Research On Installation Monitoring Technology Of Large Offshore Wind Turbine

With the massive consumption of non-renewable energy sources,people are eagerly seeking alternative energy sources.As a new energy source,offshore wind energy has been vigorously developed in recent years.Offshore wind turbines,as power generation devices for offshore wind energy,are in a stage of rapid development.At the same time,in order to increase the generating power of offshore wind turbines,the design of offshore wind turbines tends to be larger.Because of the increasing height and weight of offshore wind turbines,lifting installation technology at this stage is increasingly unable to adapt to the development progress of offshore wind turbines.As a new installation method for offshore structures,the floating method has the advantages of low cost,short time,no restriction of lifting height and large lifting capacity.It has been widely used in the installation process of the upper block of the oil platform.To this end,this article applies the floating method of offshore wind turbines,and proposes a large offshore wind turbine floating support installation method.Facing monitoring technology of the floating installation,it analyzes the potential failure modes,criteria and monitoring elements during the installation process.This article first introduces the three processes of offshore wind turbine floating support installation technology in detail: dock loading technology,marine transportation and offshore site installation.The floating installation technology of offshore wind turbine is a brand new technology.In the introduction of the installation process,it is proposed that in order to ensure the safety of the floating support installation process,which must be equipped with corresponding monitoring technology.At the same time,it summarizes the main equipment used in the installation process of the floating installation.Secondly,in order to study the monitoring elements in the process of maritime transportation,this article analyzes the stability of the barge according to the basic parameters of the transport barge and obtains the stability vanishing angle.The main parameters of the design transport barge are modeled in PRO-E and based Potential three-dimensional potential theories.In hydrodynamic analysis of floating barges in the frequency domain analysis,the article obtains of the response amplitude operator(RAO)when different waves come in The degree of freedom,which has a great influence on navigation.Therefore,yaw,roll,pitch and heave need to be monitored.During the time-domain analysis,the movement and acceleration of the transport barge under the action of 1m and 2m wave height are studied.And it is obtained that the barge is more sensitive to wave height during transportation,so Wave height is monitored.Finally,study the monitoring elements of the barge during the process of docking.Based on the potential three-dimensional potential theories,this paper analyzes the RAO,additional mass and damping coefficient of the barge under different waves in the frequency domain process.It is obtained that six degrees of freedom need to be monitored during this process.In the time domain process,the dynamic process of docking is divided into seven quasi-static processes.In numerically simulating each process,the mooring force of the mooring line is increasing with the length of the cable during the docking is decreasing...