Site measurement is essential to the meteorological and oceanographic parameters of offshore wind farms. A floating lidar system was deployed at offshore wind farm at Guangdong coast. The lidar wind data is compared and calibrated with offshore meteorological mast for three months, the correlation coefficient R2 over 0.98 and the mean relative errors (MREs) less than 7%. The average absolute deviations of mean wind speed and wind direction are less than 0.5 m/s and 3°, respectively. In this study, all these data are used to recalibrate for the met-ocean model to relies extreme conditions, such as Typhoon Kompasu (2118) and Typhoon Chaba (2203) in recent years. A case study is presented in this paper to demonstrate the importance for the extreme met-ocean conditions for the offshore wind turbines.
Wind energy, as a clean and pollution-free green energy source, is an important part of China's energy structure. With its vast territory, China has abundant wind energy resources, and the wind power industry has rapidly developed over the past decade. Compared to onshore wind power, offshore wind power has the advantages of large reserves, high utilization efficiency, no land occupation, and environmental friendliness, and is expected to become the main force in the future wind power industry (Xu., 2021; Yi et al., 2021; Wang et al.,). In the development process of offshore wind power, wind resource assessment is the first step in the site selection of wind farms, and the accuracy of wind resource assessment is crucial to ensuring the economic benefits of wind farm development and operation (Zhang., 2009). Currently, building fixed wind measurement towers within the development sea area of wind farms is a conventional method for collecting meteorological elements and conducting wind resource assessment (Li et al. 2016; Courteney 2016), but the construction of offshore wind measurement towers faces issues such as cumbersome procedures, high costs, and difficult construction (Wang et al., 2020), and as offshore wind power moves from shallow to deep sea, the construction costs and technical difficulties of offshore wind measurement towers are bound to further increase (Cui et al., 2019).
