Research Of Motion Response On Transport Of Integrated Offshore Wind Turbine By Barge

In the context of global warming and the depletion of traditional,non-renewable mineral resources,research and development of new energy sources has become a top priority in today’s world.Wind energy is a renewable and clean energy,in China energy strategic goals have an irreplaceable role,therefore,China is vigorously supporting and developing the wind power industry,offshore wind energy irreplaceable advantages,so that the construction of offshore wind farms is increasingly prosperous,units are becoming more and more large,the traditional split transportation method is increasingly unable to meet the construction speed of wind power plants,so the overall transportation of wind turbines has become a solution,the use of barges to transport the wind turbine will greatly reduce the installation cost,shorten the wind farm construction cycle.The transportation of wind turbines during the transportation of barges is a key and difficult point in construction organization design,and how to ensure the safety of transportation is the first problem to be solved.Based on Workbench AQWA software,this thesis numerically simulates the transportation process of barge-borne integrated wind turbines,and calculates them with examples.In this thesis,two 5MW wind turbines carried by self-propelled barges are selected as the research objects,DM is used to establish the model,the barge parameters are calculated through the barge loading manual for model verification,the total design and structural design are completed,the empirical formula and ANSYS-static structural are used to calculate the floating moment of inertia,the meshing accuracy is verified by convergence experiment,and the hydrostatic report of the hydrodynamic model is calculated to verify the accuracy of the model.Through the software hydrodynamic module,the additional mass and radiation damping of the integrated model of barge-borne wind turbine are calculated,and the change curve of additional mass and radiation damping with wave period is obtained,and it is concluded that the longer the wave period,the lower frequency response of both of them.By analyzing the hydrodynamic characteristics of the barge in the frequency domain under different wave angle,speed and water depth conditions,it is concluded that the wave angle has a great influence on the motion response of the six degrees of freedom,followed by the speed,and the water depth has a small influence on the motion response of the six degrees of freedom.The results show that under the combined action of wind,wave and current at different angles,the roll,pitch and vertical of the floating body will change,and the rollover is the largest when the lateral environmental load is received,and the pitch angle is the largest when the bow aft direction is subjected to environmental load,and the vertical angle is basically the same as that of the horizontal rock,and the heading angle of the barge transport integrated wind turbine is suggested.Finally,taking the South Wind Farm of Shandong Peninsula as an example to carry out the time-domain coupling calculation,combined with the actual environmental conditions of the wind farm,the environmental situation is set as Sea State 3 and Sea State 4,and the time-domain coupling analysis of the wind farm is carried out according to the route information,and through simulation calculation,it is judged that the heading angle needs to be adjusted to meet the safety conditions of transportation operations when the sea State 4 is present.