Wind Power Industry Patent Technology Research And Development Overview,research And Development Hot Spots And Evolution Path Research

With the increasing severity of global energy resources and environmental issues,alleviating the energy crisis and developing clean energy have become important measures in the energy strategies of countries around the world.Wind energy has the characteristics of wide distribution and no pollution.Therefore,wind power generation has become an important choice for energy development in countries around the world.China's wind energy resources are very rich,but China's wind energy development and utilization time is relatively short,lack of experience,facing very severe technical pressure,and severely curb the rapid development of China's wind power industry.To this end,from the perspective of patent analysis of China's wind power industry technology development overview,while analyzing the international wind power industry hot technology areas,technology evolution,etc.,can provide a valuable reference for China's wind power industry technology development.First,the statistical analysis method is used to analyze the time trend of China's wind power industry patent technology and the status of applicants.It is found that foreign companies' patent applications in China occupy the absolute advantage of China's wind power industry patent applications;applying technology life cycle theory to draw China's wind power industry technology Life cycle curve,found that China's wind power industry is in a recovery period;using spatial autocorrelation analysis method to analyze the distribution of effective patent provinces and cities in China's wind power industry,analyze the spatial autocorrelation of effective invention patents,and find that China's wind power industry's effective inventionpatents appear The more obvious positive spatial autocorrelation characteristics.Secondly,based on the international patent classification number and Derwent hand code,the technical co-occurrence analysis method is used to draw the patent technology co-occurrence map,to analyze the hot technology fields of the international wind power industry,and find that the hot technology fields of the international wind power industry have wind turbine technology Field,wind power generation control equipment field,multi-source system interconnection power transmission field,wind power generation windmill blade field,etc.Finally,the core patents of the international wind power industry are analyzed from the perspective of patent quality.Explore the core patents of the international wind power industry from the perspective of the main path of patent citations,and sort out the technical evolution of the international wind power industry;in order to ensure the accuracy and value of the international wind power industry technology evolution path,combined with the patent strength index,the evolution path patent quality The evaluation found that the evolutionary path of patent technology in the international wind power industry based on patent citation analysis is of high quality,and at the same time found that the number of core patents in the Chinese wind power industry is seriously insufficient.