Assessment of tidal current energy resources in the significant waterways of Zhoushan sea area

CHEN Chao; BAO Min; YE Qin; YAN Yuhan; CAO Zhenyi; ZHANG Qianjiang

doi:10.3969/j.issn.1001-909X.2023.03.004

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Journal of Marine Sciences ›› 2023, Vol. 41 ›› Issue (3) : 34-42. DOI: 10.3969/j.issn.1001-909X.2023.03.004

Assessment of tidal current energy resources in the significant waterways of Zhoushan sea area

CHEN Chao ¹^,² ,
BAO Min ¹^,²^,^* ,
YE Qin ²^,³^,⁴ ,
YAN Yuhan ⁵ ,
CAO Zhenyi ¹^,² ,
ZHANG Qianjiang ¹^,²

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Abstract

Tidal current energy is the kinetic energy carried in the horizontal movement of tidal water, which has great development prospects. Accurate simulation and characterization of regional tidal currents can help to efficiently evaluate the spatial and temporal distribution of tidal energy resources, which is the key to the development and utilization of tidal current energy resources. In this paper, a high-resolution numerical model of tidal currents is constructed by applying FVCOM ocean model in Zhoushan sea area where has rich tidal current energy, and the reliability of the model is confirmed by tidal level and current verification. According to the simulation results, six waterways with dense tidal current energy resources in the Zhoushan sea area were identified, among which the average energy density of Xihoumen waterway, Cezi waterway and Taohuagang waterway exceeds 2.0 kW/m², and the maximum energy density exceeds 20 kW/m², and the flow speed over 1.0 m/s of the whole month is more than 80%. During tidal current ebb and flow, the reflow is dominant, while the asymmetry and rotation of tidal current are low. The flow stability coefficient is more than 0.98, so it is more suitable for the development and utilization of tidal current energy than other three waterways. The best location for tidal current energy development in these three waterways was then determined by calculating the significant hours and available hours, and the corresponding exploitable tidal current energy resources were evaluated using the Farm method, which were 27.53 MW, 39.96 MW, and 130.26 MW, respectively.

Key words

FVCOM / Zhoushan / tidal current energy / Farm method

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CHEN Chao , BAO Min , YE Qin , et al . Assessment of tidal current energy resources in the significant waterways of Zhoushan sea area[J]. Journal of Marine Sciences. 2023, 41(3): 34-42 https://doi.org/10.3969/j.issn.1001-909X.2023.03.004

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