Based On Wind Speed Data Over Nanao To Study On Coastal Wind Field Construction And Typhoon Pulsation Characteristics

My country's wind resources in coastal areas are rich and are suitable for the development of the wind power industry.The wind characteristics of different regions will be different,which will have an impact on the establishment of wind farms and the calculation of wind turbine load.This article analyzes some wind speed characteristics in South Australia.my country is also the area that suffers the most typhoons.Statistics on the distribution characteristics of typhoons that have landed in my country in recent years will be helpful in the selection of wind farms.In addition,coastal or offshore wind turbines will inevitably be affected by typhoons.This article studies the pulsating wind frequency characteristics of typhoons.And the fitting of its power spectrum,which prepares for the future research of offshore wind power.In order to study the development of wind turbines in the southeast coastal area,it is necessary to study the characteristics of wind speed.This article analyzes seasonal differences in wind speed,weather differences and day and night differences based on historical data from Nanao.Through the comparative analysis of different power spectra,the velocity spectra that have a better fitting effect with the actual pulsating wind frequency are found.This article introduces the turbulent wind field model,the classical spectrum estimation method,the commonly used horizontal fluctuating wind speed spectrum,transverse fluctuating wind speed spectrum,vertical fluctuating wind speed spectrum and some typhoon spectra.Mathematical derivation and matlab modeling of the commonly used wind field simulation methods such as AR model,harmonic superposition method and inverse Fourier transform method are carried out.The fourth chapter introduces the distribution and grade of tropical cyclones,and then analyzes the list of landed tropical cyclones provided by the Tropical Cyclone Data Center of the Meteorological Bureau,and analyzes the number of typhoons that landed in my country since1949.The occurrence of strong typhoons Statistics of the number of typhoons that landed on the roads and the number of typhoons that landed in Guangdong in different regions of China in that year.In this paper,the typhoon-related characteristics are compared by comparing the pulsating wind speed spectrum and empirical spectrum of typhoon samples.In addition,Davenport fitting,Kaimal fitting and Karman fitting are carried out in the form of wind spectrum fitting function through the principle of least squares fitting.Each typhoon sample has a mathematical model of power spectrum,which is of great significance for the later research on the influence of typhoon on offshore wind turbine.The research in this article provides a basis for the assessment of wind resources in eastern Guangdong and the structural design of small and medium-sized wind turbines.In addition,it provides a basis for the structural design and load analysis of offshore wind turbines.