Modeling assessment of tidal current energy in the Qiongzhou Strait, China

WU He; YU Huaming; DING Jie; YUAN Dekui

doi:10.1007/s13131-016-0792-2

琼州海峡潮流能资源的数值模拟评估

doi: 10.1007/s13131-016-0792-2

1.
天津大学力学系天津 300350;国家海洋技术中心天津 300112
2.
中国海洋大学物理海洋教育部重点实验室青岛 266100
3.
国家海洋技术中心天津 300112
4.
天津大学力学系天津 300350

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- 收稿日期: 2014-08-26
- 修回日期: 2014-11-13

Modeling assessment of tidal current energy in the Qiongzhou Strait, China

1.
Department of Mechanics, Tianjin University, Tianjin 300350, China;National Ocean Technology Center, Tianjin 300112, China
2.
Physical Oceanography Laboratory of the Ministry of Education, Ocean University of China, Qingdao 266100, China
3.
National Ocean Technology Center, Tianjin 300112, China
4.
Department of Mechanics, Tianjin University, Tianjin 300350, China

摘要

摘要: 近年来,我国能源消耗量不断的增长使我们更加重视可再生能源的开发利用,而我国近海拥有复杂的海岸线和广阔的大陆架,其中许多海域蕴藏着丰富的潮流能资源。潮流能资源评估则是其电站站址选择、发电量预测等工程设计的首要工作。结合两个站位的潮流实测数据,本文利用FVCOM海洋环流数值模式较好的模拟了琼州海峡潮波传播状况,分析了该海域潮流能资源水平分布规律和时间变化特征,初步估算了该水道的潮流能的理论蕴藏量,并采用FLUX方法对该水道的技术可开发量进行了评估。结果表明,琼州海峡中心海域功率密度高,两岸资源低;可能最大流速、大潮年平均最大功率密度、小潮年平均功率密度和年平均功率密度等特征值分布基本相似;其丰富区域出现在海峡东口南部海域以及海峡中部海域,其中东口南部海域可能最大流速可达4.6 m/s,表层流大潮年平均最大功率密度为5996 W/m²,小潮平均最大功率密度仅为467 W/m²,年平均功率密度为819 W/m²,代表点超过0.7 m/s的潮流流速年统计时间约为4717 h;海峡潮流能资源理论蕴藏量为189.55MW,利用FLUX、FARM、GC方法得到该水道的潮流能可开发量分别为249GW/yr、20.2GW/yr和263GW/yr。
- 潮流能 /
- 数值模拟 /
- 功率密度 /
- 琼州海峡
Abstract: In the present study, an existing three-dimensional finite volume computational ocean model (FVCOM) was refined and configured including an algorithm for computing the power density and mean power density at Qiongzhou Strait of China. The refined model was validated with the measured tidal levels and tidal currents at different gauging stations. The model results are in reasonable agreement with the measured data. Based on the modeling results, we assess the resource of the tidal stream energy in the Qiongzhou Strait and discuss the temporal and the spatial distribution of the tidal current energy there. The conclusion is extracted: the higher power density occurs in the middle area of the strait, and lower at both sides. Characteristics of power density such as the maximum possibility speed, maximum power density during the spring tide period and the neap tide period, have the similar distribution. The southeast part and central area of the strait are of rich tidal current energy, where the maximum possibility speed can reach to 4.6 m/s, and the maximum power density of the spring tide period and the neap tide period can reach 5 996 and 467 W/m² separately in the surface layer The annual mean power density can reach 819 W/m². Statistical length of accumulative time of the velocity exceeding 0.7 m/s is about 4 717 h at local point during a year. The total theoretical tidal current energy resource is approximately 189.55 MW and the available exploited energy on present technology condition is 249, 20.2 and 263 GW/a separately by using the methods FLUX, FARM and GC in the Qiongzhou Strait.
- tidal current energy /
- numerical model /
- power density /
- Qiongzhou Strait

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参考文献(29)

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文章访问数: 1249
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琼州海峡潮流能资源的数值模拟评估

doi: 10.1007/s13131-016-0792-2

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Modeling assessment of tidal current energy in the Qiongzhou Strait, China

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