Offshore wind power construction is difficult and with high risk. It is extremely difficult to control the cost, of which the construction period is the biggest variable. Firstly, as to adapt to the requirements of cost reduction and efficiency increase in the coming era of flat rate, focused on the offshore seas from the southern Shandong Peninsula to Guangxi, this paper compares the quality of ERA5, CCMPv2 and NCEP reanalysis wind fields based on measured data. Secondly, this paper modifies a SWAN wave model adaptively to perform a numerical simulation with a time span of 25 years（1996-2020）. Utilizing the results of 1-hour hindcast wind and wave data,the weather window and construction efficiency for the pile foundation and upper set of offshore wind turbine are evaluated both on spatial and temporal scope. With respects to the key locations for China offshore wind power development, some construction suggestions are also made. The results indicate that wind data from ERA5 is in best agreement with observations. The accuracy of simulated wave parameters has been improved after the calibration of SWAN model. Besides, workloads of foundation construction and wind turbine installation have significant temporal and spatial variation characteristics in the studied area.
Key words
renewable energy /
offshore wind farm /
construction /
China seas /
SWAN /
weather window
{{custom_sec.title}}
{{custom_sec.title}}
{{custom_sec.content}}
References
[1] 武魏楠. 谢长军:建议海上风电“三步走”2025年底实现平价[J]. 能源, 2021(1): 10-13.
WU W N. Xie Changjun proposed that wind power connected to grid at an equal price can be achieved in the “three-step” strategy by the end of2025[J]. Energy, 2021(1): 10-13.
[2] 时智勇, 王彩霞, 李琼慧. “十四五”中国海上风电发展关键问题[J]. 中国电力, 2020, 53(7): 8-17.
SHI Z Y, WANG C X, LI Q H.Key issues of China’s offshore wind power development in the “14th Five-Year Plan”[J]. Electric power, 2020, 53(7): 8-17.
[3] 刘晋超. 海上风电施工窗口期对施工的重要性[J]. 南方能源建设, 2019, 6(2): 16-18.
LIU J C.Importance of window phase for offshore wind power construction[J]. Southern energy construction, 2019, 6(2): 16-18.
[4] 袁汝华, 黄海龙, 孙道青, 等. 海上风电风机基础结构形式及安装技术研究[J]. 能源与节能, 2018(12): 59-61.
YUAN R H, HUANG H L, SUN D Q, et al.Research on basic structure and installation technology of offshore wind turbine[J]. Energy and energy conservation, 2018(12): 59-61.
[5] 黄俊. 海上风电基础特点及中国海域的适用性分析[J].风能, 2020(2): 36-40.
HUANG J.Analysis of the characteristic of offshore wind turbine foundations and applicability in China sea area[J]. Wind energy, 2020(2): 36-40.
[6] 王爱国, 杨泽敏, 胡宗邱. 浅谈海上风力发电机组安装技术[J]. 水电与新能源, 2019, 33(11):65-70.
WANG A G, YANG Z M, HU Z Q.Installation technology of offshore wind turbine units[J]. Hydropower and new energy, 2019, 33(11): 65-70.
[7] JIANG Z Y.Installation of offshore wind turbines: a technical review[J]. Renewable and sustainable energy reviews, 2021, 139: 110576.
[8] The SWAN Team.SWAN scientific and technical documentation, SWAN Cycle Ⅲ Version 41.31 A[M]. Delft: Delft University of Technology, 2020.
[9] LI X M, HUANG B Q.A global sea state dataset from spaceborne synthetic aperture radar wave mode data[J]. Scientific data, 2020, 7(1): 261.
PDF(36205 KB)
