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Assessment of China’s Offshore Wave Energy Resources Based on the High-Resolution Numerical Simulation Technology
Pages: 117-121
Year: Issue:  4
Journal: Ocean Technology

Keyword:  SWANwave energywave power densitysignificant intervalZhejiang Province;
Abstract: In this paper, the SWAN model is adopted to conduct a 10-year high-resolution wave numerical simulation for the sea area off the central region of the Zhejiang Province, thus obtaining the density distribution of annual mean wave power and discussing the significant interval distribution of wave energy in this sea area.The statistical stability of distribution is examined through the statistical analysis of the coefficient of variation(COV) of wave power. The potential wave energy reserves in this sea area are estimated to be around 0.91 ×106kW. In coastal waters, wave energy is deficient in shallow waters and wave power density is usually above 2 kW/m in waters deeper than 10 m, with its contour line parallel with the coastline. Wave energy is abundant around the islands far from the mainland, resulting in obvious advantages in the preliminary stage of wave power exploration. The significant interval of wave power is about 1 500 h in shallow waters and is approximately 4 000 h around the Yushan islands which are far from the mainland. The COV is about 2 to 3 in most offshore waters.
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