal turbine support structures on realizable turbine farm power
Impact of tidal turbine support structures on realizable turbine farm power
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潮汐涡轮机支撑结构对可实现涡轮机发电场功率的影响
DOI：
10.1016/j.renene.2017.07.002
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发表时间：
2017
期刊：
影响因子：
8.7
通讯作者：
R. Willden
中科院分区：
文献类型：
--
作者：
S. Muchala;R. Willden
采用一维水头驱动渠道流模型来研究部署在潮汐渠道中的大型潮汐发电场的潮汐流能量提取特征，特别关注由于涡轮机支撑结构阻力和体积流量减少的限制而对可实现的发电场功率的限制。支撑结构被认为对通道中的总阻力有显着影响，因此降低了通过通道的总流速，导致可实现功率的损失。在广泛的通道特性中，支撑结构阻力的实际水平被证明会导致可实现功率减少高达 40%，并且可安装的涡轮机数量也会相应减少。将允许的流量降低限制在 10% 使得结构阻力变得更加重要，相对于没有支撑结构阻力的情况，可实现功率降低高达 70%，相对于没有流量降低限制和没有支撑结构阻力的情况，可实现功率降低 80% 以上。对于结构阻力和允许流量减少的实际水平，农场电力输出在未受干扰的峰值河道流速（或潮汐幅度）中近似呈线性，这与在没有流量减少限制和没有结构阻力的河道中观察到的二次行为相反。
A one-dimensional head driven channel flow model is used to investigate the characteristics of tidal stream energy extraction for large tidal farms deployed in tidal channels with specific focus on the limitations to realizable farm power due to turbine support structure drag and constraints on volume flow rate reduction. Support structures are seen to contribute significantly to the overall resistive force in the channel and thus reduce the overall flow rates through the channel leading to losses in realizable power. Over a wide range of channel characteristics, realistic levels of support structure drag are shown to lead to up to a 40% reduction in realizable power, and an associated reduction in the number of turbines that can be installed. Constraining the permissible flow rate reduction to 10% renders the structural drag to be even more important, reducing realizable power by up to 70% relative to the case without support structure drag and by over 80% relative to the case with no constraints on flow rate reduction and no support structure drag. For realistic levels of structural drag and permissible flow rate reduction, farm power output is seen to be approximately linear in undisturbed peak channel flow speed (or tidal amplitude), as opposed to the quadratic behaviour observed for channels with no constraint on flow rate reduction and no structural drag.
影响因子：
3.6
作者：
A. Olczak;T. Stallard;T. Feng;P. Stansby
通讯作者：
A. Olczak;T. Stallard;T. Feng;P. Stansby
影响因子：
3.7
作者：
Mathis, Romain;Marusic, Ivan;Hutchins, Nicholas
通讯作者：
Hutchins, Nicholas