Mooring Analysis Of Offshore Wind Power Floating Foundation Group

With the continuous development of industrialization,the phenomenon of energy shortage becomes increasingly serious,and the pollution becomes increasingly serious.The energy price keeps climbing.As a renewable and pollution-free clean energy,wind energy has long been used by human beings.In recent years,wind power has entered a period of rapid development,with global installed capacity exceeding 100 million kilowatts.Offshore wind power,in Particular,is highly regarded for its high and stable wind speed.The main wind energy resources of ocean power generation are distributed in the sea area 5~50km away from the coastline,and the water depth of this sea area is generally more than 20 m.Different from onshore wind power,the development of offshore wind power needs to solve the problem of offshore wind power foundation.In order to improve the Marine power generation and the economic efficiency of the offshore wind farm,the floating foundation is needed to install the wind generator.Therefore,it is of great significance to study the dynamic characteristics of offshore wind power floating infrastructure.In order to solve the existing floating base installation difficulty is the problem of high cost,this paper will be of a floating type small power of wind turbine based on floating floating base units and their combination)group of mooring system design and analysis,using AQWA software,first of all,the waters in the management of the fan,in the frequency domain and time domain calculation under normal operation conditions of a single floating wind dynamic response of the system.Then the influence of hydrodynamic interaction on hydrodynamic performance of multi-floating body structure is studied.Then the surface element and Morrison rod element are used to model and calculate the floating foundation group respectively.The results show that the wave frequency response is the main Part of the pitch,heave,pitch motion and even the tension contribution of the mooring cable under the living sea condition,with only a few low frequency Parts.The mooring cable tension calculated by the dynamic coupling method is checked according to the API specification,and it is concluded that the multi-float mooring system meets the requirements of the specification.Finally,the response amplitude of multi-floating structure with different flexible connector stiffness is compared,and it is found that the larger the stiffness is,the closer it is to a whole.The research results of this paper have certain reference significance for the engineering application of small-scale multi-floating body structure.