Research On Wind Resources Assessment Method Based On Meteorological Factors

With the increasing reduction of global fossil energy,wind energy which is one of the renewable clean energy sources,has gradually entered the public’s vision.In the initial stage of wind farm construction,wind speed is one of the key factors in wind resource assessment.Wind speed is affected by many factors,among which meteorological factors have a direct impact on wind speed.This paper presents a weighted correction method based on correlation analysis and regression analysis to study the influence of the main meteorological factors on wind speed.This paper choose two regions with large climate differences to verify the correctness of the proposed method and its adaptability to different climatic regions.Firstly,this thesis gathers wind speed data and meteorological data from Xinjiang and Shanghai,then observes the wind speed changing trend with each meteorological factor directly through four seasonal data break-line chart and simple data analysis,and obtains the general situation of each meteorological factor influencing wind speed under different climatic characteristics;secondly,it carries on the meteorological factor shadow to wind speed based on intuitive analysis.The paper select three main meteorological factors: temperature,humidity and air pressure as independent variables,and select wind speed as dependent variables to study the relationship between them.Through correlation analysis,the most suitable mathematical regression model describing wind speed and its influencing factors will be obtained;through regression analysis,the linear regression model will be adopted and a linear regression model with higher fitting accuracy and smaller error is obtained by using the factors that influence meteorological factors as weighted variables.The paper choose Shanghai and Xinjiang as artificial areas and analysis the relationship between wind speed and meteorological factors in this two areas to verify the correction and the adaptability of proposed method.We can get experimental results which accords with local situation to analysis the relationship between wind speed and meteorological factors by using the proposed method which verify the correctness and adaptability of this method.It has been verified that the method has good adaptability in different climatic regions according to the experimental results of the two areas.The method which is proposed in this paper provides a new idea for studying the relationship between wind speed and its influencing factors in different climatic regions in the future,and also provides a new possibility for wind resource assessment methods in different climatic regions.