On the wave energy potential along the eastern Baltic Sea coast
On the wave energy potential along the eastern Baltic Sea coast
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DOI：
10.1016/j.renene.2014.05.025
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发表时间：
2014-11
期刊：
影响因子：
8.7
通讯作者：
T. Soomere;M. Eelsalu
中科院分区：
文献类型：
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作者：
T. Soomere;M. Eelsalu
本文以波罗的海为例，从理论和实践上分析了中等深度、波浪气候相对严重但间歇性强的半遮蔽陆架海的波浪能资源。利用第三代波浪模型WAM，以3海里（5.5公里）的空间分辨率和1小时的时间分辨率，对1970-2007年整个波罗的海东部海岸（从萨姆兰半岛到芬兰湾东部）的波浪特性进行了数值重建。由于海面较浅（平均54米），有限深度色散关系用于近岸波浪能资源的估计，在7-48米的深度，WAM模式提供了足够的结果。38年来，波罗的海东部近岸地区的平均波浪能通量（波能）约为1.5千瓦/米（在选定的地点高达2.55千瓦/米），但芬兰湾和里加湾内陆的平均波浪能通量要小得多，约为0.7千瓦/米。整个研究区理论波浪能资源量约为1.5 GW。现有和拟议的海洋保护区将可用的波浪能资源限制在约840兆瓦。由于波浪特性的高间歇性和强烈的季节变化以及海冰的频繁存在，网格能量的产生是复杂的。虽然波浪能资源在某些地方很有吸引力，但它们为电网供电的用途是有问题的，而且在可想象的未来可能是不可行的。
We analyse the wave energy resource theoretically and practically available in a semi-sheltered shelf sea of moderate depth and with relatively severe but highly intermittent wave climate on the example of the Baltic Sea. The wave properties along the entire eastern Baltic Sea coast, from the Sambian (Samland) Peninsula to the eastern Gulf of Finland, are reconstructed numerically for 1970–2007 with a spatial resolution of 3 nautical miles (5.5 km) and temporal resolution of 1 h using the third generation wave model WAM. Owing to the shallowness of the sea (54 m on average) the finite-depth dispersion relation is used in the estimates of the wave energy resources in the nearshore, at depths of 7–48 m where the WAM model provides adequate results. The average wave energy flux (wave power) over the 38 years in question is about 1.5 kW/m (at selected locations up to 2.55 kW/m) in the nearshore regions of the eastern Baltic Proper but much smaller, about 0.7 kW/m, in the interior of the Gulf of Finland and the Gulf of Riga. The total theoretical wave energy resource in the entire study area is about 1.5 GW. The existing and proposed marine protected areas limit the available wave energy resource down to ∼840 MW. The production of grid energy is complicated because of extremely high intermittency and strong seasonal variation of the wave properties and frequent presence of sea ice. Although the wave energy resources are of obvious interest at some locations, their use for supplying power into the grid is questionable and probably not feasible in the conceivable future.