永兴岛能源现状及波浪能资源初步评估
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摘要
对永兴岛能源供给现状及存在的问题进行了分析,并采用TOMAWAC波浪模型对永兴岛附近海域的波浪条件和波浪能分布规律进行分析。结果表明,永兴岛现有供能方案不能满足其发展需要,开发波浪能潜力巨大。永兴岛附近海域的波浪呈现明显的季节性分布,冬季的有效波高、平均周期和波能流密度都较大,而夏季则较小。从波向上来看,永兴岛附近海域常浪向为NE～ENE,在20年波浪资料中占比53. 8%。波能流密度20年均值为14. 6k W/m,约有75%的时间波能流密度大于2 k W/m,约有15%的时间波能流密度大于20 k W/m。
The energy status of Yongxing Island and existing problems are investigated, and the wave model TOMAWAC is employed to simulate the wave field and assess the wave energy resources around Yongxing Island. The investigations indicate that,( a) present power supply scheme cannot satisfy the needs for further development and the utilization of wave energy is promising;( b) the wave resources in this area has significant seasonal variation, the significant wave height, mean wave period and wave energy flux are higher in winter and lower in summer; and( c) the main direction of water waves is NE-ENE accounting for 53. 8 % in 20 year data, the estimated 20-year average wave energy flux is 14. 6 k W/m, and the wave energy flux in 75% of the time is higher than 2 k W/m and higher than 20 k W/m in 15% of the time.
The energy status of Yongxing Island and existing problems are investigated, and the wave model TOMAWAC is employed to simulate the wave field and assess the wave energy resources around Yongxing Island. The investigations indicate that,( a) present power supply scheme cannot satisfy the needs for further development and the utilization of wave energy is promising;( b) the wave resources in this area has significant seasonal variation, the significant wave height, mean wave period and wave energy flux are higher in winter and lower in summer; and( c) the main direction of water waves is NE-ENE accounting for 53. 8 % in 20 year data, the estimated 20-year average wave energy flux is 14. 6 k W/m, and the wave energy flux in 75% of the time is higher than 2 k W/m and higher than 20 k W/m in 15% of the time.
引文
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[2]郑崇伟,李训强.基于WAVEWATCH-Ⅲ模式的近22年中国海波浪能资源评估[J].中国海洋大学学报:自然科学版,2011,41(11):5-12.
[3] MEI C C. The applied dynamics of ocean surface waves[M]. NewYork:Wiley,740.
[4] SHI Jian, ANTONIE J, ZHENG Jinhai, et al. Development of a sea-state database in the northwest pacific ocean by long-term numericalhindcast modelling[C]∥Proceedings of the 25th International Confer-ence on Nuclear Engineering, Shanghai, China:American Society ofMechanical Engineers, 2017:V004T14A008.
[5] Hagerman G, Bedard R. Guidelines for preliminary estimation of pow-er production by offshore wave energy conversion devices[R]. Elec-tric Power Research Institute(EPRI),2003.