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利用近20年ERA-Interim再分析资料提供的海浪场数据研究东海、南海近海和近岸(4个波能富集区)波浪能资源的分布状况。研究表明:波功率密度大值区位于南海中北部、吕宋海峡、琉球群岛附近、台湾和菲律宾东部海域,Pw约为14~18 k W/m,波能资源秋冬季大,春夏季小;波能丰富且稳定的区域位于东海、南海北部近岸海域、台湾东部海域;南海年总波能量高于东海,越接近外海,年总波能量越大。近岸波能富集区波功率指向性好,波功率方向集中,有利于获得最大吸能效率;极值波功率最大可达330 k W/m,对总波能密度有突出贡献的波况大致相同,Hs为0.5~4.0 m,Te为4~9 s,该波况范围的能量约占总能量的90.0%以上。所得结果可为波能电站的选址及波能装置的设计提供参考。
The distribution of wave energy resources in the East China Sea, the offshore South China Sea and the nearshore (4 wave energy-rich regions) was studied using the data of the sea wave field provided by the ERA-Interim reanalysis data in the past 20 years. The results show that the large power density region is located in the middle and northern part of the South China Sea, the Luzon Strait, the Ryukyu Islands, Taiwan and the eastern Philippine Sea. The Pw is about 14 ~ 18 kw / m. The regions of rich and stable wave energy are located in the coastal areas of the East China Sea, the northern coast of the South China Sea and the eastern Taiwan Sea. The total energy of the South China Sea is higher than that of the East China Sea. The wave power of the near-shore wave-energy-rich region has good directional directivity and concentrated wave power direction, which is beneficial to obtain the maximum energy-absorbing efficiency. The maximum power of extreme wave is up to 330 k W / m, which greatly contributes to the total wave energy density Hs is 0.5-4.0 m and Te is 4-9 s. The energy in this wave regime is about 90.0% of the total energy. The results can provide a reference for the site selection of wave power station and the design of wave energy devices.